CN112662977A - Preparation method of thermal spraying Ni-based alloy self-lubricating coating - Google Patents
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- 238000000576 coating method Methods 0.000 title claims abstract description 57
- 239000011248 coating agent Substances 0.000 title claims abstract description 55
- 238000007751 thermal spraying Methods 0.000 title claims abstract description 27
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 23
- 239000000956 alloy Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 75
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000005507 spraying Methods 0.000 claims abstract description 43
- 229910009817 Ti3SiC2 Inorganic materials 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 29
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 24
- 239000007921 spray Substances 0.000 claims abstract description 12
- 229910000676 Si alloy Inorganic materials 0.000 claims abstract description 9
- 239000010962 carbon steel Substances 0.000 claims abstract description 4
- 238000000498 ball milling Methods 0.000 claims description 29
- 238000002156 mixing Methods 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 20
- 229910003310 Ni-Al Inorganic materials 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 229910052796 boron Inorganic materials 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000112 cooling gas Substances 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- 238000003801 milling Methods 0.000 claims description 6
- 238000005488 sandblasting Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 10
- 238000007747 plating Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009736 wetting Methods 0.000 abstract description 2
- 239000011812 mixed powder Substances 0.000 abstract 1
- 238000007750 plasma spraying Methods 0.000 abstract 1
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- 238000000227 grinding Methods 0.000 description 5
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- 238000002474 experimental method Methods 0.000 description 4
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- 229910001209 Low-carbon steel Inorganic materials 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
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- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a preparation method of a thermal spraying Ni-based alloy self-lubricating coating, which adopts plasma spraying equipment to spray Ni-Cr-B-Si alloy powder, Ti powder and nickel-coated Ti powder with a certain proportion on the surface of low-carbon steel3SiC2Mixed powder of powders, albeit Ti3SiC2Has good stability, and can further avoid the thermal effect in sprayingDecomposing in the process to ensure good self-lubricating property, and spraying Ti3SiC2Nickel plating treatment is carried out, and a certain amount of Ti is prepared after spraying3SiC2Due to the Ni-based alloy to Ti3SiC2Good wetting, compact coating, low porosity, and Ti3SiC2The lubricating property of the coating is improved due to the good lubricating property of the coating, and the prepared coating has the advantages of high wear resistance and wear reduction.
Description
Technical Field
The invention belongs to the field of high-energy beam surface treatment, and particularly relates to a method for preparing a wear-resistant antifriction composite coating by adopting surface thermal spraying aiming at low-carbon steel.
Background
Mechanical devices are of a wide variety, and some components typically undergo different forms of mechanical movement while they are in operation. The parts move relative to other substances to generate friction in the using process, so that not only can a large amount of heat be generated, but also the parts are worn to different degrees and even early failure is caused, and therefore, higher requirements on the surface wear resistance and the wear reduction performance of the parts are provided. The low-carbon steel has better plasticity and toughness, good welding performance and cold forming performance, can be subjected to cold forming by adopting various stamping methods, and is widely applied, but the application of the low-carbon steel is limited to a certain extent due to lower surface hardness and poor wear resistance. The wear-resistant coating is prepared on the surface of a part, so that the wear resistance of parts can be improved, the service life of mechanical equipment is prolonged, the reliability of the mechanical equipment is improved, the surface of a mating part can be damaged by simply improving the wear resistance sometimes, the wear of the mating part is aggravated, lubrication is needed sometimes to reduce friction, and the effect of common lubricating oil is not good under working conditions such as high temperature, heavy load, vacuum and radiation. One of the effective methods is to prepare a coating on the surface of a part to reduce friction and improve wear resistance. The metal-based self-lubricating coating has good performances of wear resistance, lubrication, high temperature resistance and the like, but the type, the amount and the combination condition of the lubricant and a matrix influence the strength and the toughness of the coating to a certain extent, and if defects such as large cracks, holes and the like occur, the mechanical property of the part can be greatly reduced.
The self-fluxing alloy powder Ni-Cr-B-Si is usually smelted and atomized into powder by water (or gas), wherein boron and silicon can reduce the melting point of the alloy and play a role in slagging so as to avoid oxidation, and chromium in the self-fluxing alloy powder generates chromium carbideAnd the chromium boride hard phase is dispersed in the nickel matrix, so that the alloy powder has the properties of high hardness, high wear resistance, corrosion resistance and the like, is particularly suitable for preparing coatings, and is widely applied to material engineering. The Ni-Cr-B-Si can be sprayed to prepare a wear-resistant coating, so that the wear resistance of parts can be improved, but the high hardness of the coating can aggravate the wear of mating parts on certain occasions, particularly how to improve the lubricating property of the coating under the condition that lubricating oil cannot be adopted, and the problems of temperature rise, wear aggravation of the mating parts and the like caused by friction are solved. Ternary compound Ti3SiC2The microstructure of (a) is a Ti layer shared by two edges connected by a two-dimensional closed filled Si layer6A C octahedral layer structure with a special structure such that Ti3SiC2Has better high-temperature performance, good thermal conductivity and high thermal stability, the layered structure of the material ensures that the material has lower friction coefficient and better self-lubricating property than graphite, and Ti is sprayed in the spraying process3SiC2The lubricating performance of the coating can be improved by adding the lubricating agent into the coating, but the high temperature such as plasma arc, flame and the like can cause the coating to be decomposed and lose the lubricating effect, so that the lubricating agent can be used for Ti3SiC2Nickel plating treatment is carried out to avoid high-temperature decomposition, and the Ni-based self-fluxing alloy can not only be used for plating nickel Ti3SiC2Good wetting, addition of Ti by thermal spraying3SiC2The obtained Ni-based coating has the characteristics of wear resistance and friction reduction.
Disclosure of Invention
The invention designs that nickel-plated Ti is added into Ni-Cr-B-Si self-fluxing alloy powder3SiC2The coating is sprayed on the surface of carbon steel as a self-lubricating component, has certain lubricity, can reduce friction during working and high temperature generated by the friction, and is particularly suitable for being used under the condition that lubricating oil cannot be used. The coating preparation process has the advantages of simple powder preparation and low cost.
The manufacturing method for solving the technical problem comprises the following process steps:
step one, Ni-Cr-B-Si alloy powder, Ti powder and nickel-coated Ti3SiC2The powder is mixed according to the mass ratio of 78-87: 3-7: 10 to 15 by weightBall milling and mixing by a ball mill to prepare spraying powder, wherein the particle size of the prepared powder is 25-60 mu m; wherein the mass content of the Ni-Cr-B-Si component is Cr: 16-18%, B: 2.5-4.5%, Si: 3-4.5%, C: 0.8-1.1% of Ni; in addition, the purity of the Ti powder is higher than 99.5%, and the particle size is 30-60 mu m; ni coated Ti3SiC2Has a particle size of 50-75 μm, wherein the weight content of nickel is 12-15%, and the balance is Ti3SiC2. Ball milling and mixing are carried out by adopting a steel ball milling tank, wherein the mass ratio of grinding balls to metal powder is 2.6-3.1: 1, a vacuum valve is opened after sealing, vacuum pumping is carried out for 25-35 minutes, the ball milling tank is placed into a planetary ball mill, the rotating speed is 270-320 r/min, the inversion frequency is 30-45 Hz, and ball milling and mixing are carried out for 60-80 minutes.
Selecting the surface of a carbon steel workpiece to be strengthened as a matrix, removing rust and oil stains on the surface of the workpiece, then carrying out sand blasting treatment on the surface of the workpiece to coarsen the surface of the workpiece, and finally preheating the surface of the workpiece by adopting an external heating mode, wherein the preheating temperature is controlled to be 250-300 ℃.
And thirdly, pre-spraying a Ni-Al bonding layer on the surface of the workpiece by adopting a thermal spraying mode, wherein the granularity of the Ni-Al alloy powder is 85-150 mu m, the mass of Al is 9-18%, the balance is Ni, and the thickness of the bonding layer is controlled to be 30-100 mu m.
Heating the mixed spraying powder by adopting plasma thermal spraying equipment according to certain spraying process parameters to thermally spray the surface of the workpiece, and cooling to obtain the wear-resistant coating, wherein the spraying process parameters are as follows: the spraying distance is 90-120mm, the working current is 520-650A, the working voltage is 50-70V, the Ar gas speed is 30-50L/min, H2The speed is 5-10 liters/min, the powder feeding amount is 38-45g/min, the cooling gas pressure is 0.3-0.5MPa, and the moving speed of the spray gun is 30-80 mm/s.
The invention has the beneficial effects that:
(1) the coating sprayed by the invention contains Ti with good high-temperature and self-lubricating properties3SiC2Can reduce the friction of the coating during operation, and further reduce the high temperature generated by the friction, and in addition, Ti3SiC2Better thermal conductivity may also further reduce the coating to some extentHigh temperature of (2).
(2) The Ni-based alloy is adopted as the substrate of the coating, has good high-temperature performance, toughness and wear resistance, and can improve the wear resistance of the coating.
(3) Nickel coated Ti added to coatings3SiC2After nickel plating, certain Ti element is contained in the spraying powder to ensure that Ti is formed3SiC2Has better stability in the high-temperature spraying process and finally keeps Ti3SiC2Good lubricating performance.
Detailed Description
The present invention will be described in detail below with reference to various embodiments. The embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.
Example 1:
step one, Ni-Cr-B-Si alloy powder, Ti powder and nickel-coated Ti3SiC2The powder is prepared from the following components in percentage by mass: 7: 15, and ball-milling and mixing the mixture by using a ball mill to prepare spraying powder, wherein the particle size of the prepared powder is 25-60 mu m; wherein the mass content of the Ni-Cr-B-Si component is Cr: 16-18%, B: 2.5-4.5%, Si: 3-4.5%, C: 0.8-1.1% of Ni; in addition, the purity of the Ti powder is higher than 99.5%, and the particle size is 30-60 mu m; ni coated Ti3SiC2Has a particle size of 50-75 μm, wherein the weight content of nickel is 12-15%, and the balance is Ti3SiC2. The ball milling and mixing are carried out by adopting a steel ball milling tank, wherein the mass ratio of the milling balls to the metal powder is 2.6: 1, the vacuum valve is opened after the sealing, the vacuum pumping is carried out for 25 minutes, the ball milling tank is placed into a planetary ball mill, the rotating speed is 270r/min, the inversion frequency is 30Hz, and the ball milling and mixing time is 60 minutes.
Selecting Q235 steel as a matrix, removing rust and oil stains on the surface of the workpiece, then carrying out sand blasting treatment on the surface of the workpiece to coarsen the surface of the workpiece, and finally preheating the surface of the workpiece by adopting an external heating mode, wherein the preheating temperature is controlled at 250 ℃.
And thirdly, pre-spraying a Ni-Al bonding layer on the surface of the workpiece by adopting a thermal spraying mode, wherein the granularity of the used Ni-Al alloy powder is 85-150 mu m, the mass of Al is 9 percent, the balance is Ni, and the thickness of the bonding layer is controlled to be 30 mu m.
Heating the mixed spraying powder by adopting plasma thermal spraying equipment according to certain spraying process parameters to thermally spray the surface of the workpiece, and cooling to obtain the wear-resistant coating, wherein the spraying process parameters are as follows: the spraying distance is 90mm, the working current is 520A, the working voltage is 50V, the Ar gas speed is 30 liters/min, and H is2The speed is 5 liters/min, the powder feeding amount is 38g/min, the cooling gas pressure is 0.3MPa, and the moving speed of the spray gun is 30 mm/s.
Experiments show that the coating after the plasma thermal spraying is basically compact and has no air holes, the coating structure is distributed in a layered manner, is basically smooth and has no cracks and cavities, and the coating structure mainly comprises nickel-based solid solution and Ti3SiC2And after the carbide of Cr and a sample of GCr15 are ground, a lubricating film is formed on the surface of the coating, which is favorable for reducing friction, and the carbide and boride in the coating are favorable for improving wear resistance.
Example 2:
step one, Ni-Cr-B-Si alloy powder, Ti powder and nickel-coated Ti3SiC2The powder is prepared from 87 mass percent: 7: 15, ball-milling and mixing to prepare spraying powder, wherein the particle size of the prepared powder is 25-60 mu m; wherein the mass content of the Ni-Cr-B-Si component is Cr: 16-18%, B: 2.5-4.5%, Si: 3-4.5%, C: 0.8-1.1% of Ni; in addition, the purity of the Ti powder is higher than 99.5%, and the particle size is 30-60 mu m; ni coated Ti3SiC2Has a particle size of 50-75 μm, wherein the weight content of nickel is 12-15%, and the balance is Ti3SiC2. The ball milling and mixing are carried out by adopting a steel ball milling tank, wherein the mass ratio of the milling balls to the metal powder is 3.1: 1, the vacuum valve is opened to vacuumize for 35 minutes after the sealing, the ball milling tank is placed into a planetary ball mill, the rotating speed is 320r/min, the inversion frequency is 45Hz, and the ball milling and mixing time is 80 minutes.
And step two, removing rust and oil stains on the surface of a Q345 steel workpiece, then carrying out sand blasting treatment on the surface of the roughened workpiece, and finally preheating the surface of the workpiece by adopting an external heating mode, wherein the preheating temperature is controlled at 300 ℃.
And thirdly, pre-spraying a Ni-Al bonding layer on the surface of the workpiece by adopting a thermal spraying mode, wherein the granularity of the used Ni-Al alloy powder is 85-150 mu m, the mass of Al is 18 percent, the balance is Ni, and the thickness of the bonding layer is controlled to be 100 mu m.
Heating the mixed spraying powder by adopting plasma thermal spraying equipment according to certain spraying process parameters to thermally spray the surface of the workpiece, and cooling to obtain the wear-resistant coating, wherein the spraying process parameters are as follows: the spraying distance is 120mm, the working current is 650A, the working voltage is 70V, the Ar gas speed is 50 liters/min, and H is2The speed is 10 liters/min, the powder feeding amount is 45g/min, the cooling gas pressure is 0.5MPa, and the moving speed of a spray gun is as follows: 80 mm/s.
Experiments show that the plasma thermal spraying process has strong adaptability, the prepared coating is basically compact and has no air holes, the deformation of a workpiece is small, the metallographic structure and the performance of the metallographic structure are not changed, the coating structure is distributed in a layered mode and is smooth, cracks and cavities do not exist, and the coating structure mainly comprises nickel-based solid solution and Ti3SiC2And after the carbide of Cr and a sample of GCr15 are subjected to opposite grinding, a lubricating film can be formed on the surface of the coating, the friction of the prepared coating is reduced, and the wear resistance of the matrix is improved, but the wear resistance is required to be further improved under the conditions of stronger corrosion, heavy load and the like.
Example 3:
step one, Ni-Cr-B-Si alloy powder, Ti powder and nickel-coated Ti3SiC2The powder is prepared from the following components in percentage by mass: 5: 12, and ball-milling and mixing the mixture by using a ball mill to prepare spraying powder, wherein the particle size of the prepared powder is 25-60 mu m; wherein the mass content of the Ni-Cr-B-Si component is Cr: 16-18%, B: 2.5-4.5%, Si: 3-4.5%, C: 0.8-1.1% of Ni; in addition, the purity of the Ti powder is higher than 99.5%, and the particle size is 30-60 mu m; ni coated Ti3SiC2Has a particle size of 50-75 μm, wherein the weight content of nickel is 12-15%, and the balance is Ti3SiC2. Ball milling and mixing are carried out by adopting a steel ball milling tank, wherein the mass ratio of the milling balls to the metal powder is 2.8: 1, the vacuum valve is opened after sealing, the vacuum pump is vacuumized for 30 minutes, the ball milling tank is placed into a planetary ball mill, the rotating speed is 290r/min, and the inversion frequency is higher thanAnd the ball milling and mixing time is 70 minutes at 38 Hz.
Selecting the surface of a Q195 steel workpiece to be strengthened as a matrix, removing rust and oil stains on the surface of the workpiece, then carrying out sand blasting treatment on the surface of the roughened workpiece, and finally preheating the surface of the workpiece by adopting an external heating mode, wherein the preheating temperature is controlled at 270 ℃.
And thirdly, pre-spraying a Ni-Al bonding layer on the surface of the workpiece by adopting a thermal spraying mode, wherein the granularity of the used Ni-Al alloy powder is 85-150 mu m, the mass of Al is 12%, the balance is Ni, and the thickness of the bonding layer is controlled to be 60 mu m.
Heating the mixed spraying powder by adopting plasma thermal spraying equipment according to certain spraying process parameters to thermally spray the surface of the workpiece, and cooling to obtain the wear-resistant coating, wherein the spraying process parameters are as follows: the spraying distance is 108mm, the working current is 580A, the working voltage is 60V, the Ar gas speed is 40L/min, and H is2The speed is 8 liters/min, the powder feeding amount is 40g/min, the cooling gas pressure is 0.4MPa, and the moving speed of the spray gun is as follows: 50 mm/s.
Experiments show that the coating after the plasma thermal spraying is compact and has no obvious air holes, the sprayed layer is stacked together in a wave form by crossing numerous deformed particles, basically has a layered structure, has a basically smooth structure and has no cracks and cavities, and the coating structure mainly comprises nickel-based solid solution and Ti3SiC2And Cr carbide is subjected to opposite grinding with a sample of GCr15, and a lubricating film is formed on the surface of the coating, so that the friction is reduced, and the wear resistance of the matrix is improved.
Example 4:
step one, Ni-Cr-B-Si alloy powder, Ti powder and nickel-coated Ti3SiC2The powder is prepared from the following components in percentage by mass: 7: 12, and ball-milling and mixing the mixture by using a ball mill to prepare spraying powder, wherein the particle size of the prepared powder is 25-60 mu m; wherein the mass content of the Ni-Cr-B-Si component is Cr: 16-18%, B: 2.5-4.5%, Si: 3-4.5%, C: 0.8-1.1% of Ni; in addition, the purity of Ti is higher than 99.5%, and the particle size is 30-60 μm; ni coated Ti3SiC2Has a particle size of 50-75 μm, wherein the weight content of nickel is 12-15%, and the balance is Ti3SiC2. The ball milling and mixing are performed by adopting a steel ball milling tankBall milling and mixing are carried out, wherein the mass ratio of the grinding balls to the metal powder is 3: 1, a vacuum valve is opened after sealing, vacuum pumping is carried out for 30 minutes, the ball milling tank is placed into a planetary ball mill, the rotating speed is 300r/min, the inversion frequency is 40Hz, and the ball milling and mixing time is 70 minutes.
Selecting the surface of a Q195 steel workpiece to be strengthened as a matrix, removing rust and oil stains on the surface of the workpiece, performing sand blasting treatment, roughening the surface of the workpiece, and finally preheating the surface of the workpiece by adopting an external heating mode, wherein the preheating temperature is controlled at 270 ℃.
And thirdly, pre-spraying a Ni-Al bonding layer on the surface of the workpiece by adopting a thermal spraying mode, wherein the granularity of the used Ni-Al alloy powder is 85-150 mu m, the mass of Al is 15%, the balance is Ni, and the thickness of the bonding layer is controlled to be 60 mu m.
Heating the mixed spraying powder by adopting plasma thermal spraying equipment according to certain spraying process parameters to thermally spray the surface of the workpiece, and cooling to obtain the wear-resistant coating, wherein the spraying process parameters are as follows: the spraying distance is 95mm, the working current is 600A, the working voltage is 60V, the Ar gas speed is 40L/min, and H is2The speed is 7 liters/min, the powder feeding amount is 39g/min, the cooling gas pressure is 0.4MPa, and the moving speed of the spray gun is as follows: 50 mm/s.
Experiments show that the coating after the plasma thermal spraying is compact and has no obvious air holes, the sprayed layer is stacked together in a wave form by crossing numerous deformed particles, basically has a layered structure, has a basically smooth structure and has no cracks and cavities, and the coating structure mainly comprises nickel-based solid solution and Ti3SiC2And the carbide of Cr is subjected to opposite grinding with a sample of GCr15, so that a lubricating film can be formed on the surface of the coating, the friction is reduced, and the wear resistance of the matrix is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A preparation method of a thermal spraying Ni-based alloy self-lubricating coating is characterized in that self-lubricating components are added into spraying powder, and the prepared coating has the characteristics of friction reduction and wear resistance, and the preparation method comprises the following process steps:
step one, Ni-Cr-B-Si alloy powder, Ti powder and nickel-coated Ti3SiC2Mixing the powder according to a certain proportion, and ball-milling and mixing the powder by using a ball mill to prepare spraying powder, wherein the particle size of the prepared powder is 25-60 mu m;
selecting the surface of a carbon steel workpiece to be strengthened as a matrix, removing rust and oil stains on the surface of the workpiece, then carrying out sand blasting treatment, coarsening the surface of the workpiece, and finally preheating the surface of the workpiece by adopting an external heating mode;
thirdly, pre-spraying a Ni-Al bonding layer on the surface of the workpiece in a thermal spraying mode;
and step four, heating the mixed spraying powder according to certain spraying process parameters by adopting plasma thermal spraying equipment, thermally spraying the surface of the workpiece, and cooling to obtain the wear-resistant coating.
2. The method for preparing the thermal spraying Ni-based alloy self-lubricating coating according to claim 1, wherein the method comprises the following steps: the Ni-Cr-B-Si alloy powder, the Ti powder and the nickel-coated Ti3SiC2The mass ratio of the powder is 78-87: 3-7: 10-15; the Ni-Cr-B-Si alloy powder comprises the following components in percentage by mass: 16-18%, B: 2.5-4.5%, Si: 3-4.5%, C: 0.8-1.1% of Ni; in addition, the purity of Ti is higher than 99.5%, and the particle size is 30-60 μm;ni coated Ti3SiC2Has a particle size of 50-75 μm, wherein the weight content of nickel is 12-15%, and the balance is Ti3SiC2。
3. The method for preparing the thermal spraying Ni-based alloy self-lubricating coating according to claim 1, wherein the method comprises the following steps: the ball milling mixing is carried out by adopting a steel ball milling tank, wherein the mass ratio of milling balls to metal powder is 2.6-3.1: 1, a vacuum valve is opened after sealing, vacuum pumping is carried out for 25-35 minutes, the ball milling tank is placed into a planetary ball mill, the rotating speed is 270-320 r/min, the inversion frequency is 30-45 Hz, and the ball milling mixing time is 60-80 minutes.
4. The method for preparing the thermal spraying Ni-based alloy self-lubricating coating according to claim 1, wherein the method comprises the following steps: and preheating, wherein the temperature of the preheating is controlled to be 250-300 ℃.
5. The preparation method of the thermal spraying Ni-based alloy self-lubricating coating according to claim 1, characterized in that the Ni-Al bonding layer uses Ni-Al alloy powder with the granularity of 85-150 μm, the mass of Al is 9-18%, the rest is Ni, and the thickness of the bonding layer is controlled to be 30-100 μm.
6. The method for preparing the thermal spraying Ni-based alloy self-lubricating coating according to claim 1, wherein the certain spraying process parameters are as follows: the spraying distance is 90-120mm, the working current is 520-650A, the working voltage is 50-70V, the Ar gas speed is 30-50L/min, H2The speed is 5-10 liters/min, the powder feeding amount is 38-45g/min, the cooling gas pressure is 0.3-0.5MPa, and the moving speed of a spray gun is as follows: 30-80 mm/s.
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| CN108118337A (en) * | 2018-01-04 | 2018-06-05 | 苏州科技大学 | A kind of method of plasma beam surface cladding TiN enhancings high-entropy alloy coating |
| CN110205567A (en) * | 2019-06-18 | 2019-09-06 | 河海大学 | A kind of piston ring Fe-based amorphous/MAX phase composite materials and its preparation method and application |
| CN111349881A (en) * | 2020-03-20 | 2020-06-30 | 中国科学院兰州化学物理研究所 | Wide-temperature-range lubricating wear-resistant composite coating and preparation and spraying methods thereof |
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| CN101050692A (en) * | 2007-05-23 | 2007-10-10 | 安东石油技术（集团）有限公司 | Method for preparing self lubricating nickel base alloy spray welding oil pumping rod collar |
| CN108118337A (en) * | 2018-01-04 | 2018-06-05 | 苏州科技大学 | A kind of method of plasma beam surface cladding TiN enhancings high-entropy alloy coating |
| CN110205567A (en) * | 2019-06-18 | 2019-09-06 | 河海大学 | A kind of piston ring Fe-based amorphous/MAX phase composite materials and its preparation method and application |
| CN111349881A (en) * | 2020-03-20 | 2020-06-30 | 中国科学院兰州化学物理研究所 | Wide-temperature-range lubricating wear-resistant composite coating and preparation and spraying methods thereof |
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| CN116140613A (en) * | 2023-02-07 | 2023-05-23 | 深圳市氢蓝时代动力科技有限公司 | Corrosion-resistant conductive coating material for metal bipolar plate and preparation method thereof |
| CN116140613B (en) * | 2023-02-07 | 2023-11-24 | 深圳市氢蓝时代动力科技有限公司 | Corrosion-resistant conductive coating material for metal bipolar plate and preparation method thereof |
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