WO2022105030A1 - Composite coating of nickel aluminide intermetallic compound reinforced by boron nitride nanosheet and preparation method therefor - Google Patents

Composite coating of nickel aluminide intermetallic compound reinforced by boron nitride nanosheet and preparation method therefor Download PDF

Info

Publication number
WO2022105030A1
WO2022105030A1 PCT/CN2020/141146 CN2020141146W WO2022105030A1 WO 2022105030 A1 WO2022105030 A1 WO 2022105030A1 CN 2020141146 W CN2020141146 W CN 2020141146W WO 2022105030 A1 WO2022105030 A1 WO 2022105030A1
Authority
WO
WIPO (PCT)
Prior art keywords
boron nitride
powder
nitride nanosheet
intermetallic compound
composite coating
Prior art date
Application number
PCT/CN2020/141146
Other languages
French (fr)
Chinese (zh)
Inventor
陈瑶
陆小龙
刘卫卫
Original Assignee
苏州大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州大学 filed Critical 苏州大学
Publication of WO2022105030A1 publication Critical patent/WO2022105030A1/en

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/134—Plasma spraying
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material

Definitions

  • the invention belongs to the technical field of coatings, and in particular relates to a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating and a preparation method thereof.
  • Aerospace, petrochemical metallurgy, energy power, marine engineering and other major national high-tech equipment have a large number of key metal friction moving parts that are related to equipment service safety. Under extremely harsh service conditions such as oxidation, corrosion, etc., the service life of parts is reduced due to strong friction and wear, which in turn affects the reliability and life of the entire equipment. Typically, the failure of kinematic components begins at their surface. Therefore, while maintaining the inherent comprehensive characteristics (toughness, strength, etc.) of the component base material, the wear-resistant boron nitride nanosheet reinforced Ni3Al intermetallic compound composite coating and its preparation were prepared on the surface of the moving parts by plasma spraying technology. The method is considered to be an economical and practical and effective method to solve the above problems.
  • Ni3Al intermetallics have many excellent properties, including high melting point, high resistance to high temperature oxidation, corrosion resistance, high high temperature strength and creep resistance, and high specific strength, and have a positive temperature effect on yield strength below peak temperature
  • Ni 3 Al has an abnormal yield strength-temperature relationship in the temperature range of 600-900 °C, that is, with the increase of temperature, the strength also increases. Therefore, Ni 3 Al intermetallic compounds have broad application prospects as high-temperature wear-resistant coatings in civil and military industries.
  • the medium-temperature dynamic brittleness and poor high-temperature creep resistance of Ni 3 Al are the main reasons that hinder its practical application and development in engineering.
  • the important materials that affect the performance of the engine have very strict performance requirements. They should not only have good strength and toughness, but also have excellent high temperature wear resistance.
  • a large number of research results show that although some properties of Ni 3 Al compounds (such as room temperature brittleness, low creep resistance, etc.) can be improved by alloying, the range of performance improvement is very limited.
  • the research direction in the field mainly lies in the development of intermetallic matrix composites (IMCs) reinforced with ceramic fibers/particles (such as TiC, Si 3 N 4 , Al 2 O 3 , TiB 2 , etc.).
  • IMCs intermetallic matrix composites
  • ceramic fibers/particles such as TiC, Si 3 N 4 , Al 2 O 3 , TiB 2 , etc.
  • the orientation is considered to be an effective way to further improve the high-temperature mechanical properties and high-temperature oxidation resistance in Ni 3 Al.
  • the relatively high density of these ceramic fibers/particles reduces the specific strength of the boron nitride nanosheet reinforced Ni 3 Al intermetallic composite coating.
  • Patent CN103498074A uses spark plasma sintering to prepare graphene-reinforced Ni 3 Al composite materials. The results show that the addition of graphene can effectively improve the tribological properties of the coating.
  • graphene oxidizes at temperatures above 350 °C, which
  • the purpose of the present invention is to provide a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating and a preparation method thereof.
  • the composite coating provided by the present invention has better performance.
  • the invention provides a preparation method of boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating, comprising:
  • the powder is spray granulated to obtain a spray feed
  • Plasma spraying is performed on the sprayed feed material to obtain a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating.
  • the preparation method of the mixed powder includes:
  • the nickel powder and the aluminum powder are ball-milled with isopropanol to obtain a slurry
  • the slurry is dried and then ground to obtain a mixed powder
  • the ratio of the balls in the ball milling process is (3-5):1, the rotational speed is 200-400 r/min, and the ball-milling time is 5-7 hours;
  • the drying temperature is 60-80°C.
  • the mass ratio of the nickel powder and the aluminum powder is (80-90): (10-20).
  • the preparation method of the boron nitride nanosheet dispersion comprises:
  • the ultrasonic dispersion time is 3 to 5 hours.
  • the method for mixing the mixed powder and the boron nitride nanosheet dispersion includes:
  • the rotational speed in the stirring and dispersing process is 4500-5500 rpm, and the stirring and dispersing time is 4-6 hours.
  • the temperature for drying after mixing the mixed powder and the boron nitride nanosheet dispersion liquid is 75-85°C.
  • the mass content of the boron nitride nanosheets in the powder is 0.5-1.5%.
  • the current in the plasma spraying process is 750-850A
  • the voltage is 35-45V
  • the main gas argon flow is 30-40 slm
  • the auxiliary gas helium flow is 30-40 slm.
  • the distance between the nozzle and the sprayed substrate is 80-100 mm.
  • the properties of the layered structure coatings prepared by plasma spraying are mainly affected by the morphology, strength, crystal structure of the flat particles, and the bonding strength between the flat particles and between the flat particles and the substrate.
  • the invention provides a method for preparing a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound with both light weight, high strength and toughness and lubricating properties.
  • the obtained powder was sintered by plasma spraying technology to prepare boron nitride nanosheets reinforced Ni 3 Al intermetallic compound composite coating, and a new type of nitrogen with excellent properties such as high temperature resistance, wear resistance, corrosion resistance and low friction coefficient was obtained.
  • Boronide nanosheet reinforced Ni 3 Al intermetallic compound coating was obtained.
  • the present invention provides a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating prepared by the method described in the above technical solution.
  • the invention provides a boron nitride nano-sheet reinforced Ni 3 Al intermetallic compound composite coating material system, which adopts boron nitride nano-sheet (Boron Nitride Nanoplatelet, BNNP) as a reinforcing body, and particularly uses Ni 3 Al as a matrix.
  • boron nitride nano-sheet Boron Nitride Nanoplatelet, BNNP
  • High-temperature boron nitride nanosheets reinforced Ni 3 Al intermetallic compound composite coating using the strong bonding characteristics of the coexistence of metal aluminide metal bonds and covalent bonds, high temperature hardness, special chemical composition and other unique physical and chemical properties and boron nitride Based on the excellent mechanical properties of nanosheets, a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating material system has been developed that combines high temperature resistance, wear resistance, corrosion resistance, low friction coefficient and other excellent properties.
  • Fig. 1 is the SEM images of the plasma sprayed feeds prepared in Examples 1-3 and Comparative Example 1 of the present invention, (a) is Comparative Example 1, (b) is Example 1, (c) is Example 2, (d) is ) is embodiment 3;
  • Fig. 2 is the SEM image of the powder prepared in Example 1 of the present invention.
  • Fig. 3 is the XRD diffraction patterns of the composite coatings prepared in Examples 1-3 of the present invention and Comparative Example 1;
  • Example 4 is a SEM image of the cross-section of the boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating prepared in Example 1 of the present invention
  • Fig. 5 is the hardness performance test result of the composite coatings prepared in Examples 1-3 of the present invention and Comparative Example 1;
  • Fig. 6 is the friction coefficient detection results of the composite coatings prepared in Examples 1-3 of the present invention and Comparative Example 1 (the abscissa in the figure is the sliding wear distance, and the ordinate is the friction coefficient);
  • FIG. 7 is the test results of the wear rate of the composite coatings prepared in Examples 1 to 3 of the present invention and Comparative Example 1 (the ordinate in the figure is the wear rate).
  • the invention provides a preparation method of boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating, comprising:
  • the powder is spray granulated to obtain a spray feed
  • Plasma spraying is performed on the sprayed feed material to obtain a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating.
  • the preparation method of the mixed powder preferably comprises:
  • the nickel powder and the aluminum powder are ball-milled with isopropanol to obtain a slurry
  • the slurry is dried and then ground to obtain a mixed powder.
  • the equipment of the ball milling is preferably a horizontal planetary ball mill, and the ratio of the ball material in the ball milling process is preferably (3-5): 1, more preferably 4: 1, and the ball mill in the ball milling process
  • the rotation speed is preferably 200-400 r/min, more preferably 250-350 r/min, most preferably 300 r/min, and the ball milling time is preferably 5-7 hours, more preferably 6 hours.
  • the drying temperature is preferably 60 to 80°C, more preferably 70°C.
  • the particle size of the nickel powder is preferably ⁇ 1 ⁇ m; the particle size of the aluminum powder is preferably ⁇ 1 ⁇ m; the present invention does not have special restrictions on the sources of the nickel powder and the aluminum powder, and the nickel powder well-known to those skilled in the art is adopted. Powder and aluminum powder can be purchased from the market. In the present invention, the mass ratio of the nickel powder and the aluminum powder is preferably (80-90):(10-20), more preferably 85:15.
  • the preparation method of the boron nitride nanosheet dispersion preferably includes:
  • the boron nitride nanosheets and isopropanol are mixed for ultrasonic dispersion to obtain a boron nitride nanosheet dispersion.
  • the ultrasonic dispersion time is preferably 3 to 5 hours, more preferably 4 hours.
  • the thickness of the boron nitride nanosheets is preferably ⁇ 30 nm, and the diameter is preferably ⁇ 5 ⁇ m; the present invention has no special limitation on the source of the boron nitride nanosheets, and boron nitride well-known to those skilled in the art is used.
  • Nanoplatelets can be purchased from the market; boron nitride nanoplatelets (BN Nanoplatelet, BNNP) have a two-dimensional structure, excellent mechanical properties (elastic modulus 700-900GPa, yield strength-35GPa), good thermal conductivity 300W/mK, low density (2.1g/cm 3 ) and excellent high temperature stability (still maintains a stable structure in the atmospheric environment ⁇ 1000 °C), these excellent properties make BNNP a great potential for self-lubricating composite materials in a wide temperature range
  • the reinforced phase can not only improve the mechanical properties of the composites, but also make the composites have excellent self-lubricating properties in a wide temperature range.
  • the method for mixing the mixed powder and the boron nitride nanosheet dispersion preferably includes:
  • the mixed powder is put into the boron nitride nanosheet dispersion liquid for stirring and dispersion.
  • a homogenizer is preferably used for the stirring and dispersing, the rotational speed in the stirring and dispersing process is preferably 4500-5500 rpm, more preferably 5000 rpm, and the stirring and dispersing time is preferably 4-6 hours, more preferably 5 hours.
  • drying after mixing the mixed powder and boron nitride nanosheet dispersion liquid is preferably performed in a vacuum drying oven, and the drying temperature is preferably 75-85°C, more preferably 80°C; the drying is completed Then, the obtained dry powder is preferably ground to obtain a powder.
  • the mass content of the boron nitride nanosheets in the boron nitride nanosheet dispersion liquid in the powder is preferably 0.5-1.5%, more preferably 0.8-1.2%, and most preferably 1%.
  • the rotational speed of the nozzle in the spray granulation process is preferably 2000-2500 rpm, more preferably 2100-2200 rpm; the inlet temperature of the nozzle is preferably 260-280°C, more preferably 270°C; the outlet temperature of the nozzle is preferably 110°C ⁇ 120°C.
  • the spray granulation preferably comprises:
  • the slurry is spray granulated to obtain a spray feed.
  • the polyethylene glycol solution is preferably an aqueous solution of polyethylene glycol, and the mass concentration of the polyethylene glycol solution is preferably 8-12%;
  • the mass ratio is preferably (43-47):(43-47):(9-11).
  • the current in the plasma spraying process is preferably 750-850A, more preferably 780-820A, and most preferably 800A; the voltage is preferably 35-45V, more preferably 38-42V, and most preferably 40V,
  • the flow rate of the main gas argon is preferably 30-40slm, more preferably 35slm, the flow rate of the auxiliary gas helium is preferably 30-40slm, more preferably 35slm, and the distance between the nozzle and the spray substrate in the plasma spraying process is preferably 80-100mm, more preferably It is 85 to 95 mm, most preferably 90 mm.
  • the properties of the layered structure coatings prepared by plasma spraying are mainly affected by the morphology, strength, crystal structure of the flat particles, and the bonding strength between the flat particles and between the flat particles and the substrate.
  • the invention provides a method for preparing a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating with both light weight, high strength and toughness and lubricating properties. Then, the obtained powder is sintered by plasma spraying technology to prepare boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating, which can obtain a combination of high temperature resistance, wear resistance, corrosion resistance, low friction coefficient and other excellent properties.
  • a novel boron nitride nanosheet reinforced Ni 3 Al intermetallic composite coating is a method for preparing a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating with both light weight, high strength and toughness and lubricating properties.
  • the present invention provides a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating prepared by the method described in the above technical solution.
  • the invention provides a boron nitride nano-sheet reinforced Ni 3 Al intermetallic compound composite coating material system, which adopts boron nitride nano-sheet (Boron Nitride Nanoplatelet, BNNP) as a reinforcing body, and particularly uses Ni 3 Al as a matrix.
  • boron nitride nano-sheet Boron Nitride Nanoplatelet, BNNP
  • High-temperature boron nitride nanosheets reinforced Ni 3 Al intermetallic compound composite coating using the strong bonding characteristics of the coexistence of metal aluminide metal bonds and covalent bonds, high temperature hardness, special chemical composition and other unique physical and chemical properties and boron nitride Due to the excellent mechanical properties and other characteristics of nanosheets, the development of a composite coating material system of boron nitride nanosheets reinforced with Ni 3 Al intermetallic compounds with high specific strength has both excellent high temperature strength and toughness and good high temperature oxidation resistance.
  • the nickel powder used in the following examples of the present invention is provided by Shanghai Yaotian New Material Technology Co., Ltd.
  • the aluminum powder is provided by Shanghai Yaotian New Material Technology Co., Ltd.
  • the boron nitride nanosheets are provided by Nanjing Xianfeng Nano Material Technology Co., Ltd. of.
  • the above mixed slurry is dried in a vacuum drying oven at 70°C, and then ground into powder to obtain mixed powder;
  • the above mixed powder is sprayed and granulated to obtain spherical plasma spray feed
  • the above-mentioned plasma spraying feeding material is plasma sprayed, the current is 800A, the voltage is 40V, the main gas argon flow rate is 35slm, the auxiliary gas helium gas flow rate is 35slm, and the distance between the plasma spray nozzle and the spray substrate is 90mm to obtain a composite coating.
  • the above mixed slurry is dried in a vacuum drying oven at 70°C, and then ground into powder to obtain mixed powder;
  • the boron nitride nanosheets were placed in isopropanol for ultrasonic dispersion for 4 hours to obtain a boron nitride nanosheet dispersion;
  • the mixed powder into the boron nitride nanosheet dispersion liquid, stir and disperse with a homogenizer, the rotation speed is 5000 rpm, and the time is 5 hours, and the obtained mixed liquid is dried in a vacuum drying box at 80° C. powder to obtain powder, and the mass content of boron nitride nanosheets in the powder is 0.5%;
  • Polyethylene glycol is dissolved in water, and the mass fraction of polyethylene glycol in water is 10 wt % to obtain a polyethylene glycol solution; the above-mentioned powder, water and polyethylene glycol solution are in a mass fraction ratio of 45:45: 10 Mixing to obtain a slurry; spraying and granulating the obtained slurry, the nozzle rotation speed is 2100rpm, the nozzle inlet temperature is 270°C, and the outlet temperature is 115°C to obtain spherical plasma spray feed;
  • the above-mentioned plasma spraying feeding material is plasma sprayed, the current is 800A, the voltage is 40V, the main gas argon flow rate is 35slm, the auxiliary gas helium gas flow rate is 35slm, and the distance between the plasma spray nozzle and the spray substrate is 90mm to obtain boron nitride nanosheets reinforced Ni Al intermetallic compound coating.
  • the above mixed slurry is dried in a vacuum drying oven at 70°C, and then ground into powder to obtain mixed powder;
  • the boron nitride nanosheets were placed in isopropanol for ultrasonic dispersion for 4 hours to obtain a boron nitride nanosheet dispersion;
  • the mixed powder into the boron nitride nanosheet dispersion liquid, stir and disperse with a homogenizer, the rotation speed is 5000 rpm, and the time is 5 hours, and the obtained mixed liquid is dried in a vacuum drying box at 80° C. powder to obtain powder, and the mass content of boron nitride nanosheets in the powder is 1%;
  • Polyethylene glycol is dissolved in water, and the mass fraction of polyethylene glycol in water is 10 wt % to obtain a polyethylene glycol solution; the above-mentioned powder, water and polyethylene glycol solution are in a mass fraction ratio of 45:45: 10 Mixing to obtain a slurry; spray granulation of the obtained slurry, the nozzle rotation speed is 2100rpm, the nozzle inlet temperature is 270°C, and the outlet temperature is 115°C to obtain spherical plasma spray feed;
  • the above-mentioned plasma spraying feeding material is plasma sprayed, the current is 800A, the voltage is 40V, the main gas argon flow rate is 35slm, the auxiliary gas helium gas flow rate is 35slm, and the distance between the plasma spray nozzle and the spray substrate is 90mm to obtain boron nitride nanosheets reinforced Ni Al intermetallic compound coating.
  • the above mixed slurry is dried in a vacuum drying oven at 70°C, and then ground into powder to obtain mixed powder;
  • the boron nitride nanosheets were placed in isopropanol for ultrasonic dispersion for 4 hours to obtain a boron nitride nanosheet dispersion;
  • the mixed powder into the boron nitride nanosheet dispersion liquid, stir and disperse with a homogenizer, the rotation speed is 5000 rpm, and the time is 5 hours, and the obtained mixed liquid is dried in a vacuum drying box at 80° C. powder to obtain powder, and the mass content of boron nitride nanosheets in the powder is 1.5%;
  • Polyethylene glycol is dissolved in water, and the mass fraction of polyethylene glycol in water is 10 wt % to obtain a polyethylene glycol solution; the above-mentioned powder, water and polyethylene glycol solution are in a mass fraction ratio of 45:45: 10 Mixing to obtain a slurry; spray granulation of the obtained slurry, the nozzle rotation speed is 2100rpm, the nozzle inlet temperature is 270°C, and the outlet temperature is 115°C to obtain spherical plasma spray feed;
  • the above-mentioned plasma spraying feeding material is plasma sprayed, the current is 800A, the voltage is 40V, the main gas argon flow rate is 35slm, the auxiliary gas helium gas flow rate is 35slm, and the distance between the plasma spray nozzle and the spray substrate is 90mm to obtain boron nitride nanosheets reinforced Ni Al intermetallic compound coating.
  • Example 1 of the present invention The powder prepared in Example 1 of the present invention is subjected to SEM inspection, and the inspection result is shown in Figure 2. It can be seen from Figure 2 that the few-layer boron nitride nanosheets are uniformly dispersed in the powder.
  • the composite coatings prepared in Examples 1 to 3 of the present invention and Comparative Example 1 were tested for hardness, and the coatings were measured by a microhardness tester (XD-1000TMC/LCD, Shanghai Taiming Optical Instrument Co., Ltd.) without adding boron nitride nanosheets. and the hardness of the added boron nitride nanosheets with the content of 0.5wt.%, 1.0wt.% and 1.5wt.% are 325HV 0.2 , 358HV 0.2 , 384HV 0.2 and 417HV 0.2 respectively, as shown in Figure 5, it can be seen that with With the increase of boron nitride nanosheets, the mechanical properties of the coating are enhanced.
  • the composite coatings prepared in Examples 1 to 3 of the present invention and Comparative Example 1 were subjected to friction and wear tests.
  • a friction and wear tester (HT1000, Lanzhou Zhongke Kaihua Technology Development Co., Ltd.)
  • the load was 20N
  • the rotational speed was 300rpm
  • the rotation radius was 2mm
  • the friction coefficient and wear amount of the coating obtained by measuring the grinding ball as an alumina ball with a diameter of 4 mm are shown in Figure 6 and Figure 7. It can be seen that with the increase of boron nitride nanosheets, the wear resistance and friction reduction of the coating are improved. Performance improvements.
  • the properties of the layered structure coatings prepared by plasma spraying are mainly affected by the morphology, strength, crystal structure of the flat particles, and the bonding strength between the flat particles and between the flat particles and the substrate.
  • the invention provides a method for preparing a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating with both light weight, high strength and toughness and lubricating properties. Then, the obtained powder is sintered by plasma spraying technology to prepare boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating, which can obtain a combination of high temperature resistance, wear resistance, corrosion resistance, low friction coefficient and other excellent properties.
  • a novel boron nitride nanosheet reinforced Ni 3 Al intermetallic composite coating is a method for preparing a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating with both light weight, high strength and toughness and lubricating properties.
  • the invention provides a boron nitride nanoplatelet reinforced Ni 3 Al intermetallic compound composite coating material system.
  • High temperature boron nitride nanosheets reinforced Ni3Al intermetallic compound composite coating utilizing the strong bonding characteristics of the coexistence of metal aluminide metal bonds and covalent bonds, high temperature hardness, special chemical composition and other unique physical and chemical properties and boron nitride nanosheets With excellent mechanical properties and other characteristics, a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating material system has been developed that combines high temperature resistance, wear resistance, corrosion resistance, low friction coefficient and other excellent properties.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)

Abstract

A preparation method for a composite coating of a Ni3Al intermetallic compound reinforced by a boron nitride nanosheet, comprising: mixing nickel powder and aluminum powder to obtain a mixed powder; mixing the mixed powder and a boron nitride nanosheet dispersion and then drying same, so as to obtain a powder; carrying out spray granulation on the powder to obtain a spray feed; and carrying out plasma spraying on the spray feed, so as to obtain a composite coating of an Ni3Al intermetallic compound reinforced by a boron nitride nanosheet. Provided is a preparation method for a composite coating of an intermetallic compound having light weight, high strength and toughness and lubricating properties, and a composite coating of an Ni3Al intermetallic compound reinforced by a boron nitride nanosheet having various excellent properties such as high temperature resistance, wear resistance, corrosion resistance and low friction coefficient is obtained. Also provided is a composite coating of an Ni3Al intermetallic compound reinforced by a boron nitride nanosheet.

Description

一种氮化硼纳米片增强镍三铝金属间化合物复合涂层及其制备方法A kind of boron nitride nanosheet reinforced nickel-aluminum intermetallic compound composite coating and preparation method thereof
本申请要求于2020年11月20日提交中国专利局、申请号为202011313515.9、发明名称为“一种氮化硼纳米片增强镍三铝金属间化合物复合涂层及其制备方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application is required to be submitted to the China Patent Office on November 20, 2020, the application number is 202011313515.9, and the invention name is "a boron nitride nanosheet reinforced nickel-aluminum intermetallic compound composite coating and its preparation method" Chinese patent application , the entire contents of which are incorporated herein by reference.
技术领域technical field
本发明属于涂层技术领域，尤其涉及一种氮化硼纳米片增强Ni 3Al金属间化合物复合涂层及其制备方法。 The invention belongs to the technical field of coatings, and in particular relates to a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating and a preparation method thereof.
背景技术Background technique
航空航天、石化冶金、能源动力、海洋工程等国家重大高新技术装备中存在有大量事关装备服役安全的关键金属摩擦运动副零部件，其在高/低温(宽温域)、高速、重载、氧化、腐蚀等极端恶劣服役条件下承受强烈摩擦磨损而导致零部件的使役寿命降低，进而影响整个装备的可靠性和寿命。通常情况下，运动副零部件的失效始于它们的表面。因此，在保持零部件基体材料固有的综合特性(韧性、强度等)的同时，采用等离子喷涂技术在运动副零部件表面制备耐磨氮化硼纳米片增强Ni3Al金属间化合物复合涂层及其制备方法，被认为是解决上述问题即经济又切实可行的有效方法。Aerospace, petrochemical metallurgy, energy power, marine engineering and other major national high-tech equipment have a large number of key metal friction moving parts that are related to equipment service safety. Under extremely harsh service conditions such as oxidation, corrosion, etc., the service life of parts is reduced due to strong friction and wear, which in turn affects the reliability and life of the entire equipment. Typically, the failure of kinematic components begins at their surface. Therefore, while maintaining the inherent comprehensive characteristics (toughness, strength, etc.) of the component base material, the wear-resistant boron nitride nanosheet reinforced Ni3Al intermetallic compound composite coating and its preparation were prepared on the surface of the moving parts by plasma spraying technology. The method is considered to be an economical and practical and effective method to solve the above problems.
Ni 3Al金属间化合物具有许多优良的性能，包括高熔点、高抗高温氧化、耐腐蚀、较高的高温强度和蠕变抗力以及高的比强度，而且具有峰值温度以下屈服强度的正温度效应，如Ni 3Al在600～900℃温度范围具有反常的屈服强度-温度关系，即随着温度的升高，强度也升高。因此，Ni 3Al金属间化合物作为高温耐磨涂层在民用和军事工业中应用前景广阔。然而，Ni 3Al中温动态脆性和较差的高温蠕变抗力，是阻碍其工程实际应用和发展的主要原因。如影响发动机性能的重要材料-航空发动机涡轮叶片和涡轮盘的材料，对性能要求十分苛刻，既应具有良好的强韧性配合，又应具有优异的高温耐磨性能。而单一的Ni 3Al作为涂层材料往往很难满足恶劣条件对航空发动机零部件表面涂层性能 的要求。大量研究结果表明，尽管Ni 3Al化合物的一些性能(如室温脆性、蠕变抗力小等)可以通过合金化的方法得以改善，但性能提升的幅度非常有限。 Ni3Al intermetallics have many excellent properties, including high melting point, high resistance to high temperature oxidation, corrosion resistance, high high temperature strength and creep resistance, and high specific strength, and have a positive temperature effect on yield strength below peak temperature For example, Ni 3 Al has an abnormal yield strength-temperature relationship in the temperature range of 600-900 °C, that is, with the increase of temperature, the strength also increases. Therefore, Ni 3 Al intermetallic compounds have broad application prospects as high-temperature wear-resistant coatings in civil and military industries. However, the medium-temperature dynamic brittleness and poor high-temperature creep resistance of Ni 3 Al are the main reasons that hinder its practical application and development in engineering. For example, the important materials that affect the performance of the engine, the materials of the aero-engine turbine blades and turbine disks, have very strict performance requirements. They should not only have good strength and toughness, but also have excellent high temperature wear resistance. However, it is often difficult for a single Ni 3 Al to be used as a coating material to meet the requirements of the surface coating performance of aero-engine parts under harsh conditions. A large number of research results show that although some properties of Ni 3 Al compounds (such as room temperature brittleness, low creep resistance, etc.) can be improved by alloying, the range of performance improvement is very limited.
目前，领域内研究方向主要在于发展以陶瓷纤维/颗粒(如TiC、Si 3N 4、Al 2O 3、TiB 2等)增强的金属间化合物基复合材料(Intermetallic matrix composites，IMCs)，而且该方向被认为是进一步改善Ni 3Al中高温力学性能和高温抗氧化性能的有效途径。但是，这些陶瓷纤维/颗粒的密度比较大，因而降低了氮化硼纳米片增强Ni 3Al金属间化合物复合涂层的比强度。专利CN103498074A采用放电等离子烧结制备了石墨烯增强Ni 3Al复合材料，结果表明石墨烯的添加有效的提升了涂层的摩擦学性能。但是，石墨烯在温度350℃以上发生氧化，进而降低了该材料高温下的摩擦学性能。 At present, the research direction in the field mainly lies in the development of intermetallic matrix composites (IMCs) reinforced with ceramic fibers/particles (such as TiC, Si 3 N 4 , Al 2 O 3 , TiB 2 , etc.). The orientation is considered to be an effective way to further improve the high-temperature mechanical properties and high-temperature oxidation resistance in Ni 3 Al. However, the relatively high density of these ceramic fibers/particles reduces the specific strength of the boron nitride nanosheet reinforced Ni 3 Al intermetallic composite coating. Patent CN103498074A uses spark plasma sintering to prepare graphene-reinforced Ni 3 Al composite materials. The results show that the addition of graphene can effectively improve the tribological properties of the coating. However, graphene oxidizes at temperatures above 350 °C, which in turn reduces the tribological properties of the material at high temperatures.
发明内容SUMMARY OF THE INVENTION
有鉴于此，本发明的目的在于提供一种氮化硼纳米片增强Ni 3Al金属间化合物复合涂层及其制备方法，本发明提供的复合涂层具有较好的性能。 In view of this, the purpose of the present invention is to provide a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating and a preparation method thereof. The composite coating provided by the present invention has better performance.
本发明提供了一种氮化硼纳米片增强Ni 3Al金属间化合物复合涂层的制备方法，包括： The invention provides a preparation method of boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating, comprising:
将镍粉和铝粉混合，得到混合粉末；Mixing nickel powder and aluminum powder to obtain mixed powder;
将所述混合粉末和氮化硼纳米片分散液混合后干燥，得到粉体；Mixing the mixed powder and the boron nitride nanosheet dispersion liquid and drying to obtain a powder;
将所述粉体进行喷雾造粒，得到喷涂喂料；The powder is spray granulated to obtain a spray feed;
将所述喷涂喂料进行等离子喷涂，得到氮化硼纳米片增强Ni 3Al金属间化合物复合涂层。 Plasma spraying is performed on the sprayed feed material to obtain a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating.
优选的，所述混合粉末的制备方法包括：Preferably, the preparation method of the mixed powder includes:
将镍粉和铝粉用异丙醇进行球磨，得到浆料；The nickel powder and the aluminum powder are ball-milled with isopropanol to obtain a slurry;
将所述浆料进行干燥后研磨，得到混合粉末；The slurry is dried and then ground to obtain a mixed powder;
所述球磨过程中的球料比例为(3～5):1，转速为200～400r/min，球磨时间为5～7小时；The ratio of the balls in the ball milling process is (3-5):1, the rotational speed is 200-400 r/min, and the ball-milling time is 5-7 hours;
所述干燥的温度为60～80℃。The drying temperature is 60-80°C.
优选的，所述镍粉和铝粉的质量比为(80～90)：(10～20)。Preferably, the mass ratio of the nickel powder and the aluminum powder is (80-90): (10-20).
优选的，所述氮化硼纳米片分散液的制备方法包括：Preferably, the preparation method of the boron nitride nanosheet dispersion comprises:
将氮化硼纳米片和异丙醇混合进行超声分散，得到氮化硼纳米片分散液；Mixing the boron nitride nanosheets and isopropanol for ultrasonic dispersion to obtain a boron nitride nanosheet dispersion;
所述超声分散的时间为3～5小时。The ultrasonic dispersion time is 3 to 5 hours.
优选的，所述混合粉末和氮化硼纳米片分散液混合的方法包括：Preferably, the method for mixing the mixed powder and the boron nitride nanosheet dispersion includes:
将混合粉末放入氮化硼纳米片分散液中进行搅拌分散；Put the mixed powder into the boron nitride nanosheet dispersion liquid for stirring and dispersing;
所述搅拌分散过程中的转速为4500～5500rpm，所述搅拌分散的时间为4～6小时。The rotational speed in the stirring and dispersing process is 4500-5500 rpm, and the stirring and dispersing time is 4-6 hours.
优选的，所述混合粉末和氮化硼纳米片分散液混合后干燥的温度为75～85℃。Preferably, the temperature for drying after mixing the mixed powder and the boron nitride nanosheet dispersion liquid is 75-85°C.
优选的，所述氮化硼纳米片在粉体中的质量含量为0.5～1.5％。Preferably, the mass content of the boron nitride nanosheets in the powder is 0.5-1.5%.
优选的，所述等离子喷涂过程中的电流为750～850A，电压为35～45V，主气氩气流量为30～40slm，辅气氦气流量为30～40slm。Preferably, the current in the plasma spraying process is 750-850A, the voltage is 35-45V, the main gas argon flow is 30-40 slm, and the auxiliary gas helium flow is 30-40 slm.
优选的，所述等离子喷涂过程中喷嘴距离喷涂基体的距离为80～100mm。Preferably, in the plasma spraying process, the distance between the nozzle and the sprayed substrate is 80-100 mm.
等离子喷涂制备的层状结构涂层性能主要受到扁平粒子形貌、强度、晶体结构和扁平粒子间及扁平粒子与基体结合强度的影响。本发明提供了一种兼具轻质、高强韧性和润滑性能的氮化硼纳米片增强Ni 3Al金属间化合物的制备方法，即采用均质机分散结合喷雾造粒技术制备喷涂喂料，然后将得到的粉末利用等离子喷涂技术烧结制备氮化硼纳米片增强Ni 3Al金属间化合物复合涂层，获得兼备耐高温、耐磨损、耐腐蚀、低摩擦系数等多种优异性能配合的新型氮化硼纳米片增强Ni 3Al金属间化合物复合涂层。 The properties of the layered structure coatings prepared by plasma spraying are mainly affected by the morphology, strength, crystal structure of the flat particles, and the bonding strength between the flat particles and between the flat particles and the substrate. The invention provides a method for preparing a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound with both light weight, high strength and toughness and lubricating properties. The obtained powder was sintered by plasma spraying technology to prepare boron nitride nanosheets reinforced Ni 3 Al intermetallic compound composite coating, and a new type of nitrogen with excellent properties such as high temperature resistance, wear resistance, corrosion resistance and low friction coefficient was obtained. Boronide nanosheet reinforced Ni 3 Al intermetallic compound coating.
本发明提供了一种上述技术方案所述的方法制备得到的氮化硼纳米片增强Ni 3Al金属间化合物复合涂层。 The present invention provides a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating prepared by the method described in the above technical solution.
本发明提供了一种氮化硼纳米片增强Ni 3Al金属间化合物复合涂层材料体系，采用氮化硼纳米片(Boron Nitride Nanoplatelet,BNNP)作为增强体，特别的以Ni 3Al作为基体的高温氮化硼纳米片增强Ni 3Al金属间化合物复合涂层，利用金属铝化物金属键与共价键共存的强键结合特性、高温硬度高、化学成分特殊等独特的物理化学性质和氮化硼纳米片优异的力学性能等特性，发展兼备耐高温、耐磨损、耐腐蚀、低摩擦系数等多种优异性能配合的氮化硼纳米片增强Ni 3Al金属间化合物复合涂层材料体系。 The invention provides a boron nitride nano-sheet reinforced Ni 3 Al intermetallic compound composite coating material system, which adopts boron nitride nano-sheet (Boron Nitride Nanoplatelet, BNNP) as a reinforcing body, and particularly uses Ni 3 Al as a matrix. High-temperature boron nitride nanosheets reinforced Ni 3 Al intermetallic compound composite coating, using the strong bonding characteristics of the coexistence of metal aluminide metal bonds and covalent bonds, high temperature hardness, special chemical composition and other unique physical and chemical properties and boron nitride Based on the excellent mechanical properties of nanosheets, a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating material system has been developed that combines high temperature resistance, wear resistance, corrosion resistance, low friction coefficient and other excellent properties.
附图说明Description of drawings
图1为本发明实施例1～3和比较例1制备的等离子喷涂喂料的SEM图，(a)为比较例1，(b)为实施例1，(c)为实施例2，(d)为实施例3；Fig. 1 is the SEM images of the plasma sprayed feeds prepared in Examples 1-3 and Comparative Example 1 of the present invention, (a) is Comparative Example 1, (b) is Example 1, (c) is Example 2, (d) is ) is embodiment 3;
图2为本发明实施例1制备的粉体的SEM图；Fig. 2 is the SEM image of the powder prepared in Example 1 of the present invention;
图3为本发明实施例1～3和比较例1制备的复合涂层的XRD衍射图谱；Fig. 3 is the XRD diffraction patterns of the composite coatings prepared in Examples 1-3 of the present invention and Comparative Example 1;
图4为本发明实施例1制备的氮化硼纳米片增强Ni 3Al金属间化合物复合涂层断面的SEM图； 4 is a SEM image of the cross-section of the boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating prepared in Example 1 of the present invention;
图5为本发明实施例1～3和比较例1制备的复合涂层的硬度性能检测结果；Fig. 5 is the hardness performance test result of the composite coatings prepared in Examples 1-3 of the present invention and Comparative Example 1;
图6为本发明实施例1～3和比较例1制备的复合涂层的摩擦系数检测结果(图中横坐标为滑动磨损距离，纵坐标为摩擦系数)；Fig. 6 is the friction coefficient detection results of the composite coatings prepared in Examples 1-3 of the present invention and Comparative Example 1 (the abscissa in the figure is the sliding wear distance, and the ordinate is the friction coefficient);
图7为本发明实施例1～3和比较例1制备的复合涂层的磨损率检测结果(图中纵坐标为磨损率)。FIG. 7 is the test results of the wear rate of the composite coatings prepared in Examples 1 to 3 of the present invention and Comparative Example 1 (the ordinate in the figure is the wear rate).
具体实施方式Detailed ways
下面将对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员经改进或润饰的所有其它实例，都属于本发明保护的范围。应理解，本发明实施例仅用于说明本发明的技术效果，而非用于限制本发明的保护范围。实施例中，所用方法如无特别说明，均为常规方法。The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other examples that are improved or modified by those of ordinary skill in the art fall within the protection scope of the present invention. It should be understood that the embodiments of the present invention are only used to illustrate the technical effects of the present invention, but are not used to limit the protection scope of the present invention. In the examples, the methods used are conventional methods unless otherwise specified.
本发明提供了一种氮化硼纳米片增强Ni 3Al金属间化合物复合涂层的制备方法，包括： The invention provides a preparation method of boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating, comprising:
将镍粉和铝粉混合，得到混合粉末；Mixing nickel powder and aluminum powder to obtain mixed powder;
将所述混合粉末和氮化硼纳米片分散液混合后干燥，得到粉体；Mixing the mixed powder and the boron nitride nanosheet dispersion liquid and drying to obtain a powder;
将所述粉体进行喷雾造粒，得到喷涂喂料；The powder is spray granulated to obtain a spray feed;
将所述喷涂喂料进行等离子喷涂，得到氮化硼纳米片增强Ni 3Al金属间化合物复合涂层。 Plasma spraying is performed on the sprayed feed material to obtain a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating.
在本发明中，所述混合粉末的制备方法优选包括：In the present invention, the preparation method of the mixed powder preferably comprises:
将镍粉和铝粉用异丙醇进行球磨，得到浆料；The nickel powder and the aluminum powder are ball-milled with isopropanol to obtain a slurry;
将所述浆料进行干燥后研磨，得到混合粉末。The slurry is dried and then ground to obtain a mixed powder.
在本发明中，所述球磨的设备优选为卧式行星球磨机，所述球磨过程中的球料比例优选为(3～5):1，更优选为4:1，所述球磨过程中球磨机的转速优选为200～400r/min，更优选为250～350r/min，最优选为300r/min，所述球磨的时间优选为5～7小时，更优选为6小时。In the present invention, the equipment of the ball milling is preferably a horizontal planetary ball mill, and the ratio of the ball material in the ball milling process is preferably (3-5): 1, more preferably 4: 1, and the ball mill in the ball milling process The rotation speed is preferably 200-400 r/min, more preferably 250-350 r/min, most preferably 300 r/min, and the ball milling time is preferably 5-7 hours, more preferably 6 hours.
在本发明中，所述干燥的温度优选为60～80℃，更优选为70℃。In the present invention, the drying temperature is preferably 60 to 80°C, more preferably 70°C.
在本发明中，所述镍粉的粒度优选＜1μm；所述铝粉的粒度优选＜1μm；本发明对所述镍粉和铝粉的来源没有特殊的限制，采用本领域技术人员熟知的镍粉和铝粉即可，可由市场购买获得。在本发明中，所述镍粉和铝粉的质量比优选为(80～90)：(10～20)，更优选为85:15。In the present invention, the particle size of the nickel powder is preferably <1 μm; the particle size of the aluminum powder is preferably <1 μm; the present invention does not have special restrictions on the sources of the nickel powder and the aluminum powder, and the nickel powder well-known to those skilled in the art is adopted. Powder and aluminum powder can be purchased from the market. In the present invention, the mass ratio of the nickel powder and the aluminum powder is preferably (80-90):(10-20), more preferably 85:15.
在本发明中，所述氮化硼纳米片分散液的制备方法优选包括：In the present invention, the preparation method of the boron nitride nanosheet dispersion preferably includes:
将氮化硼纳米片和异丙醇混合进行超声分散，得到氮化硼纳米片分散液。The boron nitride nanosheets and isopropanol are mixed for ultrasonic dispersion to obtain a boron nitride nanosheet dispersion.
在本发明中，所述超声分散的时间优选为3～5小时，更优选为4小时。In the present invention, the ultrasonic dispersion time is preferably 3 to 5 hours, more preferably 4 hours.
在本发明中，所述氮化硼纳米片的厚度优选≤30nm，直径优选≤5μm；本发明对所述氮化硼纳米片的来源没有特殊的限制，采用本领域技术人员熟知的氮化硼纳米片即可，可由市场购买获得；氮化硼纳米片(BN Nanoplatelet,BNNP)具有二维结构，具有优异的力学性能(弹性模量700～900GPa、屈服强度～35GPa)、良好的热导性能300W/mK、低的密度(2.1g/cm 3)和优异的高温稳定性能(大气环境下～1000℃仍保持稳定结构)，这些优异性能使BNNP成为宽温域自润滑复合材料中极具潜力的增强相，不仅能够提高复合材料的力学性能，同时能使得复合材料具有优异的宽温域自润滑性能。 In the present invention, the thickness of the boron nitride nanosheets is preferably ≤30 nm, and the diameter is preferably ≤5 μm; the present invention has no special limitation on the source of the boron nitride nanosheets, and boron nitride well-known to those skilled in the art is used. Nanoplatelets can be purchased from the market; boron nitride nanoplatelets (BN Nanoplatelet, BNNP) have a two-dimensional structure, excellent mechanical properties (elastic modulus 700-900GPa, yield strength-35GPa), good thermal conductivity 300W/mK, low density (2.1g/cm 3 ) and excellent high temperature stability (still maintains a stable structure in the atmospheric environment ~ 1000 ℃), these excellent properties make BNNP a great potential for self-lubricating composite materials in a wide temperature range The reinforced phase can not only improve the mechanical properties of the composites, but also make the composites have excellent self-lubricating properties in a wide temperature range.
在本发明中，所述混合粉末和氮化硼纳米片分散液混合的方法优选包括：In the present invention, the method for mixing the mixed powder and the boron nitride nanosheet dispersion preferably includes:
将混合粉末放入氮化硼纳米片分散液中进行搅拌分散。The mixed powder is put into the boron nitride nanosheet dispersion liquid for stirring and dispersion.
在本发明中，所述搅拌分散优选采用均质机，所述搅拌分散过程中的转速优选为4500～5500rpm，更优选为5000rpm，所述搅拌分散的时间优选为4～6小时，更优选为5小时。In the present invention, a homogenizer is preferably used for the stirring and dispersing, the rotational speed in the stirring and dispersing process is preferably 4500-5500 rpm, more preferably 5000 rpm, and the stirring and dispersing time is preferably 4-6 hours, more preferably 5 hours.
在本发明中，所述混合粉末和氮化硼纳米片分散液混合后干燥优选在真空干燥箱中进行，所述干燥的温度优选为75～85℃，更优选为80℃；所述干燥完成后优选将得到的干燥粉末研磨，得到粉体。In the present invention, drying after mixing the mixed powder and boron nitride nanosheet dispersion liquid is preferably performed in a vacuum drying oven, and the drying temperature is preferably 75-85°C, more preferably 80°C; the drying is completed Then, the obtained dry powder is preferably ground to obtain a powder.
在本发明中，所述氮化硼纳米片分散液中的氮化硼纳米片在粉体中的质量含量优选为0.5～1.5％，更优选为0.8～1.2％，最优选为1％。In the present invention, the mass content of the boron nitride nanosheets in the boron nitride nanosheet dispersion liquid in the powder is preferably 0.5-1.5%, more preferably 0.8-1.2%, and most preferably 1%.
在本发明中，所述喷雾造粒过程中的喷嘴转速优选为2000～2500rpm，更优选为2100～2200rpm；喷嘴进口温度优选为260～280℃，更优选为270℃；喷嘴出口温度优选为110～120℃。在本发明中，所述喷雾造粒优选包括：In the present invention, the rotational speed of the nozzle in the spray granulation process is preferably 2000-2500 rpm, more preferably 2100-2200 rpm; the inlet temperature of the nozzle is preferably 260-280°C, more preferably 270°C; the outlet temperature of the nozzle is preferably 110°C ~120°C. In the present invention, the spray granulation preferably comprises:
将所述粉体、聚乙二醇溶液和水混合，得到浆料；Mixing the powder, polyethylene glycol solution and water to obtain slurry;
将所述浆料进行喷雾造粒，得到喷涂喂料。The slurry is spray granulated to obtain a spray feed.
在本发明中，所述聚乙二醇溶液优选为聚乙二醇水溶液，所述聚乙二醇溶液的质量浓度优选为8～12％；所述粉体、水和聚乙二醇溶液的质量比优选为(43～47):(43～47):(9～11)。In the present invention, the polyethylene glycol solution is preferably an aqueous solution of polyethylene glycol, and the mass concentration of the polyethylene glycol solution is preferably 8-12%; The mass ratio is preferably (43-47):(43-47):(9-11).
在本发明中，所述等离子喷涂过程中的电流优选为750～850A，更优选为780～820A，最优选为800A；电压优选为35～45V，更优选为38～42V，最优选为40V，主气氩气流量优选为30～40slm，更优选为35slm，辅气氦气流量优选为30～40slm，更优选为35slm，等离子喷涂过程中喷嘴距离喷涂基体的距离优选为80～100mm，更优选为85～95mm，最优选为90mm。In the present invention, the current in the plasma spraying process is preferably 750-850A, more preferably 780-820A, and most preferably 800A; the voltage is preferably 35-45V, more preferably 38-42V, and most preferably 40V, The flow rate of the main gas argon is preferably 30-40slm, more preferably 35slm, the flow rate of the auxiliary gas helium is preferably 30-40slm, more preferably 35slm, and the distance between the nozzle and the spray substrate in the plasma spraying process is preferably 80-100mm, more preferably It is 85 to 95 mm, most preferably 90 mm.
等离子喷涂制备的层状结构涂层性能主要受到扁平粒子形貌、强度、晶体结构和扁平粒子间及扁平粒子与基体结合强度的影响。本发明提供了一种兼具轻质、高强韧性和润滑性能的氮化硼纳米片增强Ni 3Al金属间化合物复合涂层的制备方法，即采用均质机分散结合喷雾造粒技术制备喷涂喂料，然后将得到的粉末利用等离子喷涂技术烧结制备氮化硼纳米片增强Ni 3Al金属间化合物复合涂层，获得兼备耐高温、耐磨损、耐腐蚀、低摩擦系数等多种优异性能配合的新型氮化硼纳米片增强Ni 3Al金属间化合物复合涂层。 The properties of the layered structure coatings prepared by plasma spraying are mainly affected by the morphology, strength, crystal structure of the flat particles, and the bonding strength between the flat particles and between the flat particles and the substrate. The invention provides a method for preparing a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating with both light weight, high strength and toughness and lubricating properties. Then, the obtained powder is sintered by plasma spraying technology to prepare boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating, which can obtain a combination of high temperature resistance, wear resistance, corrosion resistance, low friction coefficient and other excellent properties. A novel boron nitride nanosheet reinforced Ni 3 Al intermetallic composite coating.
本发明提供了一种上述技术方案所述的方法制备得到的氮化硼纳米片增强Ni 3Al金属间化合物复合涂层。 The present invention provides a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating prepared by the method described in the above technical solution.
本发明提供了一种氮化硼纳米片增强Ni 3Al金属间化合物复合涂层材料体系，采用氮化硼纳米片(Boron Nitride Nanoplatelet,BNNP)作为增强体，特别的以Ni 3Al作为基体的高温氮化硼纳米片增强Ni 3Al金属间化合物复合涂层，利用金属铝化物金属键与共价键共存的强键结合特性、高温硬度高、化学成分特殊等独特的物理化学性质和氮化硼纳米片优异的力学性能等特性，发展兼备 优异高温强韧配合和良好高温抗氧化性能，特别是具有较高比强度的氮化硼纳米片增强Ni 3Al金属间化合物复合涂层材料体系。 The invention provides a boron nitride nano-sheet reinforced Ni 3 Al intermetallic compound composite coating material system, which adopts boron nitride nano-sheet (Boron Nitride Nanoplatelet, BNNP) as a reinforcing body, and particularly uses Ni 3 Al as a matrix. High-temperature boron nitride nanosheets reinforced Ni 3 Al intermetallic compound composite coating, using the strong bonding characteristics of the coexistence of metal aluminide metal bonds and covalent bonds, high temperature hardness, special chemical composition and other unique physical and chemical properties and boron nitride Due to the excellent mechanical properties and other characteristics of nanosheets, the development of a composite coating material system of boron nitride nanosheets reinforced with Ni 3 Al intermetallic compounds with high specific strength has both excellent high temperature strength and toughness and good high temperature oxidation resistance.
本发明以下实施例所用的镍粉为上海杳田新材料科技有限公司提供的，铝粉为上海杳田新材料科技有限公司提供的，氮化硼纳米片为南京先丰纳米材料科技有限公司提供的。The nickel powder used in the following examples of the present invention is provided by Shanghai Yaotian New Material Technology Co., Ltd., the aluminum powder is provided by Shanghai Yaotian New Material Technology Co., Ltd., and the boron nitride nanosheets are provided by Nanjing Xianfeng Nano Material Technology Co., Ltd. of.
比较例1Comparative Example 1
用电子天平分别称取85wt.％镍粉(～1μm)和15wt.％铝粉(～1μm)；Weigh 85wt.% nickel powder (~1μm) and 15wt.% aluminum powder (~1μm) with an electronic balance;
将镍粉和铝粉放入卧式行星球磨机中加入异丙醇进行球磨，球磨过程中球料比例为4:1，球磨机的转速为300r/min，球磨6小时，得到混合浆料；Put nickel powder and aluminum powder into a horizontal planetary ball mill, add isopropanol for ball milling, the ratio of ball to material is 4:1 in the ball milling process, the rotational speed of the ball mill is 300 r/min, and the ball is milled for 6 hours to obtain a mixed slurry;
将上述混合浆料放在真空干燥箱中70℃干燥，然后研磨成粉末，得到混合粉末；The above mixed slurry is dried in a vacuum drying oven at 70°C, and then ground into powder to obtain mixed powder;
将上述混合粉末进行喷雾造粒，得到球形等离子喷涂喂料；The above mixed powder is sprayed and granulated to obtain spherical plasma spray feed;
将上述等离子喷涂喂料进行等离子喷涂，电流为800A，电压为40V，主气氩气流量35slm，辅气氦气流量35slm，等离子喷涂喷嘴距离喷涂基体距离90mm，得到复合涂层。The above-mentioned plasma spraying feeding material is plasma sprayed, the current is 800A, the voltage is 40V, the main gas argon flow rate is 35slm, the auxiliary gas helium gas flow rate is 35slm, and the distance between the plasma spray nozzle and the spray substrate is 90mm to obtain a composite coating.
实施例1Example 1
用电子天平分别称取85wt.％镍粉(～1μm)和15wt.％铝粉(～1μm)；Weigh 85wt.% nickel powder (~1μm) and 15wt.% aluminum powder (~1μm) with an electronic balance;
将镍粉和铝粉放入卧式行星球磨机中加入异丙醇进行球磨，球磨过程中球料比例为4:1，球磨机的转速为300r/min，球磨6小时，得到混合浆料；Put nickel powder and aluminum powder into a horizontal planetary ball mill, add isopropanol for ball milling, the ratio of ball to material is 4:1 in the ball milling process, the rotational speed of the ball mill is 300 r/min, and the ball is milled for 6 hours to obtain a mixed slurry;
将上述混合浆料放在真空干燥箱中70℃干燥，然后研磨成粉末，得到混合粉末；The above mixed slurry is dried in a vacuum drying oven at 70°C, and then ground into powder to obtain mixed powder;
将氮化硼纳米片放在异丙醇中进行超声分散4小时，得到氮化硼纳米片分散液；The boron nitride nanosheets were placed in isopropanol for ultrasonic dispersion for 4 hours to obtain a boron nitride nanosheet dispersion;
将所述混合粉末放入氮化硼纳米片分散液中，用均质机进行搅拌分散，转速为5000rpm，时间为5小时，将得到的混合液在真空干燥箱中80℃干燥，然后研磨成粉末，得到粉体，氮化硼纳米片在粉体中的质量含量为0.5％；Put the mixed powder into the boron nitride nanosheet dispersion liquid, stir and disperse with a homogenizer, the rotation speed is 5000 rpm, and the time is 5 hours, and the obtained mixed liquid is dried in a vacuum drying box at 80° C. powder to obtain powder, and the mass content of boron nitride nanosheets in the powder is 0.5%;
将聚乙二醇溶解在水中，聚乙二醇在水中的质量分数为10wt％，得到聚乙二醇溶液；将上述粉体、水和聚乙二醇溶液按照质量分数比为45:45:10混合， 得到浆料；将得到的浆料进行喷雾造粒，喷嘴转速2100rpm，喷嘴进口温度270℃，出口温度115℃，得到球形等离子喷涂喂料；Polyethylene glycol is dissolved in water, and the mass fraction of polyethylene glycol in water is 10 wt % to obtain a polyethylene glycol solution; the above-mentioned powder, water and polyethylene glycol solution are in a mass fraction ratio of 45:45: 10 Mixing to obtain a slurry; spraying and granulating the obtained slurry, the nozzle rotation speed is 2100rpm, the nozzle inlet temperature is 270°C, and the outlet temperature is 115°C to obtain spherical plasma spray feed;
将上述等离子喷涂喂料进行等离子喷涂，电流为800A，电压为40V，主气氩气流量35slm，辅气氦气流量35slm，等离子喷涂喷嘴距离喷涂基体距离90mm，得到氮化硼纳米片增强Ni 3Al金属间化合物复合涂层。 The above-mentioned plasma spraying feeding material is plasma sprayed, the current is 800A, the voltage is 40V, the main gas argon flow rate is 35slm, the auxiliary gas helium gas flow rate is 35slm, and the distance between the plasma spray nozzle and the spray substrate is 90mm to obtain boron nitride nanosheets reinforced Ni Al intermetallic compound coating.
实施例2Example 2
用电子天平分别称取85wt.％镍粉(～1μm)和15wt.％铝粉(～1μm)；Weigh 85wt.% nickel powder (~1μm) and 15wt.% aluminum powder (~1μm) with an electronic balance;
将镍粉和铝粉放入卧式行星球磨机中加入异丙醇进行球磨，球磨过程中球料比例为4:1，球磨机的转速为300r/min，球磨6小时，得到混合浆料；Put nickel powder and aluminum powder into a horizontal planetary ball mill, add isopropanol for ball milling, the ratio of ball to material is 4:1 in the ball milling process, the rotational speed of the ball mill is 300 r/min, and the ball is milled for 6 hours to obtain a mixed slurry;
将上述混合浆料放在真空干燥箱中70℃干燥，然后研磨成粉末，得到混合粉末；The above mixed slurry is dried in a vacuum drying oven at 70°C, and then ground into powder to obtain mixed powder;
将氮化硼纳米片放在异丙醇中进行超声分散4小时，得到氮化硼纳米片分散液；The boron nitride nanosheets were placed in isopropanol for ultrasonic dispersion for 4 hours to obtain a boron nitride nanosheet dispersion;
将所述混合粉末放入氮化硼纳米片分散液中，用均质机进行搅拌分散，转速为5000rpm，时间为5小时，将得到的混合液在真空干燥箱中80℃干燥，然后研磨成粉末，得到粉体，氮化硼纳米片在粉体中的质量含量为1％；Put the mixed powder into the boron nitride nanosheet dispersion liquid, stir and disperse with a homogenizer, the rotation speed is 5000 rpm, and the time is 5 hours, and the obtained mixed liquid is dried in a vacuum drying box at 80° C. powder to obtain powder, and the mass content of boron nitride nanosheets in the powder is 1%;
将聚乙二醇溶解在水中，聚乙二醇在水中的质量分数为10wt％，得到聚乙二醇溶液；将上述粉体、水和聚乙二醇溶液按照质量分数比为45:45:10混合，得到浆料；将得到的浆料进行喷雾造粒，喷嘴转速2100rpm，喷嘴进口温度270℃，出口温度115℃，得到球形等离子喷涂喂料；Polyethylene glycol is dissolved in water, and the mass fraction of polyethylene glycol in water is 10 wt % to obtain a polyethylene glycol solution; the above-mentioned powder, water and polyethylene glycol solution are in a mass fraction ratio of 45:45: 10 Mixing to obtain a slurry; spray granulation of the obtained slurry, the nozzle rotation speed is 2100rpm, the nozzle inlet temperature is 270°C, and the outlet temperature is 115°C to obtain spherical plasma spray feed;
将上述等离子喷涂喂料进行等离子喷涂，电流为800A，电压为40V，主气氩气流量35slm，辅气氦气流量35slm，等离子喷涂喷嘴距离喷涂基体距离90mm，得到氮化硼纳米片增强Ni 3Al金属间化合物复合涂层。 The above-mentioned plasma spraying feeding material is plasma sprayed, the current is 800A, the voltage is 40V, the main gas argon flow rate is 35slm, the auxiliary gas helium gas flow rate is 35slm, and the distance between the plasma spray nozzle and the spray substrate is 90mm to obtain boron nitride nanosheets reinforced Ni Al intermetallic compound coating.
实施例3Example 3
用电子天平分别称取85wt.％镍粉(～1μm)和15wt.％铝粉(～1μm)；Weigh 85wt.% nickel powder (~1μm) and 15wt.% aluminum powder (~1μm) with an electronic balance;
将镍粉和铝粉放入卧式行星球磨机中加入异丙醇进行球磨，球磨过程中球料比例为4:1，球磨机的转速为300r/min，球磨6小时，得到混合浆料；Put nickel powder and aluminum powder into a horizontal planetary ball mill, add isopropanol for ball milling, the ratio of ball to material is 4:1 in the ball milling process, the rotational speed of the ball mill is 300 r/min, and the ball is milled for 6 hours to obtain a mixed slurry;
将上述混合浆料放在真空干燥箱中70℃干燥，然后研磨成粉末，得到混合粉末；The above mixed slurry is dried in a vacuum drying oven at 70°C, and then ground into powder to obtain mixed powder;
将氮化硼纳米片放在异丙醇中进行超声分散4小时，得到氮化硼纳米片分散液；The boron nitride nanosheets were placed in isopropanol for ultrasonic dispersion for 4 hours to obtain a boron nitride nanosheet dispersion;
将所述混合粉末放入氮化硼纳米片分散液中，用均质机进行搅拌分散，转速为5000rpm，时间为5小时，将得到的混合液在真空干燥箱中80℃干燥，然后研磨成粉末，得到粉体，氮化硼纳米片在粉体中的质量含量为1.5％；Put the mixed powder into the boron nitride nanosheet dispersion liquid, stir and disperse with a homogenizer, the rotation speed is 5000 rpm, and the time is 5 hours, and the obtained mixed liquid is dried in a vacuum drying box at 80° C. powder to obtain powder, and the mass content of boron nitride nanosheets in the powder is 1.5%;
将聚乙二醇溶解在水中，聚乙二醇在水中的质量分数为10wt％，得到聚乙二醇溶液；将上述粉体、水和聚乙二醇溶液按照质量分数比为45:45:10混合，得到浆料；将得到的浆料进行喷雾造粒，喷嘴转速2100rpm，喷嘴进口温度270℃，出口温度115℃，得到球形等离子喷涂喂料；Polyethylene glycol is dissolved in water, and the mass fraction of polyethylene glycol in water is 10 wt % to obtain a polyethylene glycol solution; the above-mentioned powder, water and polyethylene glycol solution are in a mass fraction ratio of 45:45: 10 Mixing to obtain a slurry; spray granulation of the obtained slurry, the nozzle rotation speed is 2100rpm, the nozzle inlet temperature is 270°C, and the outlet temperature is 115°C to obtain spherical plasma spray feed;
将上述等离子喷涂喂料进行等离子喷涂，电流为800A，电压为40V，主气氩气流量35slm，辅气氦气流量35slm，等离子喷涂喷嘴距离喷涂基体距离90mm，得到氮化硼纳米片增强Ni 3Al金属间化合物复合涂层。 The above-mentioned plasma spraying feeding material is plasma sprayed, the current is 800A, the voltage is 40V, the main gas argon flow rate is 35slm, the auxiliary gas helium gas flow rate is 35slm, and the distance between the plasma spray nozzle and the spray substrate is 90mm to obtain boron nitride nanosheets reinforced Ni Al intermetallic compound coating.
性能检测Performance testing
对本发明实施例1～3和比较例1制备得到的等离子喷涂喂料进行SEM检测，检测结果如图1所示(图1中(a)为比较例1，(b)为实施例1，(c)为实施例2，(d)为实施例3)，由图1可知，粉末球形度良好，尺寸分布均匀。The plasma sprayed feeds prepared in Examples 1 to 3 of the present invention and Comparative Example 1 were tested by SEM, and the test results were shown in Figure 1 ((a) in Figure 1 is Comparative Example 1, (b) is Example 1, ( c) is Example 2, (d) is Example 3). It can be seen from Figure 1 that the powder has good sphericity and uniform size distribution.
对本发明实施例1制备的粉体进行SEM检测，检测结果如图2所示，由图2可知，少层氮化硼纳米片均匀分散在粉末内部。The powder prepared in Example 1 of the present invention is subjected to SEM inspection, and the inspection result is shown in Figure 2. It can be seen from Figure 2 that the few-layer boron nitride nanosheets are uniformly dispersed in the powder.
对本发明实施例1～3和比较例1制备的复合涂层进行XRD检测，检测结果如图3所示，由图3可知，氮化硼纳米片增强Ni 3Al金属间化合物复合涂层中主要有Ni 3Al、少量Al 2O 3和NiO。 The composite coatings prepared in Examples 1 to 3 of the present invention and Comparative Example 1 were subjected to XRD detection, and the detection results were shown in Figure 3. It can be seen from Figure 3 that boron nitride nanosheets reinforced Ni 3 Al intermetallic compound composite coatings mainly There is Ni 3 Al, a small amount of Al 2 O 3 and NiO.
对本发明实施例1制备的氮化硼纳米片增强Ni 3Al金属间化合物复合涂层断面进行SEM检测，检测结果如图4所示，由图4可知，少层氮化硼纳米片均匀分散在涂层内部。 The cross section of the boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating prepared in Example 1 of the present invention was tested by SEM. inside the coating.
对本发明实施例1～3和比较例1制备的复合涂层进行硬度检测，经过显微硬度计(XD-1000TMC/LCD，上海泰明光学仪器有限公司)测量得到涂层不添加氮化硼纳米片和添加氮化硼纳米片含量分别为0.5wt.％、1.0wt.％、1.5wt.％的硬度分别是325HV 0.2，358HV 0.2，384HV 0.2及417HV 0.2，如图5所示，可知，随着氮化硼纳米片的增多，涂层的力学性能增强。 The composite coatings prepared in Examples 1 to 3 of the present invention and Comparative Example 1 were tested for hardness, and the coatings were measured by a microhardness tester (XD-1000TMC/LCD, Shanghai Taiming Optical Instrument Co., Ltd.) without adding boron nitride nanosheets. and the hardness of the added boron nitride nanosheets with the content of 0.5wt.%, 1.0wt.% and 1.5wt.% are 325HV 0.2 , 358HV 0.2 , 384HV 0.2 and 417HV 0.2 respectively, as shown in Figure 5, it can be seen that with With the increase of boron nitride nanosheets, the mechanical properties of the coating are enhanced.
对本发明实施例1～3和比较例1制备的复合涂层进行摩擦磨损测试，经过摩擦磨损试验机(HT1000，兰州中科凯华科技开发有限公司)在载荷20N、转速300rpm、旋转半径2mm和对磨球为直径为4mm的氧化铝球测量得到涂层的摩擦系数和磨损量如图6和图7所示，可知，随着氮化硼纳米片的增多，涂层的耐磨和减摩性能提升。The composite coatings prepared in Examples 1 to 3 of the present invention and Comparative Example 1 were subjected to friction and wear tests. After a friction and wear tester (HT1000, Lanzhou Zhongke Kaihua Technology Development Co., Ltd.), the load was 20N, the rotational speed was 300rpm, the rotation radius was 2mm and The friction coefficient and wear amount of the coating obtained by measuring the grinding ball as an alumina ball with a diameter of 4 mm are shown in Figure 6 and Figure 7. It can be seen that with the increase of boron nitride nanosheets, the wear resistance and friction reduction of the coating are improved. Performance improvements.
等离子喷涂制备的层状结构涂层性能主要受到扁平粒子形貌、强度、晶体结构和扁平粒子间及扁平粒子与基体结合强度的影响。本发明提供了一种兼具轻质、高强韧性和润滑性能的氮化硼纳米片增强Ni 3Al金属间化合物复合涂层的制备方法，即采用均质机分散结合喷雾造粒技术制备喷涂喂料，然后将得到的粉末利用等离子喷涂技术烧结制备氮化硼纳米片增强Ni 3Al金属间化合物复合涂层，获得兼备耐高温、耐磨损、耐腐蚀、低摩擦系数等多种优异性能配合的新型氮化硼纳米片增强Ni 3Al金属间化合物复合涂层。 The properties of the layered structure coatings prepared by plasma spraying are mainly affected by the morphology, strength, crystal structure of the flat particles, and the bonding strength between the flat particles and between the flat particles and the substrate. The invention provides a method for preparing a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating with both light weight, high strength and toughness and lubricating properties. Then, the obtained powder is sintered by plasma spraying technology to prepare boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating, which can obtain a combination of high temperature resistance, wear resistance, corrosion resistance, low friction coefficient and other excellent properties. A novel boron nitride nanosheet reinforced Ni 3 Al intermetallic composite coating.
本发明提供了一种氮化硼纳米片增强Ni 3Al金属间化合物复合涂层材料体系，采用氮化硼纳米片(Boron Nitride Nanoplatelet,BNNP)作为增强体，特别的以Ni 3Al作为基体的高温氮化硼纳米片增强Ni3Al金属间化合物复合涂层，利用金属铝化物金属键与共价键共存的强键结合特性、高温硬度高、化学成分特殊等独特的物理化学性质和氮化硼纳米片优异的力学性能等特性，发展兼备耐高温、耐磨损、耐腐蚀、低摩擦系数等多种优异性能配合的氮化硼纳米片增强Ni 3Al金属间化合物复合涂层材料体系。 The invention provides a boron nitride nanoplatelet reinforced Ni 3 Al intermetallic compound composite coating material system. High temperature boron nitride nanosheets reinforced Ni3Al intermetallic compound composite coating, utilizing the strong bonding characteristics of the coexistence of metal aluminide metal bonds and covalent bonds, high temperature hardness, special chemical composition and other unique physical and chemical properties and boron nitride nanosheets With excellent mechanical properties and other characteristics, a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating material system has been developed that combines high temperature resistance, wear resistance, corrosion resistance, low friction coefficient and other excellent properties.
以上所述的仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can also be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (10)

  1. 一种氮化硼纳米片增强Ni 3Al金属间化合物复合涂层的制备方法，包括： A preparation method of boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating, comprising:
    将镍粉和铝粉混合，得到混合粉末；Mixing nickel powder and aluminum powder to obtain mixed powder;
    将所述混合粉末和氮化硼纳米片分散液混合后干燥，得到粉体；Mixing the mixed powder and the boron nitride nanosheet dispersion liquid and drying to obtain a powder;
    将所述粉体进行喷雾造粒，得到喷涂喂料；The powder is spray granulated to obtain a spray feed;
    将所述喷涂喂料进行等离子喷涂，得到氮化硼纳米片增强Ni 3Al金属间化合物复合涂层。 Plasma spraying is performed on the sprayed feed material to obtain a boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating.
  2. 根据权利要求1所述的方法，其特征在于，所述混合粉末的制备方法包括：The method according to claim 1, wherein the preparation method of the mixed powder comprises:
    将镍粉和铝粉用异丙醇进行球磨，得到浆料；The nickel powder and the aluminum powder are ball-milled with isopropanol to obtain a slurry;
    将所述浆料进行干燥后研磨，得到混合粉末；The slurry is dried and then ground to obtain a mixed powder;
    所述球磨过程中的球料比例为(3～5):1，转速为200～400r/min，球磨时间为5～7小时；The ratio of the balls in the ball milling process is (3-5):1, the rotational speed is 200-400r/min, and the ball-milling time is 5-7 hours;
    所述干燥的温度为60～80℃。The drying temperature is 60-80°C.
  3. 根据权利要求1所述的方法，其特征在于，所述镍粉和铝粉的质量比为(80～90)：(10～20)。The method according to claim 1, wherein the mass ratio of the nickel powder and the aluminum powder is (80-90): (10-20).
  4. 根据权利要求1所述的方法，其特征在于，所述氮化硼纳米片分散液的制备方法包括：The method according to claim 1, wherein the preparation method of the boron nitride nanosheet dispersion liquid comprises:
    将氮化硼纳米片和异丙醇混合进行超声分散，得到氮化硼纳米片分散液；The boron nitride nanosheets and isopropanol are mixed for ultrasonic dispersion to obtain a boron nitride nanosheet dispersion;
    所述超声分散的时间为3～5小时。The ultrasonic dispersion time is 3 to 5 hours.
  5. 根据权利要求1所述的方法，其特征在于，所述混合粉末和氮化硼纳米片分散液混合的方法包括：The method according to claim 1, wherein the method for mixing the mixed powder and the boron nitride nanosheet dispersion comprises:
    将混合粉末放入氮化硼纳米片分散液中进行搅拌分散；Put the mixed powder into the boron nitride nanosheet dispersion liquid for stirring and dispersing;
    所述搅拌分散过程中的转速为4500～5500rpm，所述搅拌分散的时间为4～6小时。The rotational speed in the stirring and dispersing process is 4500-5500 rpm, and the stirring and dispersing time is 4-6 hours.
  6. 根据权利要求1所述的方法，其特征在于，所述混合粉末和氮化硼纳米片分散液混合后干燥的温度为75～85℃。The method according to claim 1, wherein the mixed powder and the boron nitride nanosheet dispersion are mixed and dried at a temperature of 75-85°C.
  7. 根据权利要求1所述的方法，其特征在于，所述氮化硼纳米片在粉体中的质量含量为0.5～1.5％。The method according to claim 1, wherein the mass content of the boron nitride nanosheets in the powder is 0.5-1.5%.
  8. 根据权利要求1所述的方法，其特征在于，所述等离子喷涂过程中的电流为750～850A，电压为35～45V，主气氩气流量为30～40slm，辅气氦气流量为30～40slm。The method according to claim 1, wherein the current in the plasma spraying process is 750-850A, the voltage is 35-45V, the flow of the main gas argon is 30-40 slm, and the flow of the auxiliary gas helium is 30-40 slm. 40slm.
  9. 根据权利要求1所述的方法，其特征在于，所述等离子喷涂过程中喷嘴距离喷涂基体的距离为80～100mm。The method according to claim 1, wherein the distance between the nozzle and the sprayed substrate in the plasma spraying process is 80-100 mm.
  10. 一种权利要求1所述的方法制备得到的氮化硼纳米片增强Ni 3Al金属间化合物复合涂层。 A boron nitride nanosheet reinforced Ni 3 Al intermetallic compound composite coating prepared by the method of claim 1 .
PCT/CN2020/141146 2020-11-20 2020-12-30 Composite coating of nickel aluminide intermetallic compound reinforced by boron nitride nanosheet and preparation method therefor WO2022105030A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011313515.9 2020-11-20
CN202011313515.9A CN112553566A (en) 2020-11-20 2020-11-20 Boron nitride nanosheet enhanced nickel-aluminide intermetallic compound composite coating and preparation method thereof

Publications (1)

Publication Number Publication Date
WO2022105030A1 true WO2022105030A1 (en) 2022-05-27

Family

ID=75044430

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/141146 WO2022105030A1 (en) 2020-11-20 2020-12-30 Composite coating of nickel aluminide intermetallic compound reinforced by boron nitride nanosheet and preparation method therefor

Country Status (2)

Country Link
CN (1) CN112553566A (en)
WO (1) WO2022105030A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117230399A (en) * 2023-11-16 2023-12-15 北矿新材科技有限公司 Dispersion strengthening composite powder for infrared stealth material, preparation method thereof and infrared stealth coating

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113897585B (en) * 2021-10-11 2022-06-17 芜湖映日科技股份有限公司 Silicon-chromium rotary sputtering target material and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101058881A (en) * 2007-06-04 2007-10-24 西安交通大学 Method for preparing compound coat between metals
CN108866536A (en) * 2018-06-26 2018-11-23 新余学院 A kind of nanometer crystalline Ni Al/Ni of fabricated in situ3The preparation method of compound coat between Al bimetallic

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101058881A (en) * 2007-06-04 2007-10-24 西安交通大学 Method for preparing compound coat between metals
CN108866536A (en) * 2018-06-26 2018-11-23 新余学院 A kind of nanometer crystalline Ni Al/Ni of fabricated in situ3The preparation method of compound coat between Al bimetallic

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
CAO JINHUA: "Mechanical and Thermal Shock Properties of Plasma Sprayed Boron Nitride Nanoplatelets Reinforced CeO2 Based Electrolyte", CHINESE MASTER’S THESES FULL-TEXT DATABASE, ENGINEERING SCIENCE AND TECHNOLOGY I, no. 4, 15 April 2020 (2020-04-15), XP055932100 *
CHOU T. C.: "Interfacial reaction of BN/Ni 3 Al", APPLIED PHYSICS LETTERS, AMERICAN INSTITUTE OF PHYSICS, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747, vol. 53, no. 16, 17 October 1988 (1988-10-17), 2 Huntington Quadrangle, Melville, NY 11747, pages 1500 - 1502, XP055932090, ISSN: 0003-6951, DOI: 10.1063/1.100467 *
DU, L. ; ZHANG, W. ; LIU, W. ; ZHANG, J.: "Preparation and characterization of plasma sprayed Ni"3Al-hBN composite coating", SURFACE AND COATINGS TECHNOLOGY, ELSEVIER, NL, vol. 205, no. 7, 25 December 2010 (2010-12-25), NL , pages 2419 - 2424, XP027533956, ISSN: 0257-8972 *
GOPINATH E., KANISHKA A. SAI, THARUN K. SAI, SRIKAR P., BEHARA AJIT: "Homogenized mixture (Ni-Al-hBN) plasma sprayed on mild steel by varying spray velocity", MATERIALS TODAY: PROCEEDINGS, ELSEVIER, NL, vol. 33, 1 January 2020 (2020-01-01), NL , pages 5602 - 5606, XP055932096, ISSN: 2214-7853, DOI: 10.1016/j.matpr.2020.03.708 *
SONG YING; HE GUANGYU; WANG YONGGUANG; CHEN YAO: "Tribological behavior of boron nitride nanoplatelet reinforced Ni3Al intermetallic matrix composite fabricated by selective laser melting", MATERIALS & DESIGN, ELSEVIER, AMSTERDAM, NL, vol. 165, 1 January 1900 (1900-01-01), AMSTERDAM, NL , XP085595083, ISSN: 0264-1275, DOI: 10.1016/j.matdes.2018.107579 *
YAO CHEN ET AL: "BN nanosheet reinforced Ni3Al composite with improved tribological behavior under isooctane-lubricated sliding condition", INTERMETALLICS, vol. 126, 6 October 2020 (2020-10-06), XP086294578, DOI: 10.1016/j.intermet.2020.106936 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117230399A (en) * 2023-11-16 2023-12-15 北矿新材科技有限公司 Dispersion strengthening composite powder for infrared stealth material, preparation method thereof and infrared stealth coating
CN117230399B (en) * 2023-11-16 2024-02-02 北矿新材科技有限公司 Dispersion strengthening composite powder for infrared stealth material, preparation method thereof and infrared stealth coating

Also Published As

Publication number Publication date
CN112553566A (en) 2021-03-26

Similar Documents

Publication Publication Date Title
WO2022105029A1 (en) Boron nitride nanosheet reinforced nickel-based composite coating and preparation method therefor
WO2022105030A1 (en) Composite coating of nickel aluminide intermetallic compound reinforced by boron nitride nanosheet and preparation method therefor
CN107500782B (en) Preparation method of modified antifriction wear-resistant corrosion-resistant nano ceramic powder material for additive manufacturing
CN107243640B (en) High-performance metal ceramic composite powder used as thermal spraying structure feed and preparation method thereof
Du et al. Preparation and characterization of plasma sprayed Ni3Al–hBN composite coating
CN112725716B (en) Core-shell structure ceramic composite powder for thermal spraying and preparation method thereof
TW202120709A (en) Aluminum-cobalt-chromium-iron-nickel-silicon alloy, powder and coating thereof
CN102311114A (en) Preparation method of nanometer tungsten carbide
CN109881141B (en) NiCoCrAlY/Cr2O3-Ag-CaF2.BaF2High-temperature solid self-lubricating wear-resistant coating
CN112831199A (en) High-temperature-resistant and erosion-resistant phosphate coating for blades and preparation and application methods thereof
Jin et al. Effect of YSZ fibers and carbon nanotubes on bonding strength and thermal cycling lifetime of YSZ-La2Zr2O7 thermal barrier coatings
Zhang et al. Wear behaviors of 5 wt% SiO2–Ni60 coatings deposited by atmospheric plasma spraying under dry and water-lubrication sliding conditions
CN107604299B (en) Composite material for heat-insulating coating and preparation method of coating
Zakeri et al. A comparative study on the microstructure evolution of conventional and nanostructured MCrAlY powders at high-temperature
Kim et al. Poly (phenylene sulfide) graphite composites with graphite nanoplatelets as a secondary filler for bipolar plates in fuel cell applications
CN115141497A (en) High-thermal-conductivity wear-resistant material for circulating fluidized bed boiler and preparation method thereof
Ma et al. Tribology properties of titanium‐based metals reinforced by BN nanosheets
CN107653430A (en) A kind of ceramic-metal composite and its coating production
CN100535190C (en) A preparation method of composite coating (FeAl+Cr7C3)/γ-(Fe, ni)
JP3426987B2 (en) Corrosion- and wear-resistant coating member for high temperature, manufacturing method, and gas turbine blade
Zou et al. Tribological properties and corrosion behavior of AC-HVAF sprayed nanostructured NiCrCoAlY-TiB2 coatings
Liu et al. Application of spherical ultrafine CuO@ AP with core–shell in AP/HTPB composite solid propellant
CN109182946A (en) A kind of high temperature resistant coating formula of wear-and corrosion-resistant for water conservancy hydraulic headstock gear piston rod, coating and preparation method thereof
CN113151770B (en) Composite coating and preparation method thereof
CN115287488A (en) Diamond-graphene hybrid reinforced copper-based composite material and preparation method thereof

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20962321

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20962321

Country of ref document: EP

Kind code of ref document: A1