CN110684941A - Nickel-based coating material for internal combustion engine cylinder, preparation method of nickel-based coating material and internal combustion engine cylinder - Google Patents
Nickel-based coating material for internal combustion engine cylinder, preparation method of nickel-based coating material and internal combustion engine cylinder Download PDFInfo
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- CN110684941A CN110684941A CN201910995823.5A CN201910995823A CN110684941A CN 110684941 A CN110684941 A CN 110684941A CN 201910995823 A CN201910995823 A CN 201910995823A CN 110684941 A CN110684941 A CN 110684941A
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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
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- 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
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
-
- 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
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating By Spraying Or Casting (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a nickel-based coating material for an internal combustion engine cylinder, a preparation method thereof and the internal combustion engine cylinder, wherein the nickel-based coating material for the internal combustion engine cylinder comprises the following components, by mass, 1% ~ 40% of molybdenum and the balance of nickel-based alloy, wherein the mass percentages of the components are 100%.
Description
Technical Field
The invention relates to a nickel-based coating material for an internal combustion engine cylinder, a preparation method thereof and the internal combustion engine cylinder.
Background
At present, with the improvement of awareness of energy conservation and emission reduction of people, the light weight of automobiles becomes one of important methods for paying attention to energy problems in the automobile industry. The aluminum alloy engine is used for replacing the original cast iron engine, so that the weight of the whole engine is reduced, the fuel consumption and the exhaust emission are reduced, but the problems that the mechanical strength and the wear resistance of an engine cylinder are not enough and the use requirement cannot be met are solved, and the problems can be solved by preparing a coating with high strength and excellent wear resistance by using a thermal spraying technology. The wear resistance of the engine cylinder sleeve is an important basis for measuring the running reliability and durability of an engine, the friction coefficient between a piston and a cylinder body is reduced, and the key factor for realizing the reliability of the engine and prolonging the service life of the engine is realized.
As a possible material for the running surface of the cylinder, it is previously known to use iron titanate (FeTiO)3) Also known as ilmenite. Ilmenite spray materials that form corrosion-resistant coatings by thermal spraying methods have been proposed in ukraine patent publication No. UA74987C 2. In international patent application No. WO2004/106711, the applicant proposed the use of ilmenite in part in combination with other cermet materials and/or oxides as a spray material for an engine cylinder running surface coating under overload. However, these coatings are not designed for increased friction requirements for high fluctuating temperature loads, but are primarily designed to improve the hardness and corrosion resistance of the coated surface. In chinese patent No. CN 102086499B, the applicant proposed a spray coating material containing ZnO solid lubricant, but the zinc material has a certain hazard to human body and environment.
Disclosure of Invention
The object of the invention is to overcome the disadvantages of the prior art and to provide a nickel-based coating material for cylinders of internal combustion engines, which provides a surface with good corrosion resistance, excellent hardness and, in particular, excellent frictional properties in different temperature ranges.
In order to solve the technical problems, the technical scheme of the invention is as follows: a nickel-based coating material for an internal combustion engine cylinder comprises the following components in percentage by mass:
molybdenum: 1% -40%;
the balance being nickel-based alloy, totaling 100%.
Further, the nickel-based alloy comprises the following chemical components in percentage by mass:
Cr：8～13％；
B：0.5～4％；
Si：0.5～4％；
Fe：5～15％；
the balance was N i, totaling 100%.
Further, the nickel-based coating material comprises the following components in percentage by mass:
molybdenum: 20 percent;
nickel-based alloy: 80 percent.
Further, the nickel-based coating material comprises the following components in percentage by mass:
molybdenum: 30 percent;
nickel-based alloy: 70 percent.
The invention also provides an internal combustion engine cylinder which is provided with the spray coating made of the nickel-based coating material.
The invention also provides a preparation method of the nickel-based coating material for the cylinder of the internal combustion engine, which comprises the following steps:
mixing the components in percentage by mass, and then carrying out ball milling or grinding.
Further, the method comprises the following steps:
weighing nickel-based alloy powder and molybdenum powder according to the mass percent, and putting the nickel-based alloy powder and the molybdenum powder into a grinding tank for mixing and grinding.
Further, the method comprises the following steps:
weighing nickel-based alloy powder and molybdenum powder according to the mass percentages and mixing to obtain mixed powder;
putting the mixed powder and the ball milling beads into a ball milling tank according to the mass ratio, adding a proper amount of absolute ethyl alcohol into the ball milling tank, and stirring the mixed powder to be thick;
and then ball milling is carried out, the powder is dried, ground and sieved to remove large particles after ball milling, and the final mixed powder of the nickel-based alloy and the molybdenum is obtained.
Further, the mass ratio of the mixed powder to the ball milling beads was 1: 1.5.
After the technical scheme is adopted, the spraying material is used on the running surface of the cylinder, the spraying material can be prepared into a powder form or a spraying wire or flux-cored wire form, the material can be preferably sprayed by a thermal spraying method or a plasma spraying method, and the novel spraying material is used for generating a thermal spraying coating which has excellent friction property particularly in different temperature areas and is particularly suitable for the running surface of the cylinder of an internal combustion engine. The surface layer formed with the spray material has sufficient corrosion resistance and excellent hardness, and the spray layer is also easily machined by honing or the like.
Drawings
FIG. 1 is a micro-topography of a spray coating in a first embodiment of the present invention.
Detailed Description
The invention provides a nickel-based coating material for an internal combustion engine cylinder, a preparation method thereof and the internal combustion engine cylinder, and a person skilled in the art can realize the purpose by properly improving process parameters by referring to the content. It is expressly intended that all such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the scope of the invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and modifications in the methods and applications described herein, as well as other suitable variations and combinations, may be made to implement and use the techniques of this invention without departing from the spirit and scope of the invention.
A nickel-based coating material for an internal combustion engine cylinder comprises the following components in percentage by mass:
molybdenum: 1% -40%;
the balance being nickel-based alloy, totaling 100%.
In one preferred embodiment of the present invention, the nickel-based alloy comprises the following chemical components by mass percent:
Cr：8～13％；
B：0.5～4％；
Si：0.5～4％；
Fe：5～15％；
the balance was N i, totaling 100%.
In one preferred embodiment of the invention, the components and mass percentages of the nickel-based coating material are as follows:
molybdenum: 20 percent;
nickel-based alloy: 80 percent.
In one preferred embodiment of the invention, the components and mass percentages of the nickel-based coating material are as follows:
molybdenum: 30 percent;
nickel-based alloy: 70 percent.
The embodiment of the invention also provides the cylinder of the internal combustion engine, which is provided with the spray coating made of the nickel-based coating material.
The embodiment of the invention also provides a preparation method of the nickel-based coating material for the cylinder of the internal combustion engine, which comprises the following steps:
mixing the components in percentage by mass, and then carrying out ball milling or grinding.
In one preferred embodiment of the present invention, the method comprises the following steps:
weighing nickel-based alloy powder and molybdenum powder according to the mass percent, and putting the nickel-based alloy powder and the molybdenum powder into a grinding tank for mixing and grinding.
In one preferred embodiment of the present invention, the method comprises the following steps:
weighing nickel-based alloy powder and molybdenum powder according to the mass percentages and mixing to obtain mixed powder;
putting the mixed powder and the ball milling beads into a ball milling tank according to the mass ratio, adding a proper amount of absolute ethyl alcohol into the ball milling tank, and stirring the mixed powder to be thick;
and then ball milling is carried out, the powder is dried, ground and sieved to remove large particles after ball milling, and the final mixed powder of the nickel-based alloy and the molybdenum is obtained.
Further, the mass ratio of the mixed powder to the ball milling beads was 1: 1.5.
The spray material of the invention is used for the running surface of the cylinder, the spray material can be made into a powder form or a spray wire or a flux-cored wire form, the material can be preferably used for producing a thermal spray coating by a thermal spray method or a plasma spray method, and the novel spray material is used for producing the thermal spray coating which has excellent friction properties particularly in different temperature areas and is particularly suitable for the running surface of the cylinder of an internal combustion engine. The surface layer formed with the spray material has sufficient corrosion resistance and excellent hardness, and the spray layer is also easily machined by honing or the like.
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Example one
A nickel-based coating material for an internal combustion engine cylinder comprises the following components in percentage by mass:
molybdenum: 20 percent;
nickel-based alloy: 80 percent.
The nickel-based alloy comprises the following chemical components in percentage by mass:
Cr：10％；
B：2％；
Si：2％；
Fe：10％；
the balance was N i, totaling 100%.
The nickel-based alloy powder and the molybdenum powder are weighed according to the mass ratio by adopting a direct mechanical mixing method and are put into a grinding tank to be mixed for 2 hours.
The nickel-based coating material prepared by the method is coated on the moving surface of the cylinder of the internal combustion engine by a thermal spraying method or a plasma spraying method, and the microscopic morphology of the formed spraying coating is shown in figure 1.
Example two
A nickel-based coating material for an internal combustion engine cylinder comprises the following components in percentage by mass:
molybdenum: 30 percent;
nickel-based alloy: 70 percent.
The nickel-based alloy comprises the following chemical components in percentage by mass:
Cr：13％；
B：4％；
Si：4％；
Fe：15％；
the balance was N i, totaling 100%.
The nickel-base alloy and molybdenum mixed powder is prepared by a ball milling method. Firstly weighing nickel-based alloy powder and molybdenum powder according to a mass ratio, mixing, then putting the mixed powder and ball-milled beads into a ball-milling tank according to the mass ratio of 1:1.5, adding a proper amount of absolute ethyl alcohol into the ball-milling tank to stir the powder to be thick, finally using a planetary ball mill to ball-mill for 2 hours, drying the powder, grinding, sieving and removing large particles to obtain the final mixed powder of the nickel-based alloy and the molybdenum.
The nickel-based coating material prepared by the method is coated on the moving surface of the cylinder of the internal combustion engine by adopting a thermal spraying method or a plasma spraying method to form a spraying coating.
EXAMPLE III
A nickel-based coating material for an internal combustion engine cylinder comprises the following components in percentage by mass:
molybdenum: 40 percent;
nickel-based alloy: 60 percent.
The chemical components and mass percentages of the nickel-based alloy and the preparation method of the nickel-based coating material are the same as those of the first embodiment.
The nickel-based coating material prepared by the method is coated on the moving surface of the cylinder of the internal combustion engine by adopting a thermal spraying method or a plasma spraying method to form a spraying coating.
Comparative example 1
The comparative example totally adopts nickel-based alloy as the component of the coating material to be sprayed on the surface of the cylinder of the internal combustion engine, so as to obtain the sprayed coating.
Comparative example No. two
A nickel-based coating material for an internal combustion engine cylinder comprises the following components in percentage by mass:
molybdenum: 50 percent;
nickel-based alloy: 50 percent.
The chemical components and the mass percentage of the nickel-based alloy and the preparation method of the nickel-based coating material are the same as those of the embodiment.
The nickel-based coating material prepared by the method is coated on the moving surface of the cylinder of the internal combustion engine by adopting a thermal spraying method or a plasma spraying method to form a spraying coating.
The spray coatings obtained in examples one to three and comparative examples one to two were subjected to porosity tests, and the results are shown in table one:
table one: porosity comparison table
| Porosity (%) | Comparative example 1 | Example one | Example two | EXAMPLE III | Comparative example No. two |
| Sample 1 | 3.917 | 7.134 | 7.130 | 6.971 | 7.767 |
| Sample 2 | 4.838 | 6.188 | 7.412 | 7.874 | 8.576 |
| Sample 3 | 5.216 | 6.598 | 6.848 | 7.189 | 8.810 |
| Average (%) | 4.657 | 6.640 | 7.130 | 7.345 | 8.384 |
As can be seen from the table I, the porosity of the nickel-based alloy coating is very low because a proper amount of boron and silicon elements are doped in the Ni alloy, and the boron and silicon elements can form low-melting-point eutectic with iron and nickel, so that the melting points of the boron and silicon elements are obviously reduced, the solid-liquid phase temperature range of the alloy is expanded, the alloy has good fluidity and good wettability on the surface of a matrix in the melting process, and the porosity of the obtained coating is relatively low. Mo increases the porosity of the coating layer appropriately. Although the pores in the coating are easy to cause cracking or peeling of the coating in frequent friction behaviors, the pores in the coating also play a good role in improving the friction and wear performance of the coating. Since the pores in the coating layer can serve to store lubricating oil during the friction process, it is very advantageous to reduce the friction coefficient of the coating layer. Meanwhile, the holes can also temporarily store abrasive dust generated in the friction process, so that secondary scratch caused by abrasive wear due to the abrasive dust is avoided, and the friction and wear resistance of the coating is improved. However, when the Ni content exceeds 50%, the content of pores exceeds 8%, and the porosity is too high, which tends to cause peeling of the coating layer.
The spray coatings obtained in examples one to three and comparative examples one to two were subjected to hardness tests, and the results are shown in table two:
table two: microhardness comparison table for spray coating
| Spray coating material | Mean value/HV |
| Comparative example 1 | 569.73 |
| Example one | 732.31 |
| Example two | 740.78 |
| EXAMPLE III | 712.50 |
| Comparative example No. two | 747.34 |
As shown in Table II, the effect of doping the molybdenum metal as the hard phase into the nickel-chromium-boron-silicon alloy is obvious. After the nickel-based alloy powder is doped with metal Mo with different contents, the hardness of the coating is increased, the Ni + 20% Mo coating is increased by 30.5% compared with the Ni alloy, the hardness of the coating reaches 732.3HV, and the rest detailed data are shown in the table II.
The spray coatings obtained in examples one to three and comparative examples one to two were subjected to the bonding strength test, and the results are shown in table three:
table three: bonding strength comparison table of spray coating
From the table III, the doping of the high-melting-point metal molybdenum into the nickel-based alloy can reduce the thermal stress generated during the preparation of the coating, improve the bonding strength of the coating, and increase the bonding strength of the Ni45+ 20% Mo coating by 74.8% compared with the Ni45 coating. The bonding strength of Ni + 20%, MoNi + 30% and MoNi + 40% Mo coatings exceeds 20MPa, and the requirements of application to the inner wall of an engine cylinder can be basically met. The Ni + 50% Mo coating has low bonding strength mainly because the porosity of the coating is high and the bonding force is reduced.
The spray coatings obtained in examples one to three and comparative examples one to two were subjected to wear performance tests, and the results are shown in table four:
table four: abrasion loss and abrasion rate of each coating are compared with each other
The wear amount and wear rate of each coating layer can be seen from table four. The wear resistance is the comprehensive properties of hardness, toughness, intersolubility, heat resistance, corrosion resistance and the like of the material. When the microhardness of the coating is analyzed, the microhardness of the coating is respectively increased by 28.5% when 20% of metal Mo is doped in the Ni alloy, and correspondingly, when a friction wear test is carried out, the friction coefficient is reduced by 13.7%, and the wear rate of the coating is from 8.16 multiplied by 10-3mg·m-1Reduced to 5.24 × 10-3mg·m-1And the reduction is 35.8 percent. The wear rate of the Ni + 50% Mo coating is increased mainly due to its more pores and lower bond strength.
In summary, the spray coatings prepared in the first to third embodiments have good corrosion resistance, excellent hardness, and excellent friction properties particularly in different temperature regions.
The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A nickel-based coating material for an internal combustion engine cylinder is characterized by comprising the following components in percentage by mass:
1% of molybdenum ~ 40%;
the balance being nickel-based alloy, totaling 100%.
2. The nickel-based coating material for a cylinder of an internal combustion engine according to claim 1,
the nickel-based alloy comprises the following chemical components in percentage by mass:
Cr：8～13 %；
B：0.5～4%；
Si：0.5～4%；
Fe：5～15%；
the balance was N i, totaling 100%.
3. The nickel-based coating material for a cylinder of an internal combustion engine according to claim 1, characterized in that its composition and the mass percentages of the components are as follows:
molybdenum: 20 percent;
nickel-based alloy: 80 percent.
4. The nickel-based coating material for a cylinder of an internal combustion engine according to claim 1, characterized in that its composition and the mass percentages of the components are as follows:
molybdenum: 30 percent;
nickel-based alloy: 70 percent.
5. A cylinder for an internal combustion engine, characterized in that,
having a spray coating of a nickel-based coating material according to any one of claims 1 to 4.
6. A method for producing a nickel-based coating material for a cylinder of an internal combustion engine according to any one of claims 1 to 4, characterized in that the steps of the method comprise:
mixing the components in percentage by mass, and then carrying out ball milling or grinding.
7. The preparation method according to claim 6, characterized in that the method comprises the following steps:
weighing nickel-based alloy powder and molybdenum powder according to the mass percent, and putting the nickel-based alloy powder and the molybdenum powder into a grinding tank for mixing and grinding.
8. The preparation method according to claim 6, characterized in that the method comprises the following steps:
weighing nickel-based alloy powder and molybdenum powder according to the mass percentages and mixing to obtain mixed powder;
putting the mixed powder and the ball milling beads into a ball milling tank according to the mass ratio, adding a proper amount of absolute ethyl alcohol into the ball milling tank, and stirring the mixed powder to be thick;
and then ball milling is carried out, the powder is dried, ground and sieved to remove large particles after ball milling, and the final mixed powder of the nickel-based alloy and the molybdenum is obtained.
9. The method according to claim 8,
the mass ratio of the mixed powder to the ball milling beads is 1: 1.5.
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| CN201910995823.5A CN110684941A (en) | 2019-10-18 | 2019-10-18 | Nickel-based coating material for internal combustion engine cylinder, preparation method of nickel-based coating material and internal combustion engine cylinder |
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Citations (5)
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| CN102644045A (en) * | 2012-04-28 | 2012-08-22 | 中国人民解放军装甲兵工程学院 | Cored wire of high-speed electric arc spraying nickel-base amorphous nanocrystalline antifriction coating |
| CN103710660A (en) * | 2013-12-24 | 2014-04-09 | 中国人民解放军装甲兵工程学院 | Method for size restoring and reinforcing of outer wall and inner wall of water-cooling cylinder sleeve of engine |
| CN107385364A (en) * | 2017-06-30 | 2017-11-24 | 潘海龙 | A kind of amorphous coating powder used for hot spraying |
| CN110004392A (en) * | 2019-03-21 | 2019-07-12 | 珠海弘德表面技术有限公司 | A kind of anti abrasive amorphous state thermal spraying material of high-temperature corrosion resistance |
| CN110306095A (en) * | 2019-07-09 | 2019-10-08 | 扬州安泰威合金硬面科技有限公司 | A kind of coating Co-based alloy powder and preparation method thereof |
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2019
- 2019-10-18 CN CN201910995823.5A patent/CN110684941A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644045A (en) * | 2012-04-28 | 2012-08-22 | 中国人民解放军装甲兵工程学院 | Cored wire of high-speed electric arc spraying nickel-base amorphous nanocrystalline antifriction coating |
| CN103710660A (en) * | 2013-12-24 | 2014-04-09 | 中国人民解放军装甲兵工程学院 | Method for size restoring and reinforcing of outer wall and inner wall of water-cooling cylinder sleeve of engine |
| CN107385364A (en) * | 2017-06-30 | 2017-11-24 | 潘海龙 | A kind of amorphous coating powder used for hot spraying |
| CN110004392A (en) * | 2019-03-21 | 2019-07-12 | 珠海弘德表面技术有限公司 | A kind of anti abrasive amorphous state thermal spraying material of high-temperature corrosion resistance |
| CN110306095A (en) * | 2019-07-09 | 2019-10-08 | 扬州安泰威合金硬面科技有限公司 | A kind of coating Co-based alloy powder and preparation method thereof |
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Application publication date: 20200114 |