CN110643918A - Coating material for internal combustion engine cylinder, preparation method thereof and internal combustion engine cylinder - Google Patents
Coating material for internal combustion engine cylinder, preparation method thereof and internal combustion engine cylinder Download PDFInfo
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- CN110643918A CN110643918A CN201910994674.0A CN201910994674A CN110643918A CN 110643918 A CN110643918 A CN 110643918A CN 201910994674 A CN201910994674 A CN 201910994674A CN 110643918 A CN110643918 A CN 110643918A
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- iron
- coating material
- internal combustion
- combustion engine
- based alloy
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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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
Abstract
The invention discloses a coating material for an internal combustion engine cylinder, a preparation method thereof and the internal combustion engine cylinder, wherein the coating material for the internal combustion engine cylinder comprises the following components, by mass, 1% ~ 40% of molybdenum or aluminum oxide and the balance of iron-based alloy, wherein the mass percentage of the components is 100%.
Description
Technical Field
The invention relates to a 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 coating material for cylinders of internal combustion engines, which coating material forms surfaces with good corrosion resistance, excellent hardness and at the same time excellent friction properties, in particular in different temperature regions.
In order to solve the technical problems, the technical scheme of the invention is as follows: a coating material for a cylinder of an internal combustion engine comprises the following components in percentage by mass:
molybdenum or alumina: 1% -40%;
the balance being iron-based alloy, totaling 100%.
Further, the iron-based alloy comprises the following chemical components in percentage by mass:
Cr：8～13％；
B：0.5～4％；
Si：0.5～4％；
Mo：0～4％；
the balance being iron, totaling 100%.
Further, the coating material comprises the following components in percentage by mass:
molybdenum: 20 percent;
iron-based alloy: 80 percent.
Further, the coating material comprises the following components in percentage by mass:
alumina: 15 percent;
iron-based alloy: 85 percent.
The invention also provides an internal combustion engine cylinder with a spray coating made of the coating material.
The invention also provides a preparation method of the 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 coating material comprises the following components in percentage by mass:
alumina: 1% -40%;
the balance of iron-based alloy, which accounts for 100%;
the method comprises the following steps:
mixing the iron-based alloy powder and the alumina powder in percentage by mass 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 iron-based alloy and the aluminum oxide 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;
FIG. 2 is a micro-topography of a spray coating in a fourth example of the invention.
Detailed Description
The invention provides a 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 coating material 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 coating material for a cylinder of an internal combustion engine comprises the following components in percentage by mass:
molybdenum or alumina: 1% -40%;
the balance being iron-based alloy, totaling 100%.
Further, the iron-based alloy comprises the following chemical components in percentage by mass:
Cr：8～13％；
B：0.5～4％；
Si：0.5～4％；
Mo：0～4％；
the balance being iron, totaling 100%.
In a preferred embodiment of the invention, the components of the coating material and the mass percentages of the components are as follows:
molybdenum: 20 percent;
iron-based alloy: 80 percent.
In another preferred embodiment of the invention, the components of the coating material and the mass percentages of the components are as follows:
alumina: 15 percent;
iron-based alloy: 85 percent.
The invention also provides an internal combustion engine cylinder which is provided with the spray coating made of the coating material.
The invention also provides a preparation method of the coating material of 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 a preferred embodiment of the present invention, the coating material comprises the following components by mass percent:
alumina: 1% -40%;
the balance of iron-based alloy, which accounts for 100%;
the ball milling method is used for preparing the mixed powder of the iron-based alloy and the alumina, and the wet ball milling process is adopted to prepare the mixed powder because the flowability of the alumina powder is poor and the density of the alumina powder is greatly different from that of the iron-based powder.
The method comprises the following steps:
mixing the iron-based alloy powder and the alumina powder in percentage by mass 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 for 2 hours by using a planetary ball mill, and after ball milling, the powder is dried, ground and sieved to remove large particles, so as to obtain the final mixed powder of the iron-based alloy and the alumina.
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 coating material for a cylinder of an internal combustion engine comprises the following components in percentage by mass:
molybdenum: 20 percent;
iron-based alloy: 80 percent.
The iron-based alloy comprises the following chemical components in percentage by mass:
Cr：8％；
B：0.5％；
Si：0.5％；
the balance being iron, totaling 100%.
The composite material of the iron-based alloy and the molybdenum adopts a direct mechanical mixing method, iron-based powder and molybdenum powder are weighed according to the mass ratio and are put into a grinding tank to be mixed for 2 hours.
The prepared coating material 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, and the microscopic morphology of the formed spraying coating is shown in figure 1.
Example two
The coating material for the cylinder of the internal combustion engine and the preparation method thereof in the embodiment are basically the same as the first embodiment, except that: in the coating material for an internal combustion engine cylinder of the present embodiment, molybdenum: 30 percent; iron-based alloy: 70 percent.
The 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
The coating material for the cylinder of the internal combustion engine and the preparation method thereof in the embodiment are basically the same as the first embodiment, except that: in the coating material for an internal combustion engine cylinder of the present embodiment, molybdenum: 40 percent; iron-based alloy: 60 percent.
The 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 four
A coating material for a cylinder of an internal combustion engine comprises the following components in percentage by mass:
alumina: 15 percent;
iron-based alloy: 85 percent.
The iron-based alloy comprises the following chemical components in percentage by mass:
Cr：13％；
B：4％；
Si：4％；
Mo：4％；
the balance being iron, totaling 100%.
The ball milling method is used for preparing the mixed powder of the iron-based alloy and the alumina, and the wet ball milling process is adopted to prepare the mixed powder because the flowability of the alumina powder is poor and the density of the alumina powder is greatly different from that of the iron-based powder.
The method comprises the following steps:
the method comprises the steps of preparing mixed powder of iron-based alloy and alumina by a ball milling method, weighing and mixing the iron-based alloy powder and the alumina powder according to a mass ratio, putting the mixed powder and ball milling beads into a ball milling tank according to a 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 carrying out ball milling for 2 hours by using a planetary ball mill, drying the powder, grinding and sieving to remove large particles, thus obtaining the final mixed powder of the iron-based alloy and the alumina.
The prepared coating material 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, and the microscopic morphology of the formed spraying coating is shown in figure 2.
EXAMPLE five
The coating material for the cylinder of the internal combustion engine comprises the following components in percentage by mass:
alumina: 25 percent;
iron-based alloy: 75 percent.
Further, the iron-based alloy comprises the following chemical components in percentage by mass:
Cr：10％；
B：2％；
Si：2％；
Mo：2％；
the balance being iron, totaling 100%.
The preparation method of the coating material of this example is the same as that of example four.
The 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 six
The coating material for the cylinder of the internal combustion engine comprises the following components in percentage by mass:
alumina: 35 percent;
iron-based alloy: 65 percent.
Further, the iron-based alloy comprises the following chemical components in percentage by mass:
Cr：10％；
B：2％；
Si：2％；
Mo：2％；
the balance being iron, totaling 100%.
The preparation method of the coating material of this example is the same as that of example four.
The 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 the iron-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
The coating material for an internal combustion engine cylinder of this comparative example and the preparation method thereof were substantially the same as in example one except that: in the coating material for an internal combustion engine cylinder of the present comparative example, molybdenum: 50 percent; iron-based alloy: 50 percent.
The 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 No. three
The coating material for an internal combustion engine cylinder of this comparative example and the preparation method thereof are substantially the same as in example four, except that: in the coating material for an internal combustion engine cylinder of the present comparative example, the ratio of alumina: 45 percent; iron-based alloy: and 55 percent.
The 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 six and comparative examples one to three were subjected to porosity tests, and the results are shown in table one:
table one: porosity comparison table
As can be seen from the table I, the porosity of the iron-based alloy coating is very small because a proper amount of boron and silicon elements are doped in the iron-based 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. Al (Al)2O3And Mo can properly improve the porosity of the coating, and although pores in the coating are easy to cause cracking or falling off of the coating in frequent friction behaviors, the pores in the coating can 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 content of molybdenum or alumina exceeds 40%, the content of pores exceeds 8%, and the porosity is too high, which tends to cause peeling of the coating.
The spray coatings obtained in examples one to six and comparative examples one to three were subjected to hardness tests, and the results are shown in table two:
table two: microhardness comparison table for spray coating
As shown in the second table, the effect of doping the molybdenum metal and the alumina ceramic as the hard phase into the iron-based alloy is obvious. After 20% of metal Mo is doped into the iron-based alloy powder, the hardness of the coating is increased by 30.5%, and the hardness of the coating reaches 788.08 HV; doping 15% Al into iron-base alloy powder2O3The hardness of the coating is improved by 12.1% by the ceramic powder, and the hardness of the coating is 677.11 HV; the rest of the detailed data are seen in table two.
The spray coatings obtained in examples one to six and comparative examples one to three 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 third table, it can be known that the doping of the high-melting-point metal molybdenum and the alumina ceramic into the iron-based alloy can reduce the thermal stress generated during the preparation of the coating and improve the bonding strength of the coating. Compared with the Fe coating, the bonding strength of the Fe + 20% Mo coating is increased by 44.3%, and the Fe + 15% Al2O3The bonding strength of the coating is increased by 49.1% compared with that of the Fe coating. Adding Mo or Al with the content of not more than 40%2O3The bonding strength of the back coating exceeds 30MPa, and the requirement of being applied to the inner wall of the engine cylinder can be basically met. Mo and Al2O3When the content of (b) is more than 40%, the bonding strength of the coating is reduced mainly because the porosity of the coating is high and the bonding force is reduced.
The spray coatings obtained in examples one to six and comparative examples one to three 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
From the table four, it is known that the wear amount and wear rate of each coating layer, and the wear resistance is a comprehensive property of the hardness, toughness, miscibility, heat resistance, corrosion resistance, and the like of the material. When the microhardness of the coating is analyzed, the microhardness of the coating is increased by 30.5% when 20% of metal Mo is doped in the Fe alloy, and the wear rate of the coating is from 5.64 multiplied by 10 when the friction wear test is carried out-3mg·m-1Reduced to 4.78 × 10-3mg·m-1. Doping 15% Al in Fe-base alloy2O3After the ceramic, the microhardness of the coating is increased by 12.1 percent,the friction coefficient is reduced by 64.8 percent, the microhardness of the coating is increased, the friction coefficient is reduced, and the wear rate is reduced to 1.46 multiplied by 10-3mg·m-1. Mo or Al2O3When the content of (b) is more than 40%, the wear rate of the coating is increased mainly because of more pores and lower bonding strength.
In summary, the spray coatings prepared in the first to sixth embodiments of the present invention have good corrosion resistance, excellent hardness, and excellent friction properties especially 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 (8)
1. A coating material for a cylinder of an internal combustion engine is characterized by comprising the following components in percentage by mass:
1% of molybdenum or alumina ~ 40%;
the balance being iron-based alloy, totaling 100%.
2. The coating material for a cylinder of an internal combustion engine according to claim 1,
the iron-based alloy comprises the following chemical components in percentage by mass:
Cr：8～13 %；
B：0.5～4%；
Si：0.5～4%；
Mo： 0～4%；
the balance being iron, totaling 100%.
3. The coating material according to claim 1, characterized in that its components and the mass percentages of the components are as follows:
molybdenum: 20 percent;
iron-based alloy: 80 percent.
4. The coating material according to claim 1, characterized in that its components and the mass percentages of the components are as follows:
alumina: 15 percent;
iron-based alloy: 85 percent.
5. An internal combustion engine cylinder, characterized in that it has a sprayed coating made of the coating material according to any one of claims 1 to 4.
6. A method for producing a 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 of claim 6, wherein the coating material comprises the following components in percentage by mass:
1% of alumina ~ 40%;
the balance of iron-based alloy, which accounts for 100%;
the method comprises the following steps:
mixing the iron-based alloy powder and the alumina powder in percentage by mass 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 iron-based alloy and the aluminum oxide is obtained.
8. The production method according to claim 7,
the mass ratio of the mixed powder to the ball milling beads is 1: 1.5.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113549857A (en) * | 2021-07-21 | 2021-10-26 | 昆明理工大学 | Self-lubricating coating for inner wall of engine cylinder hole and preparation method thereof |
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| CN1572893A (en) * | 2003-05-26 | 2005-02-02 | 株式会社小松制作所 | Spray surface film sliding material, sliding part and sliding member and apparatus employing them |
| CN105648385A (en) * | 2016-01-15 | 2016-06-08 | 张家港清研再制造产业研究院有限公司 | Cylinder block hole high-velocity oxygen-fuel sprayed ion-based coating and manufacturing method thereof |
| CN106499539A (en) * | 2016-10-31 | 2017-03-15 | 中原内配集团股份有限公司 | A kind of low friction undercoating cylinder jacket and preparation method thereof |
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2019
- 2019-10-18 CN CN201910994674.0A patent/CN110643918A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1572893A (en) * | 2003-05-26 | 2005-02-02 | 株式会社小松制作所 | Spray surface film sliding material, sliding part and sliding member and apparatus employing them |
| CN105648385A (en) * | 2016-01-15 | 2016-06-08 | 张家港清研再制造产业研究院有限公司 | Cylinder block hole high-velocity oxygen-fuel sprayed ion-based coating and manufacturing method thereof |
| CN106499539A (en) * | 2016-10-31 | 2017-03-15 | 中原内配集团股份有限公司 | A kind of low friction undercoating cylinder jacket and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113549857A (en) * | 2021-07-21 | 2021-10-26 | 昆明理工大学 | Self-lubricating coating for inner wall of engine cylinder hole and preparation method thereof |
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