CN118326317A - Preparation method of dual-phase nanoparticle reinforced alloy wear-resistant coating - Google Patents
Preparation method of dual-phase nanoparticle reinforced alloy wear-resistant coating Download PDFInfo
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- CN118326317A CN118326317A CN202410473095.2A CN202410473095A CN118326317A CN 118326317 A CN118326317 A CN 118326317A CN 202410473095 A CN202410473095 A CN 202410473095A CN 118326317 A CN118326317 A CN 118326317A
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- 238000000576 coating method Methods 0.000 title claims abstract description 95
- 239000011248 coating agent Substances 0.000 title claims abstract description 94
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 41
- 239000000956 alloy Substances 0.000 title claims abstract description 41
- 239000002105 nanoparticle Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 47
- 239000010935 stainless steel Substances 0.000 claims abstract description 22
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 7
- 238000007750 plasma spraying Methods 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000011159 matrix material Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 59
- 238000005507 spraying Methods 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 14
- 230000009977 dual effect Effects 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 239000010431 corundum Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- -1 polysiloxane Polymers 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 238000005488 sandblasting Methods 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 230000008021 deposition Effects 0.000 abstract description 7
- 229910000601 superalloy Inorganic materials 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 description 9
- 238000005461 lubrication Methods 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001120 nichrome Inorganic materials 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Abstract
The invention discloses a preparation method of a dual-phase nanoparticle reinforced alloy wear-resistant coating, which comprises the following steps of preparing raw materials for the wear-resistant coating; pouring the required raw materials into a ball mill tank for grinding; pouring the ground materials into a stirrer for stirring, uniformly mixing, and adding a binder in the stirring process for coating operation; adopting atmospheric plasma spraying to spray the stainless steel matrix; the inventive method of the invention obviously improves the wear resistance of the coating, reduces the friction coefficient and realizes the controllable deposition of the high-performance alloy wear-resistant coating.
Description
Technical Field
The invention belongs to the technical field of thermal spraying and surface engineering, and particularly relates to a preparation method of a dual-phase nanoparticle reinforced alloy wear-resistant coating.
Background
Atmospheric plasma spray technology is based on the generation and utilization of plasma. In this process, the gas is heated and ionized to form a plasma. The powder is then injected into a plasma and sprayed through a nozzle onto the surface of the workpiece to form a coating. Compared with other surface engineering technologies, the atmospheric plasma spraying generally has higher deposition efficiency and can quickly form uniform and compact coatings.
In the prior art, an alloy wear-resistant coating is often used in mechanical industrial equipment, and NiCr alloy is a representative metal material, and the wear-resistant coating has good high-temperature stability, so that the wear-resistant coating can keep relatively good performance in a high-temperature environment, the service life of the machinery can be greatly prolonged, and the wear-resistant coating is very important for application in the high-temperature industrial equipment. However, the performance of the coating still has a plurality of limitations, and the defects of thermal fatigue, deposition uniformity, hardness, adhesiveness and the like in practical application can cause the performance of the coating to be greatly limited, so that the coating is insufficient for being applied in some extreme abrasion environments, and the NiCr coating can show a certain surface roughness due to the influence of a preparation process. These limitations affect their tribological properties and their effectiveness in practical applications.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
The invention is provided in view of the above and/or problems existing in the prior art in the preparation of the alloy wear-resistant coating, the wear resistance of the coating is remarkably improved by using the inventive method in the invention, the friction coefficient is reduced, and the controllable deposition of the high-performance alloy wear-resistant coating is realized.
Therefore, the invention aims to overcome the defects in the prior art and provide a preparation method of a dual-phase nanoparticle reinforced alloy wear-resistant coating, which comprises the following steps,
Preparing raw materials for the wear-resistant coating;
Pouring the required raw materials into a ball mill tank for grinding;
Pouring the ground materials into a stirrer for stirring, uniformly mixing, and adding a binder in the stirring process for coating operation;
and adopting atmospheric plasma spraying to spray the stainless steel matrix.
As a preferred embodiment of the method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating, the method comprises the following steps: treating the stainless steel substrate before spraying, specifically, ultrasonically cleaning the surface of the stainless steel substrate by ethanol to remove impurities such as greasy dirt and the like, and putting the stainless steel substrate into an oven for drying after cleaning; then carrying out sand blasting coarsening treatment on the surface of the stainless steel to be sprayed by brown corundum sand with the granularity of 24 meshes, and controlling the coarsened particle roughness to be 2-8 mu m.
As a preferred embodiment of the method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating, the method comprises the following steps: the milling time was 2 hours.
As a preferred embodiment of the method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating, the method comprises the following steps: the raw materials are Mo powder, BN powder and Ni20Cr powder.
As a preferred embodiment of the method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating, the method comprises the following steps: the mass of the Mo powder and the BN powder is the same.
As a preferred embodiment of the method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating, the method comprises the following steps: the mass ratio of the Mo powder, the BN powder and the Ni20Cr powder is 1-15%, 1-15% and 70-98% respectively.
As a preferred embodiment of the method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating, the method comprises the following steps: the mass ratio of the Mo powder, the BN powder and the Ni20Cr powder is 10%, 10% and 80%, respectively.
As a preferred embodiment of the method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating, the method comprises the following steps: the parameters of the coating are that the current is 500A, the Ar gas flow is 35L/min, the H 2 flow is 6L/min, the powder feeding speed is 28-36 g/min, the spraying distance is 90-120 mm, the translation speed of the spraying gun is 200 mm/s, and the thickness of the coating is 300 mu m.
As a preferred embodiment of the method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating, the method comprises the following steps: in the Ni20Cr powder, the mass percentages of Ni and Cr are 80% and 20%, respectively.
As a preferred embodiment of the method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating, the method comprises the following steps: the adhesive is acrylic polysiloxane, and the mass ratio of the adhesive is 40% when stirring.
Compared with the prior art, the invention has the following beneficial effects: the solid lubricating film and the ceramic interface film are successfully formed on the stainless steel substrate by introducing the doped lubricating phase molybdenum and the enhanced phase boron nitride, the wear resistance of the coating is obviously improved by using the inventive method, the friction coefficient is reduced, and the controllable deposition of the high-performance alloy wear-resistant coating is realized; can be applied to the work of preparing the alloy wear-resistant coating.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic illustration of the present invention in a spray application.
FIG. 2 is a diagram showing the microstructure of the raw material in example 1.
FIG. 3 is a graph of the microscopic morphology of the coating prepared in example 1.
FIG. 4 is a graph showing the friction coefficient of Mo/BN-Ni20Cr at different ratios in examples 1 to 4.
FIG. 5 is a graph showing the friction coefficient of Mo/BN-Ni20Cr at different spray parameters in examples 5-9.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The preparation method of the biphase nanoparticle reinforced alloy wear-resistant coating comprises the following steps:
Preparing raw materials for the wear-resistant coating, wherein the raw materials are Mo powder, BN powder and Ni20Cr powder, the mass ratio of the Mo powder to the BN powder is 1-15%, the mass ratio of the BN powder to the Ni20Cr powder is 1-15% and the mass ratio of the BN powder to the Ni20Cr powder is 70-98%, and the mass ratio of Ni to Cr in the Ni20Cr powder is 80% and 20% respectively;
pouring the required raw materials into a ball mill tank for grinding for 2 hours;
Pouring the ground materials into a stirrer for stirring, adding a binder in the stirring process for coating operation, wherein the binder is acrylic polysiloxane, and the mass ratio of the binder in stirring is 40%;
and adopting atmospheric plasma spraying to spray the stainless steel matrix.
Treating the stainless steel substrate before spraying, specifically, ultrasonically cleaning the surface of the stainless steel substrate by ethanol to remove impurities such as greasy dirt and the like, and putting the stainless steel substrate into an oven for drying after cleaning; then carrying out sand blasting coarsening treatment on the surface of the stainless steel to be sprayed by brown corundum sand with the granularity of 24 meshes, and controlling the coarsened particle roughness to be 2-8 mu m.
When in spraying, the spraying gun is electrified (in the prior art, as shown in figure 1), the parameters of the coating are that the current is 500A, the Ar gas flow is 35L/min, the H 2 flow is 6L/min, the powder feeding rate is 28-36 g/min, the spraying distance is 90-120 mm, the translation speed of the spraying gun is 200 mm/s, and the thickness of the coating is 300 mu m.
Example 1
The embodiment provides a preparation method of a dual-phase nanoparticle reinforced alloy wear-resistant coating, which comprises the following steps:
(1) Preparing raw materials for the wear-resistant coating, wherein the raw materials are Mo powder, BN powder and Ni20Cr powder, the mass ratio of the Mo powder to the BN powder is 10%, 10% and 80%, and the mass ratio of the Ni20Cr powder to the BN powder is 80% and 20% respectively;
(2) Pouring the required raw materials into a ball mill tank for grinding for 2 hours;
Pouring the ground materials into a stirrer for stirring, adding a binder in the stirring process for coating operation, wherein the binder is acrylic polysiloxane, and the mass ratio of the binder in stirring is 40%;
(3) Treating a stainless steel substrate, namely ultrasonically cleaning the surface of the stainless steel substrate by using ethanol to remove impurities such as greasy dirt and the like, and putting the stainless steel substrate into an oven for drying treatment after cleaning; then carrying out sand blasting coarsening treatment on the surface of the stainless steel to be sprayed by brown corundum sand with the granularity of 24 meshes, and controlling the coarsened particle roughness to be 2-8 mu m;
(4) Generating plasma by adopting atmospheric plasma spraying under normal pressure, connecting the prepared metal powder into a powder container through a conveying pipe, wherein the current is 500A, the Ar gas flow is 35L/min, the H 2 flow is 6L/min, the powder feeding speed is 32 g/min, the spraying distance is 100mm, the translation speed of a spraying gun is 200 mm/s, and the composite alloy wear-resistant coating is deposited on the surface of a stainless steel substrate, so that the thickness of the coating is 300 mu m;
(5) And (5) naturally cooling after the preparation is finished.
The prepared coating is subjected to a ball-disc friction and wear experiment, and the experiment is simultaneously carried out under the same condition, wherein a dual ball is a Si 3N4 ball of 5mm, the relative sliding speed is 0.1 m/s, the wear radius is 5mm, and the sliding distance is 1000m.
The results show that under the non-lubrication condition, the friction coefficient of the prepared coating is 0.39+/-0.05, and the abrasion rate is 4.2+/-0.08 x 10 -6mm3/(N.m).
The microstructure of the raw materials (three powders mixed together) (shown in fig. 2) is that the main morphology is nano particles with the length of 50nm to 150 nm, the average particle diameter length of the nano particles is 110 nm, the thickness is about 25 nm, mo and BN are uniformly distributed on Ni20Cr as doping phases, the specific surface area is high, and the average pore size is 180 nm.
As can be seen from FIG. 3, the prepared coating has uniform thickness, average thickness of 300 μm, no obvious layering phenomenon and uniform distribution.
The invention realizes the controllable deposition of the high-performance alloy wear-resistant coating and the regulation and control of the organization structure and the mechanical property of the interface by the nanoscale lubricating phase Mo and the reinforcing phase BN reinforcing alloy coating and the specific setting of coating parameters so as to improve the abrasion condition of the friction interface.
Example 2
The present example provides a method for preparing a dual-phase nanoparticle reinforced alloy wear-resistant coating, which is different from example 1 in that the mass ratio of Mo powder in the raw material is 1% and the mass ratio of BN powder is 1%.
The prepared coating was subjected to a ball-disc friction wear test, and was simultaneously tested under the same conditions as in example 1, wherein a dual ball was selected from the group consisting of 5mm Si 3N4 balls, a relative sliding speed of 0.1m/s, a wear radius of 5mm, and a sliding distance of 1000m.
The results show that under the non-lubrication condition, the friction coefficient of the prepared coating is 0.57+/-0.05, and the abrasion rate is 1.6+/-0.09 x 10 -5mm3/(N.m).
Example 3
The present example provides a method for preparing a dual-phase nanoparticle reinforced alloy wear-resistant coating, which is different from example 1 in that the mass ratio of Mo powder in the raw material is 5% and the mass ratio of BN powder is 5%.
The prepared coating was subjected to a ball-disc friction wear test, and was simultaneously tested under the same conditions as in example 1, wherein a dual ball was selected from the group consisting of 5mm Si 3N4 balls, a relative sliding speed of 0.1m/s, a wear radius of 5mm, and a sliding distance of 1000m.
The results show that under the non-lubrication condition, the friction coefficient of the prepared coating is 0.49+/-0.03, and the abrasion rate is 1.3+/-0.15 x 10 -5mm3/(N.m).
Example 4
The present example provides a method for preparing a dual-phase nanoparticle reinforced alloy wear-resistant coating, which is different from example 1 in that the mass ratio of Mo powder in the raw material is 15% and the mass ratio of BN powder is 15%.
The prepared coating was subjected to a ball-disc friction wear test, and was simultaneously tested under the same conditions as in example 1, wherein a dual ball was selected from the group consisting of 5 mm Si3N4 balls, a relative sliding speed of 0.1 m/s, a wear radius of 5 mm, and a sliding distance of 1000 m.
The results show that under the non-lubrication condition, the friction coefficient of the prepared coating is 0.42+/-0.05, and the abrasion rate is 8.4+/-0.12 x 10 -6mm3/(N.m).
Example 5
The present embodiment provides a method for preparing a dual-phase nanoparticle reinforced alloy wear-resistant coating, which is different from embodiment 1 in that in step (4), the spraying distance is 90mm.
The prepared coating was subjected to a ball-disc friction wear test, and was simultaneously tested under the same conditions as in example 1, wherein a dual ball was selected from the group consisting of 5mm Si 3N4 balls, a relative sliding speed of 0.1m/s, a wear radius of 5mm, and a sliding distance of 1000m.
The results showed that the friction coefficient of the prepared coating was 0.54±0.06 and the wear rate was 6.4±0.09×10 -6mm3/(n·m) under non-lubricated conditions.
Example 6
The present embodiment provides a method for preparing a dual-phase nanoparticle reinforced alloy wear-resistant coating, which is different from embodiment 1 in that in step (4), the spraying distance is 110mm.
The prepared coating was subjected to a ball-disc friction wear test, and was simultaneously tested under the same conditions as in example 1, wherein a dual ball was selected from the group consisting of 5 mm Si3N4 balls, a relative sliding speed of 0.1 m/s, a wear radius of 5 mm, and a sliding distance of 1000 m.
The results show that under the non-lubrication condition, the friction coefficient of the prepared coating is 0.48+/-0.06, and the abrasion rate is 7.5+/-0.06 x 10 -6mm3/(N.m).
Example 7
The present embodiment provides a method for preparing a dual-phase nanoparticle reinforced alloy wear-resistant coating, which is different from embodiment 1 in that in step (4), the spraying distance is 120 mm.
The prepared coating was subjected to a ball-disc friction wear test, and was simultaneously tested under the same conditions as in example 1, wherein a dual ball was selected from the group consisting of 5mm Si 3N4 balls, a relative sliding speed of 0.1m/s, a wear radius of 5mm, and a sliding distance of 1000m.
The results show that under the non-lubrication condition, the friction coefficient of the prepared coating is 0.51+/-0.06, and the abrasion rate is 9.4+/-0.05 x 10 -6mm3/(N.m).
Example 8
The embodiment provides a preparation method of a dual-phase nanoparticle reinforced alloy wear-resistant coating, which is different from embodiment 1 in that in step (4), the powder feeding rate is 28g/min.
The prepared coating is subjected to a ball-disc friction and wear experiment, and is compared with example 1, and the experiment is simultaneously carried out under the same condition, wherein a dual ball is selected from Si3N4 balls of 5mm, the relative sliding speed is 0.1 m/s, the wear radius is 5mm, and the sliding distance is 1000 m.
The results show that under the non-lubrication condition, the friction coefficient of the prepared coating is 0.49+/-0.08, and the abrasion rate is 6.6+/-0.04 x 10 -6mm3/(N.m).
Example 9
The embodiment provides a preparation method of a dual-phase nanoparticle reinforced alloy wear-resistant coating, which is different from embodiment 1 in that in step (4), the powder feeding rate is 36 g/min.
The prepared coating was subjected to a ball-disc friction wear test, and was simultaneously tested under the same conditions as in example 1, wherein a dual ball was selected from the group consisting of 5mm Si 3N4 balls, a relative sliding speed of 0.1m/s, a wear radius of 5mm, and a sliding distance of 1000m.
The results showed that the friction coefficient of the prepared coating was 0.53±0.09 and the wear rate was 8.7±0.06×10 -6mm3/(n·m) under non-lubrication conditions.
It is obvious from the above examples that example 1 is the best mode, and the use of the present invention significantly improves the wear resistance of the alloy wear-resistant coating, reduces the friction coefficient, and realizes the controllable deposition of the high-performance alloy wear-resistant coating.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (10)
1. A preparation method of a biphase nanoparticle reinforced alloy wear-resistant coating is characterized by comprising the following steps of: comprises the steps of,
Preparing raw materials for the wear-resistant coating;
Pouring the required raw materials into a ball mill tank for grinding;
Pouring the ground materials into a stirrer for stirring, uniformly mixing, and adding a binder in the stirring process for coating operation;
and adopting atmospheric plasma spraying to spray the stainless steel matrix.
2. The method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating according to claim 1, wherein the method comprises the following steps: treating the stainless steel substrate before spraying, specifically, ultrasonically cleaning the surface of the stainless steel substrate by ethanol to remove impurities such as greasy dirt and the like, and putting the stainless steel substrate into an oven for drying after cleaning; then carrying out sand blasting coarsening treatment on the surface of the stainless steel to be sprayed by brown corundum sand with the granularity of 24 meshes, and controlling the coarsened particle roughness to be 2-8 mu m.
3. A method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating as claimed in claim 2, wherein: the milling time was 2 hours.
4. A method for preparing a dual phase nanoparticle reinforced alloy wear resistant coating as claimed in any one of claims 1 to 3, wherein: the raw materials are Mo powder, BN powder and Ni20Cr powder.
5. The method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating according to claim 4, wherein the method comprises the following steps: the mass of the Mo powder and the BN powder is the same.
6. The method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating according to claim 5, wherein the method comprises the following steps: the mass ratio of the Mo powder, the BN powder and the Ni20Cr powder is 1-15%, 1-15% and 70-98% respectively.
7. The method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating according to claim 6, wherein the method comprises the following steps: the mass ratio of the Mo powder, the BN powder and the Ni20Cr powder is 10%, 10% and 80%, respectively, the average grain size of the BN powder is 200 nm, and the grain size of the Ni20Cr powder is 45-85 mu m.
8. A method for preparing a dual phase nanoparticle reinforced alloy wear resistant coating as claimed in any one of claims 1 to 3, wherein: the parameters of the coating are that the current is 500A, the Ar gas flow is 35L/min, the H 2 flow is 6L/min, the powder feeding speed is 28-36 g/min, the spraying distance is 90-120 mm, the translation speed of the spraying gun is 200 mm/s, and the thickness of the coating is 300 mu m.
9. A method for preparing a dual phase nanoparticle reinforced alloy wear resistant coating as claimed in any one of claims 1 to 3, wherein: in the Ni20Cr powder, the mass percentages of Ni and Cr are 80% and 20%, respectively.
10. The method for preparing the dual-phase nanoparticle reinforced alloy wear-resistant coating according to claim 8, wherein the method comprises the following steps: the adhesive is acrylic polysiloxane, and the mass ratio of the adhesive is 40% when stirring.
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| 曹玉霞;黄传兵;杜令忠;张伟刚;兰叶;: "等离子喷涂NiCr/Cr_3C_2-hBN复合涂层的制备及摩擦性能研究", 表面技术, no. 06, 20 June 2015 (2015-06-20) * |
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