CN110684979A - Method for preparing hard alloy coating by cold spraying - Google Patents
Method for preparing hard alloy coating by cold spraying Download PDFInfo
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- CN110684979A CN110684979A CN201911063666.0A CN201911063666A CN110684979A CN 110684979 A CN110684979 A CN 110684979A CN 201911063666 A CN201911063666 A CN 201911063666A CN 110684979 A CN110684979 A CN 110684979A
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- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/021—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
- C23C28/022—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer with at least one MCrAlX layer
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- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
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- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/027—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal matrix material comprising a mixture of at least two metals or metal phases or metal matrix composites, e.g. metal matrix with embedded inorganic hard particles, CERMET, MMC.
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- 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
- C23C4/073—Metallic material containing MCrAl or MCrAlY alloys, where M is nickel, cobalt or iron, with or without non-metal elements
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- 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
- C23C4/129—Flame spraying
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- 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
- C23C4/131—Wire arc spraying
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- 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
Abstract
The invention relates to a method for preparing a hard alloy coating by cold spraying, belonging to the technical field of cold spraying. The method for preparing the hard alloy coating by cold spraying comprises the following steps: (1) coating a NiCrAlY bottom layer on the surface of a metal substrate; (2) cold spraying TiC and TiN on NiCrAlY bottom layer0.3The Ti (C, N) hard alloy layer is prepared. The Ti (C, N) -based hard alloy is successfully prepared by adopting a cold spraying process, the bonding strength of the hard alloy and a matrix is high, and the coating structureCompact, low porosity, and can be used for improving the wear resistance, corrosion resistance and high temperature resistance of the matrix material.
Description
Technical Field
The invention relates to the technical field of cold spraying, in particular to a method for preparing a hard alloy coating by cold spraying.
Background
The Ti (C, N) based hard alloy has better high temperature performance, wear resistance and chemical stability than the traditional hard alloy, and can save a great deal of strategic 'tungsten' and 'cobalt' resources, thus becoming a research hotspot of the hard alloy in recent years. The Ti (C, N) -based hard alloy has poor plastic deformation resistance and toughness, and Kieffer et al can improve the mechanical properties at room temperature and high temperature after adding TiN in a non-stoichiometric ratio into TiC, and more importantly, because a large number of N vacancy defects exist in TiNx in the non-stoichiometric ratio, the sintering temperature of the Ti (C, N) -based hard alloy is reduced, and the mechanical properties with excellent properties can be obtained at a not very high sintering temperature. However, the hot press sintering process limits the application of Ti (C, N) -based cemented carbides.
Cold Spray Coating (CGDS) is a technique in which compressed Gas is used as an accelerating medium to drive metal or alloy particles to impact a base material at a very high speed in a solid state, so that the particles are strongly plastically deformed to deposit and form a coating.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide a method for preparing a hard alloy coating by cold spraying.
The method for preparing the hard alloy coating by cold spraying is characterized by comprising the following steps:
(1) coating a NiCrAlY bottom layer on the surface of a metal substrate;
(2) cold spraying TiC and TiN on NiCrAlY bottom layer0.3The Ti (C, N) hard alloy layer is prepared.
Wherein, the method also comprises the step (3), the heat treatment is carried out at the temperature of 600-950 ℃, and the heat treatment time is 10-30 min.
Wherein the cold spraying process conditions are as follows: n2 is used as working gas, the gas temperature is 350-500 ℃, the gas pressure is 3.0-6.0 MPa, and the spraying distance is 25-50 mm.
Wherein the metal matrix is an iron-based, nickel-based or titanium-based matrix.
The NiCrAlY bottom layer is prepared through a spraying process, and the spraying process can be selected from electric arc spraying, flame spraying, plasma spraying and the like.
Wherein, in the NiCrAlY bottom layer, the content of Cr is 12-30 at%, the content of al is 5.0-12.0 at%, the content of Y is 0.5-1.5 at% of Y, and the balance is Ni.
Wherein, the TiC and TiN0.3The mixed powder of (2) is ball-milled and granulated.
Wherein, the TiC and TiN0.3The mass ratio of (A) to (B) is 2: 8-3: 7.
The second aspect of the invention also relates to a hard alloy coating prepared by the preparation method.
Wherein the thickness of the NiCrAlY bottom layer is 0.1-0.5 mm, and the thickness of the coating is 0.1-1.0 mm.
Compared with the prior art, the method for preparing the hard alloy coating by cold spraying has the following beneficial effects:
the Ti (C, N) -based hard alloy is successfully prepared by adopting a cold spraying process, the bonding strength of the hard alloy and a matrix is high, the coating structure is compact, the porosity is low, and the Ti (C, N) -based hard alloy can be used for improving the wear resistance, corrosion resistance and high temperature resistance of matrix materials.
Detailed Description
The method for preparing a hard alloy coating by cold spraying according to the present invention will be further described with reference to the following specific examples to help those skilled in the art to have a more complete, accurate and thorough understanding of the technical solution of the present invention.
TiN in the following examples0.3The powder is prepared by the following method:
the raw materials are Ti powder (purity is more than 99.36%, granularity is less than 30 mu m) and CH4N2O (analytically pure). Ti powder and CH4N2O is mixed in a molar ratio of 6: 1. In a glove box filled with argon, Ti powder and CH4N2And putting the O into a WC hard alloy ball milling tank. The mass ratio of the balls to the materials is 20: 1. Three large, medium and small WC hard alloy balls with the diameters of 8mm, 5mm and 2mm respectively are used, and the mass ratio of the large, medium and small WC hard alloy balls is 3: 1. Ball milling is carried out on a planetary ball mill (QM-3SP4 type, China) for 60 hours, the mill is stopped for 30min every 2 hours for heat dissipation, and the rotating speed is set to be 450 r/min.
TiN0.3(self-made) and TiC (commercially available, granularity of 1-3 μm, purity of more than 99%) are proportioned, and ball milled for 30min by a planetary ball mill (QM-3SP4 type, China) with a ball-material mass ratio of 10: 1, the ball milling tank is a WC hard alloy tank (250ml), and the diameters of the WC hard alloy balls are respectively equal to that of the WC hard alloy tank8mm and 5mm, the mass ratio of the big ball to the small ball is 6: 4, and the rotating speed is set to be 300 r/min. Then water and organic binder CMC are added for spray granulation to obtain composite powder with the average grain diameter of 35 mu m.
Example 1
Ni with the thickness of 0.2mm is firstly deposited on the surface of 20Cr alloy steel through electric arc spraying71Cr18Al10Y1Bottom layer, then cold spraying the TiN0.3And TiC are subjected to ball milling and spray granulation to obtain composite powder (TiN)0.3The mass ratio of TiC to N is 4: 1), and the working gas is N2The gas temperature is 500 ℃, the gas pressure is 5.0MPa, the spraying distance is 30mm, and the scanning speed of the spray gun is 1 mm/s. Finally, heat treatment is carried out at 700 ℃ for 30 min. The resulting coating had a thickness of 0.8mm, a porosity of 1.5% and a bond strength with the substrate of 51 MPa.
Example 2
Ni with the thickness of 0.2mm is firstly deposited on the surface of 20Cr alloy steel through electric arc spraying71Cr18Al10Y1Bottom layer, then cold spraying the TiN0.3And TiC are subjected to ball milling and spray granulation to obtain composite powder (TiN)0.3The mass ratio of TiC to N is 4: 1), and the working gas is N2The gas temperature is 500 ℃, the gas pressure is 3.0MPa, the spraying distance is 20mm, and the scanning speed of the spray gun is 1 mm/s. Finally, heat treatment is carried out for 30min at 800 ℃. The resulting coating had a thickness of 0.6mm, a porosity of 1.2% and a bond strength with the substrate of 65 MPa.
Example 3
Ni with the thickness of 0.2mm is firstly deposited on the surface of the Cr15Ni60 alloy by electric arc spraying69Cr18Al12Y1Bottom layer, then cold spraying the TiN0.3And TiC are subjected to ball milling and spray granulation to obtain composite powder (TiN)0.3The mass ratio of TiC to N is 7: 3), and the working gas is N2The gas temperature is 500 ℃, the gas pressure is 5.0MPa, the spraying distance is 30mm, and the scanning speed of the spray gun is 1 mm/s. Finally, heat treatment is carried out for 30min at 800 ℃. The resulting coating had a thickness of 0.8mm, a porosity of 1.2% and a bond strength with the substrate of 63 MPa.
Example 4
Ni with the thickness of 0.2mm is firstly deposited on the surface of TC4 titanium alloy steel through electric arc spraying71Cr18Al10Y1Bottom layer, then cold spraying the TiN0.3And TiC are subjected to ball milling and spray granulation to obtain composite powder (TiN)0.3The mass ratio of TiC to N is 7: 3), and the working gas is N2The gas temperature is 500 ℃, the gas pressure is 5.0MPa, the spraying distance is 25mm, and the scanning speed of the spray gun is 1 mm/s. Finally, heat treatment is carried out for 30min at 800 ℃. The resulting coating had a thickness of 0.5mm, a porosity of 1.0% and a bond strength with the substrate of 59 MPa.
Example 5
Ni with the thickness of 0.2mm is firstly deposited on the surface of TC4 titanium alloy steel through electric arc spraying66Cr25Al8Y1Bottom layer, then cold spraying the TiN0.3And TiC are subjected to ball milling and spray granulation to obtain composite powder (TiN)0.3The mass ratio of TiC to N is 7: 3), and the working gas is N2The gas temperature is 500 ℃, the gas pressure is 5.0MPa, the spraying distance is 25mm, and the scanning speed of the spray gun is 1 mm/s. Finally, heat treatment is carried out for 30min at 800 ℃. The resulting coating had a thickness of 0.5mm, a porosity of 1.0% and a bond strength with the substrate of 65 MPa.
Claims (10)
1. A method for preparing a hard alloy coating by cold spraying is characterized by comprising the following steps:
(1) coating a NiCrAlY bottom layer on the surface of a metal substrate;
(2) cold spraying TiC and TiN on NiCrAlY bottom layer0.3The Ti (C, N) hard alloy layer is prepared.
2. The method for preparing a hard alloy coating by cold spraying according to claim 1, which comprises the step (3) of performing heat treatment at a temperature of 600 to 950 ℃ for 10 to 30 min.
3. The method for preparing a hard alloy coating by cold spraying according to claim 1, wherein the process conditions of the cold spraying are as follows: n2 is used as working gas, the gas temperature is 350-500 ℃, the gas pressure is 3.0-6.0 MPa, and the spraying distance is 25-50 mm.
4. The method of cold spray producing a cemented carbide coating according to claim 1, characterized in that: the metal matrix is an iron-based, nickel-based or titanium-based matrix.
5. The method of cold spray producing a cemented carbide coating according to claim 1, characterized in that: the NiCrAlY bottom layer is prepared by a spraying process, and the spraying process is arc spraying, flame spraying or plasma spraying.
6. The method of cold spray producing a cemented carbide coating according to claim 1, characterized in that: in the NiCrAlY bottom layer, the content of Cr is 12-30 at%, the content of Al is 5.0-12.0 at%, the content of Y is 0.5-1.5 at%, and the balance is Ni.
7. The method of cold spray producing a cemented carbide coating according to claim 1, characterized in that: the TiC and TiN0.3The mixed powder of (2) is ball-milled and granulated.
8. The method of cold spray producing a cemented carbide coating according to claim 1, characterized in that: the TiC and TiN0.3The mass ratio of (A) to (B) is 2: 8-3: 7.
9. A hard alloy coating characterized by being produced by the method according to any one of claims 1 to 8.
10. The cemented carbide coating of claim 9, characterized in that: the thickness of NiCrAlY bottom is 0.1-0.5 mm, and the thickness of coating is 0.1-1.0 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911063666.0A CN110684979B (en) | 2019-11-01 | 2019-11-01 | Method for preparing hard alloy coating by cold spraying |
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| CN201911063666.0A CN110684979B (en) | 2019-11-01 | 2019-11-01 | Method for preparing hard alloy coating by cold spraying |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115138539A (en) * | 2022-06-28 | 2022-10-04 | 贵州兰鑫石墨机电设备制造有限公司 | Glue injection repairing method and glue injection device for abnormal sound of distance tube of graphite tube heat exchanger |
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| US20020081449A1 (en) * | 2000-12-21 | 2002-06-27 | Guocun Chen | Coated article |
| CN1607051A (en) * | 2003-10-15 | 2005-04-20 | 联合工艺公司 | Refractory metal core coating |
| CN101367511A (en) * | 2008-08-06 | 2009-02-18 | 燕山大学 | Method for preparing non-stoichiometry ratio nano TiNx with reaction ball milling method |
| US20120111525A1 (en) * | 2010-11-05 | 2012-05-10 | Bochiechio Mario P | High temperature die casting apparatus and method therefor |
| US20170030204A1 (en) * | 2010-05-28 | 2017-02-02 | Vladimir Gorokhovsky | Erosion And Corrosion Resistant Protective Coatings For Turbomachinery |
-
2019
- 2019-11-01 CN CN201911063666.0A patent/CN110684979B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020081449A1 (en) * | 2000-12-21 | 2002-06-27 | Guocun Chen | Coated article |
| CN1607051A (en) * | 2003-10-15 | 2005-04-20 | 联合工艺公司 | Refractory metal core coating |
| CN101367511A (en) * | 2008-08-06 | 2009-02-18 | 燕山大学 | Method for preparing non-stoichiometry ratio nano TiNx with reaction ball milling method |
| US20170030204A1 (en) * | 2010-05-28 | 2017-02-02 | Vladimir Gorokhovsky | Erosion And Corrosion Resistant Protective Coatings For Turbomachinery |
| US20120111525A1 (en) * | 2010-11-05 | 2012-05-10 | Bochiechio Mario P | High temperature die casting apparatus and method therefor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115138539A (en) * | 2022-06-28 | 2022-10-04 | 贵州兰鑫石墨机电设备制造有限公司 | Glue injection repairing method and glue injection device for abnormal sound of distance tube of graphite tube heat exchanger |
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Effective date of registration: 20210127 Address after: No. 666, Qianjin Road, Danyang Development Zone, Zhenjiang City, Jiangsu Province Applicant after: Jiangsu Fengtai Tools Co.,Ltd. Applicant after: Yanshan University Address before: 212300 west side of Chenjia village toll station, 122 provincial road, Danyang Development Zone, Jiangsu Province Applicant before: Jiangsu Fengtai Tools Co.,Ltd. |
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