CN117144176A - (Ti, mo) C/nickel-based high-temperature composite material and preparation method thereof - Google Patents
(Ti, mo) C/nickel-based high-temperature composite material and preparation method thereof Download PDFInfo
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 171
- 239000002131 composite material Substances 0.000 title claims abstract description 102
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 86
- 238000002360 preparation method Methods 0.000 title claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 64
- 238000000034 method Methods 0.000 claims abstract description 50
- 239000011812 mixed powder Substances 0.000 claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000011065 in-situ storage Methods 0.000 claims abstract description 23
- 238000009768 microwave sintering Methods 0.000 claims abstract description 17
- 238000000498 ball milling Methods 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 26
- 239000002245 particle Substances 0.000 claims description 25
- 238000005245 sintering Methods 0.000 claims description 20
- 230000032683 aging Effects 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 11
- 230000005501 phase interface Effects 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 10
- 229910000765 intermetallic Inorganic materials 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims 2
- 230000002787 reinforcement Effects 0.000 abstract description 49
- 238000005260 corrosion Methods 0.000 abstract description 15
- 230000007797 corrosion Effects 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 11
- 230000003014 reinforcing effect Effects 0.000 description 9
- 238000009826 distribution Methods 0.000 description 7
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 6
- 238000004321 preservation Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005551 mechanical alloying Methods 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/23—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces involving a self-propagating high-temperature synthesis or reaction sintering step
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0433—Nickel- or cobalt-based alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0052—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
- B22F2003/1054—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding by microwave
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The application provides a (Ti, mo) C/nickel-based high-temperature composite material and a preparation method thereof, wherein Ni, ti, mo and graphite powder are mixed to obtain mixed powder, the mixed powder is ball-milled to obtain ball-milled powder, the ball-milled powder is pressed into a blank, and the blank is molded by a microwave sintering method to obtain the (Ti, mo) C/nickel-based high-temperature composite material; thus, not only the combination property between the reinforcement body and other phases is ensured, but also the formed reinforcement body is relatively uniformly distributed; and the reinforcement formed in situ is a thermodynamically stable phase, is beneficial to working under a high-temperature working condition, and can achieve a better reinforcement effect, so that the strength, hardness, wear resistance and corrosion resistance of the composite material under a high-temperature environment are improved.
Description
Technical Field
The application relates to the technical field of nickel-based composite materials, in particular to a (Ti, mo) C/nickel-based high-temperature composite material and a preparation method thereof.
Background
The nickel-based composite material has good high-temperature strength, abrasion resistance and corrosion resistance, and can be used for turbine components, blades, shells and other key components in the aerospace field. The reinforcement of the nickel-based composite material comprises a plurality of types, wherein TiC has the characteristics of high melting point, high hardness, low density, good heat conductivity, excellent heat stability, wear resistance, corrosion resistance and the like, and can be used as a preferable reinforcement phase for reinforcing the nickel-based composite material, thereby improving the high-temperature mechanical property of the nickel-based composite material.
In the process of reinforcing the nickel-based composite material, the sensitivity of crack defects generated at the interfaces of different phases of the composite material in high-temperature bearing is obviously improved due to larger thermophysical property differences. Meanwhile, the galvanic effect caused by the addition of TiC and the compound appearing at the phase interface lead to a significant decrease in the corrosion resistance of the nickel-based composite.
The preparation method of the nickel-based composite material comprises a casting method, a powder metallurgy method, an electrodeposition method and the like, wherein the reinforcing body is added in an externally-added mode. This approach, while simple, results in a composite material that has relatively weak bonding between the phases and less controllable dispersion of the reinforcement.
Disclosure of Invention
In order to solve the technical problems, the application provides a (Ti, mo) C/nickel-based high-temperature composite material and a preparation method thereof, which not only ensure the combination property between a reinforcement body and other phases, but also ensure that the formed reinforcement body is relatively uniform in distribution; and the reinforcement formed in situ is a thermodynamically stable phase, is beneficial to working under a high-temperature working condition, and can achieve a better reinforcement effect, so that the strength, hardness, wear resistance and corrosion resistance of the composite material under a high-temperature environment are improved.
In order to achieve the above purpose, the technical scheme of the application is as follows:
the application provides a preparation method of a (Ti, mo) C/nickel-based high-temperature composite material, which comprises the steps of mixing Ni, ti, mo and graphite powder to obtain mixed powder, ball-milling the mixed powder to obtain ball-milled powder, pressing the ball-milled powder into a blank, and forming the blank by a microwave sintering method to obtain the (Ti, mo) C/nickel-based high-temperature composite material.
The application provides a (Ti, mo) C/nickel-based high-temperature composite material and a preparation method thereof, which not only ensure the combination property between a reinforcement body and other phases, but also ensure that the formed reinforcement body is relatively uniform in distribution; and the reinforcement formed in situ is a thermodynamically stable phase, is beneficial to working under a high-temperature working condition, and can achieve a better reinforcement effect, so that the strength, hardness, wear resistance and corrosion resistance of the composite material under a high-temperature environment are improved.
As a preferable technical scheme, the (Ti, mo) C/nickel-based high-temperature composite material is prepared by molding a blank by a microwave sintering method, and specifically comprises the following steps: through high-temperature reaction in the sintering process, an intermetallic compound mainly containing TiC is formed by in-situ reaction at a phase interface, and a precipitated phase is generated in subsequent aging treatment so as to comprehensively strengthen the composite material.
As a preferred technical scheme, the Ni, ti, mo and graphite powder are prepared according to the following proportion of 9:1:1:1, mixing the powder according to the mass ratio.
Preferably, the Ni powder has a particle size of 48 to 52. Mu.m, the Ti powder has a particle size of 8 to 12. Mu.m, the Mo powder has a particle size of 8 to 12. Mu.m, and the graphite powder has a particle size of 3 to 7. Mu.m.
As a preferable technical scheme, the mixed powder is ball-milled, and specifically comprises the following steps: adding the mixed powder into a ball milling piece for ball milling to obtain ball-milled powder, wherein the ball-to-material ratio is 5-10: 1 ball milling partIs 10 degrees of vacuum -1 Pa, the ball milling rotating speed is 150-300 r/min, and the ball milling time is 6-10 hours.
As a preferable technical scheme, the ball-milled powder is pressed into a blank, and the method specifically comprises the following steps: and (3) drying the ball-milled powder at 50-70 ℃ for 11-13 h, and then pressing the dried powder into a blank in a die, wherein the pressure of the pressed blank is 250-350 MPa.
As a preferable technical scheme, the (Ti, mo) C/nickel-based high-temperature composite material is prepared by molding a blank by a microwave sintering method, and comprises the following steps: vacuum sintering the blank with microwave power of 1.5-2.5 kW at 1000-1200 deg.c for 6-10 min, cooling to room temperature and taking out to obtain the sintered material.
As a preferable technical scheme, the (Ti, mo) C/nickel-based high-temperature composite material is prepared by molding a blank by a microwave sintering method, and the method further comprises the following steps: aging the sintered material, specifically comprising the following steps: the sintered material is firstly insulated for 5 to 7 hours at the temperature of 700 to 740 ℃, then cooled to 600 to 640 ℃ and insulated for 6 to 12 hours, and finally cooled to room temperature to obtain the (Ti, mo) C/nickel-based high-temperature composite material.
The application also provides a (Ti, mo) C/nickel-based high-temperature composite material, which is prepared by the preparation method of the (Ti, mo) C/nickel-based high-temperature composite material.
The (Ti, mo) C/nickel-based high-temperature composite material and the preparation method thereof provided by the application have the following beneficial effects:
1) According to the (Ti, mo) C/nickel-based high-temperature composite material and the preparation method thereof, ni, ti, mo and graphite powder are firstly mixed, ball-milled and pressed into a blank, and finally the blank is formed by adopting a microwave sintering method, an intermetallic compound mainly of TiC is formed by in-situ reaction at a phase interface through high-temperature reaction in the sintering process, a precipitated phase is generated in subsequent aging treatment, the composite material is comprehensively reinforced, and meanwhile, mo also plays a role in improving the combination property of a matrix and a reinforcement body, so that the strength, hardness, wear resistance and corrosion resistance of the composite material in a high-temperature environment are improved;
2) According to the (Ti, mo) C/nickel-based high-temperature composite material and the preparation method thereof, the reinforcement is formed in the preparation process by an in-situ reaction method, so that on one hand, the combination property between the reinforcement and other phases can be ensured; on the other hand, the formed reinforcement is relatively uniformly distributed; the reinforcement formed in situ is a thermodynamically stable phase, is beneficial to working under a high-temperature working condition, and can achieve a better reinforcement effect;
3) The application provides a (Ti, mo) C/nickel-based high-temperature composite material and a preparation method thereof, wherein the high-temperature nickel-based composite material is prepared by ball milling, sintering and subsequent heat treatment technologies; the composite material is reinforced by forming a reinforcing body mainly of TiC through mechanical alloying in the ball milling process and in-situ reaction in the microwave sintering process, and the reinforcing body formed by the in-situ reaction is uniformly distributed and organically combined with the matrix, so that the interface defect between the reinforcing phase and the matrix is effectively reduced; the precipitated phases are formed through aging treatment and are dispersed and distributed at phase interfaces, so that a certain promotion effect is achieved on the reinforcement of the composite material; in addition, the addition of Mo can improve the wettability between TiC and Ni phases and further improve the binding property of each phase; the method has the advantages of simple process, good repeatability and high process controllability, and the formed nickel-based composite material has good strength, hardness, wear resistance and corrosion resistance under a high-temperature environment through comprehensive reinforcement at different stages in the preparation process.
Drawings
FIG. 1 is an SEM image of a (Ti, mo) C/nickel-based high temperature composite material prepared according to the present application.
Detailed Description
Preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings.
It will be appreciated that the present application achieves the objects of the application by some embodiments.
The application provides a preparation method of a (Ti, mo) C/nickel-based high-temperature composite material, which comprises the following steps:
s1, mixing Ni, ti, mo and graphite powder to obtain mixed powder, wherein the method specifically comprises the following steps: ni, ti, mo and graphite powder were mixed according to 9:1:1:1, mixing powder according to a mass ratio to obtain mixed powder, wherein the particle size of Ni powder is 48-52 mu m, the particle size of Ti powder is 8-12 mu m, the particle size of Mo powder is 8-12 mu m, and the particle size of graphite powder is 3-7 mu m;
s2, ball milling the mixed powder to obtain ball-milled powder, which specifically comprises the following steps: adding the mixed powder into a ball milling piece for ball milling to obtain ball-milled powder, wherein the ball-to-material ratio is 5-10: 1, the vacuum degree of the ball milling piece is 10 -1 Pa, the ball milling rotating speed is 150-300 r/min, and the ball milling time is 6-10 hours;
s3, pressing the ball-milled powder into a blank, which specifically comprises the following steps: drying the ball-milled powder at 50-70 ℃ for 11-13 h, and then pressing the dried powder into a blank in a die, wherein the pressure of the pressed blank is 250-350 MPa;
s4, molding the blank by adopting a microwave sintering method to prepare the (Ti, mo) C/nickel-based high-temperature composite material, which specifically comprises the following steps:
vacuum sintering the blank with microwave power of 1.5-2.5 kW, wherein the sintering temperature is 1000-1200 ℃, the heat preservation time is 6-10 min, forming an intermetallic compound mainly containing TiC through in-situ reaction at a phase interface by high-temperature reaction in the sintering process, generating a precipitated phase in subsequent aging treatment to comprehensively strengthen the composite material, and finally cooling to room temperature and taking out to obtain the sintered material;
aging the sintered material, specifically comprising the following steps: the sintered material is firstly insulated for 5 to 7 hours at the temperature of 700 to 740 ℃, then cooled to 600 to 640 ℃ and insulated for 6 to 12 hours, and finally cooled to room temperature to obtain the (Ti, mo) C/nickel-based high-temperature composite material.
The application also provides a (Ti, mo) C/nickel-based high-temperature composite material, which is prepared according to the preparation method of the (Ti, mo) C/nickel-based high-temperature composite material.
The application provides a (Ti, mo) C/nickel-based high-temperature composite material and a preparation method thereof, which not only ensure the combination property between a reinforcement body and other phases, but also ensure that the formed reinforcement body is relatively uniform in distribution; and the reinforcement formed in situ is a thermodynamically stable phase, is beneficial to working under a high-temperature working condition, and can achieve a better reinforcement effect, so that the strength, hardness, wear resistance and corrosion resistance of the composite material under a high-temperature environment are improved.
Example 1
The embodiment provides a preparation method of a (Ti, mo) C/nickel-based high-temperature composite material, which comprises the following steps:
s1, mixing Ni, ti, mo and graphite powder to obtain mixed powder, wherein the method specifically comprises the following steps: after weighing ni, ti, mo and graphite powders each having a purity of greater than 99.9% on an electronic balance in a glove box of less than 0.1ppm hydrogen and 0.2ppm oxygen, ni, ti, mo and graphite powders each having a purity of greater than 99.9% were mixed according to a 9:1:1:1, mixing powder according to a mass ratio to obtain mixed powder, wherein the particle size of Ni powder is 48 mu m, the particle size of Ti powder is 8 mu m, the particle size of Mo powder is 8 mu m, and the particle size of graphite powder is 3 mu m;
s2, ball milling the mixed powder to obtain ball-milled powder, which specifically comprises the following steps: adding the mixed powder into a ball milling part, and performing ball milling by adopting agate balls to obtain ball-milled powder, wherein the ball-to-material ratio is 5:1, the vacuum degree of the ball milling piece is 10 - 1 Pa, the ball milling rotating speed is 150r/min, and the ball milling time is 10 hours;
s3, pressing the ball-milled powder into a blank, which specifically comprises the following steps: drying the ball-milled powder at 50 ℃ for 13 hours, and then pressing the dried powder into a blank in a die, wherein the pressure of the pressed blank is 250MPa;
s4, molding the blank by adopting a microwave sintering method to prepare the (Ti, mo) C/nickel-based high-temperature composite material, which specifically comprises the following steps: vacuum sintering the blank with microwave power of 1.5kW, wherein the sintering temperature is 1200 ℃, the heat preservation time is 6min, and the high-temperature reaction in the sintering process is adopted to form an intermetallic compound mainly containing TiC in situ at a phase interface, and a precipitated phase is generated in subsequent aging treatment to comprehensively strengthen the composite material, and finally, the composite material is cooled to room temperature and then taken out to obtain a sintered material;
aging the sintered material, specifically comprising the following steps: and (3) preserving the temperature of the sintered material at 700 ℃ for 5 hours, cooling to 600 ℃ and preserving the temperature for 12 hours, and finally cooling to room temperature to obtain the (Ti, mo) C/nickel-based high-temperature composite material.
The application also provides a (Ti, mo) C/nickel-based high-temperature composite material, which is prepared according to the preparation method of the (Ti, mo) C/nickel-based high-temperature composite material.
The application provides a (Ti, mo) C/nickel-based high-temperature composite material and a preparation method thereof, which not only ensure the combination property between a reinforcement body and other phases, but also ensure that the formed reinforcement body is relatively uniform in distribution; and the reinforcement formed in situ is a thermodynamically stable phase, is beneficial to working under a high-temperature working condition, and can achieve a better reinforcement effect, so that the strength, hardness, wear resistance and corrosion resistance of the composite material under a high-temperature environment are improved.
Example 2
The embodiment provides a preparation method of a (Ti, mo) C/nickel-based high-temperature composite material, which comprises the following steps:
s1, mixing Ni, ti, mo and graphite powder to obtain mixed powder, wherein the method specifically comprises the following steps: after weighing ni, ti, mo and graphite powders each having a purity of greater than 99.9% on an electronic balance in a glove box of less than 0.1ppm hydrogen and 0.2ppm oxygen, ni, ti, mo and graphite powders each having a purity of greater than 99.9% were mixed according to a 9:1:1:1, mixing powder according to a mass ratio to obtain mixed powder, wherein the particle size of Ni powder is 52 mu m, the particle size of Ti powder is 12 mu m, the particle size of Mo powder is 12 mu m, and the particle size of graphite powder is 7 mu m;
s2, ball milling the mixed powder to obtain ball-milled powder, which specifically comprises the following steps: adding the mixed powder into a ball milling part, and performing ball milling by adopting agate balls to obtain ball-milled powder, wherein the ball-to-material ratio is 10:1, the vacuum degree of the ball milling piece is 10 -1 Pa, the ball milling rotating speed is 300r/min, and the ball milling time is 6 hours;
s3, pressing the ball-milled powder into a blank, which specifically comprises the following steps: drying the ball-milled powder at 70 ℃ for 11 hours, and then pressing the dried powder into a blank in a die, wherein the pressure of the pressed blank is 350MPa;
s4, molding the blank by adopting a microwave sintering method to prepare the (Ti, mo) C/nickel-based high-temperature composite material, which specifically comprises the following steps:
vacuum sintering the blank with 2.5kW microwave power, wherein the sintering temperature is 1000 ℃, the heat preservation time is 10min, forming an intermetallic compound mainly of TiC through in-situ reaction at a phase interface by high-temperature reaction in the sintering process, generating a precipitated phase in subsequent aging treatment to comprehensively strengthen the composite material, and finally cooling to room temperature and taking out to obtain a sintered material;
aging the sintered material, specifically comprising the following steps: and (3) preserving the temperature of the sintered material at 740 ℃ for 5 hours, cooling to 640 ℃ and preserving the temperature for 6 hours, and finally cooling to room temperature to obtain the (Ti, mo) C/nickel-based high-temperature composite material.
The application also provides a (Ti, mo) C/nickel-based high-temperature composite material, which is prepared according to the preparation method of the (Ti, mo) C/nickel-based high-temperature composite material.
The application provides a (Ti, mo) C/nickel-based high-temperature composite material and a preparation method thereof, which not only ensure the combination property between a reinforcement body and other phases, but also ensure that the formed reinforcement body is relatively uniform in distribution; and the reinforcement formed in situ is a thermodynamically stable phase, is beneficial to working under a high-temperature working condition, and can achieve a better reinforcement effect, so that the strength, hardness, wear resistance and corrosion resistance of the composite material under a high-temperature environment are improved.
Example 3
The embodiment provides a preparation method of a (Ti, mo) C/nickel-based high-temperature composite material, which comprises the following steps:
s1, mixing Ni, ti, mo and graphite powder to obtain mixed powder, wherein the method specifically comprises the following steps: after weighing ni, ti, mo and graphite powders each having a purity of greater than 99.9% on an electronic balance in a glove box of less than 0.1ppm hydrogen and 0.2ppm oxygen, ni, ti, mo and graphite powders each having a purity of greater than 99.9% were mixed according to a 9:1:1:1, mixing powder according to a mass ratio to obtain mixed powder, wherein the particle size of Ni powder is 50 mu m, the particle size of Ti powder is 10 mu m, the particle size of Mo powder is 10 mu m, and the particle size of graphite powder is 5 mu m;
s2, ball milling the mixed powder to obtain ball-milled powder, which specifically comprises the following steps: adding the mixed powder into a ball milling piece for ball milling to obtain ball-milled powder, wherein the ball-to-material ratio is 7.5:1, the vacuum degree of the ball milling piece is 10 -1 Pa, the ball milling rotating speed is 225r/min, and the ball milling time is 8 hours;
s3, pressing the ball-milled powder into a blank, which specifically comprises the following steps: drying the ball-milled powder at 60 ℃ for 12 hours, and then pressing the dried powder into a blank in a die, wherein the pressure of the pressed blank is 300MPa;
s4, molding the blank by adopting a microwave sintering method to prepare the (Ti, mo) C/nickel-based high-temperature composite material, which specifically comprises the following steps: vacuum sintering the blank with 2kW of microwave power, wherein the sintering temperature is 1100 ℃, the heat preservation time is 8min, forming an intermetallic compound mainly containing TiC through in-situ reaction at a phase interface by high-temperature reaction in the sintering process, generating a precipitated phase in subsequent aging treatment to comprehensively strengthen the composite material, and finally cooling to room temperature and taking out to obtain a sintered material;
aging the sintered material, specifically comprising the following steps: and (3) preserving the temperature of the sintered material at 720 ℃ for 6 hours, cooling to 620 ℃ and preserving the temperature for 9 hours, and finally cooling to room temperature to obtain the (Ti, mo) C/nickel-based high-temperature composite material.
The application also provides a (Ti, mo) C/nickel-based high-temperature composite material, which is prepared by the preparation method of the (Ti, mo) C/nickel-based high-temperature composite material.
The application provides a (Ti, mo) C/nickel-based high-temperature composite material and a preparation method thereof, which not only ensure the combination property between a reinforcement body and other phases, but also ensure that the formed reinforcement body is relatively uniform in distribution; and the reinforcement formed in situ is a thermodynamically stable phase, is beneficial to working under a high-temperature working condition, and can achieve a better reinforcement effect, so that the strength, hardness, wear resistance and corrosion resistance of the composite material under a high-temperature environment are improved.
As shown in FIG. 1, SEM images of the surfaces of the (Ti, mo) C/nickel-based high-temperature composite materials prepared by the application show that the (Ti, mo) C/nickel-based high-temperature composite materials prepared in the embodiment 3 have flat surfaces, uniform particle sizes, compactness and no pores, ensure the combination property between reinforcements and other phases, and the formed reinforcements are relatively uniform in distribution, so that the strength, hardness, wear resistance and corrosion resistance of the composite materials in a high-temperature environment can be greatly improved.
The (Ti, mo) C/nickel-based high-temperature composite material and the preparation method thereof provided by the application have the following beneficial effects:
1) According to the (Ti, mo) C/nickel-based high-temperature composite material and the preparation method thereof, ni, ti, mo and graphite powder are firstly mixed, ball-milled and pressed into a blank, and finally the blank is formed by adopting a microwave sintering method, an intermetallic compound mainly of TiC is formed by in-situ reaction at a phase interface through high-temperature reaction in the sintering process, a precipitated phase is generated in subsequent aging treatment, the composite material is comprehensively reinforced, and meanwhile, mo also plays a role in improving the combination property of a matrix and a reinforcement body, so that the strength, hardness, wear resistance and corrosion resistance of the composite material in a high-temperature environment are improved;
2) According to the (Ti, mo) C/nickel-based high-temperature composite material and the preparation method thereof, the reinforcement is formed in the preparation process by an in-situ reaction method, so that on one hand, the combination property between the reinforcement and other phases can be ensured; on the other hand, the formed reinforcement is relatively uniformly distributed; the reinforcement formed in situ is a thermodynamically stable phase, is beneficial to working under a high-temperature working condition, and can achieve a better reinforcement effect;
3) The application provides a (Ti, mo) C/nickel-based high-temperature composite material and a preparation method thereof, wherein the high-temperature nickel-based composite material is prepared by ball milling, sintering and subsequent heat treatment technologies; the composite material is reinforced by forming a reinforcing body mainly of TiC through mechanical alloying in the ball milling process and in-situ reaction in the microwave sintering process, and the reinforcing body formed by the in-situ reaction is uniformly distributed and organically combined with the matrix, so that the interface defect between the reinforcing phase and the matrix is effectively reduced; the precipitated phases are formed through aging treatment and are dispersed and distributed at phase interfaces, so that a certain promotion effect is achieved on the reinforcement of the composite material; in addition, the addition of Mo can improve the wettability between TiC and Ni phases and further improve the binding property of each phase; the method has the advantages of simple process, good repeatability and high process controllability, and the formed nickel-based composite material has good strength, hardness, wear resistance and corrosion resistance under a high-temperature environment through comprehensive reinforcement at different stages in the preparation process.
It will be understood that the application has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the application. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the essential scope thereof. Therefore, it is intended that the application not be limited to the particular embodiments disclosed, but that the application will include all modifications and equivalents falling within the scope of the appended claims. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the essential scope thereof. Therefore, it is intended that the application not be limited to the particular embodiment disclosed, but that the application will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. A preparation method of a (Ti, mo) C/nickel-based high-temperature composite material is characterized in that Ni, ti, mo and graphite powder are mixed to obtain mixed powder, ball milling is carried out on the mixed powder to obtain ball-milled powder, the ball-milled powder is pressed into a blank, and the blank is molded by a microwave sintering method to obtain the (Ti, mo) C/nickel-based high-temperature composite material.
2. The method for preparing the (Ti, mo) C/nickel-based high-temperature composite material according to claim 1, wherein the (Ti, mo) C/nickel-based high-temperature composite material is prepared by molding a blank by a microwave sintering method, and specifically comprises the following steps: through high-temperature reaction in the sintering process, an intermetallic compound mainly containing TiC is formed by in-situ reaction at a phase interface, and a precipitated phase is generated in subsequent aging treatment so as to comprehensively strengthen the composite material.
3. The method of producing a (Ti, mo) C/nickel-based high temperature composite material according to claim 1, wherein the Ni, ti, mo and graphite powder are mixed according to 9:1:1:1, mixing the powder according to the mass ratio.
4. The method for producing a (Ti, mo) C/nickel based high temperature composite material according to claim 3, wherein said Ni powder has a particle diameter of 48 to 52. Mu.m, said Ti powder has a particle diameter of 8 to 12. Mu.m, said Mo powder has a particle diameter of 8 to 12. Mu.m, and said graphite powder has a particle diameter of 3 to 7. Mu.m.
5. The method for preparing the (Ti, mo) C/nickel-based high temperature composite material according to claim 1, wherein the mixed powder is ball-milled, specifically comprising the steps of: adding the mixed powder into a ball milling piece for ball milling to obtain ball-milled powder, wherein the ball-to-material ratio is 5-10: 1, the vacuum degree of the ball milling piece is 10 -1 Pa, the ball milling rotating speed is 150-300 r/min, and the ball milling time is 6-10 hours.
6. The method for preparing the (Ti, mo) C/nickel-based high temperature composite material according to claim 1, wherein the powder after ball milling is pressed into a blank, and the method specifically comprises the following steps: and (3) drying the ball-milled powder at 50-70 ℃ for 11-13 h, and then pressing the dried powder into a blank in a die, wherein the pressure of the pressed blank is 250-350 MPa.
7. The method for preparing the (Ti, mo) C/nickel-based high temperature composite material according to claim 1, wherein the (Ti, mo) C/nickel-based high temperature composite material is prepared by molding a blank by a microwave sintering method, and comprises the following steps: vacuum sintering the blank with microwave power of 1.5-2.5 kW at 1000-1200 deg.c for 6-10 min, cooling to room temperature and taking out to obtain the sintered material.
8. The method for producing a (Ti, mo) C/nickel-based high temperature composite material according to claim 7, wherein the (Ti, mo) C/nickel-based high temperature composite material is produced by molding a preform by a microwave sintering method, further comprising the steps of: aging the sintered material, specifically comprising the following steps: the sintered material is firstly insulated for 5 to 7 hours at the temperature of 700 to 740 ℃, then cooled to 600 to 640 ℃ and insulated for 6 to 12 hours, and finally cooled to room temperature to obtain the (Ti, mo) C/nickel-based high-temperature composite material.
9. (Ti, mo) C/nickel-based high temperature composite material, characterized in that it is prepared according to the method for preparing a (Ti, mo) C/nickel-based high temperature composite material according to any one of claims 1-8.
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