阅读说明：本技术 用于内燃机气缸的镍基涂层材料及其制备方法和内燃机气缸 (Nickel-based coating material for internal combustion engine cylinder, preparation method of nickel-based coating material and internal combustion engine cylinder ) 是由 薛卫昌 赵晓兵 陈煌 刘洋 于 2019-10-18 设计创作，主要内容包括：本发明公开了一种用于内燃机气缸的镍基涂层材料及其制备方法和内燃机气缸,用于内燃机气缸的镍基涂层材料的组分及各组分质量百分比如下：钼：1%~40%；余量为镍基合金,总计100%。用此涂层材料形成的表面具有很好的耐腐蚀性能、极佳的硬度和特别在不同温度区域同时具有极佳的摩擦性质。(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%.)

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.

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.