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Abrasion resisting workpiece and surface treatment method thereof

A surface treatment and workpiece technology, applied in metal material coating process, vacuum evaporation plating, coating, etc., can solve the problem of large difference in hardness between tungsten buffer layer and DLC layer, DLC layer peeling, DLC layer and tungsten buffer layer can be Decreased associativity, etc.

Inactive Publication Date: 2019-09-13
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology

[0004] However, some wear-resistant workpieces have higher requirements on the hardness of the DLC layer, which makes the hardness difference between the tungsten buffer layer and the DLC layer larger, resulting in a decrease in the bondability of the DLC layer and the tungsten buffer layer, resulting in a greater wear-resistant workpiece. The DLC layer is prone to peeling off under stress

Method used

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  • Abrasion resisting workpiece and surface treatment method thereof
  • Abrasion resisting workpiece and surface treatment method thereof

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Embodiment Construction

[0022] Embodiment of wear-resistant workpiece and surface treatment method thereof:

[0023] Carbon has a variety of forms, such as graphite in layered structure and diamond in network structure. Among them, there are SP2 bonds between carbon atoms in graphite, and SP3 bonds between carbon atoms in diamond. Diamond-like carbon coating (Diamond-likecarbon , DLC) is a substance composed of carbon elements, which is similar in nature to diamond, and has the structure of graphite atoms.

[0024] DLC has both SP2 and SP3 bonds. The higher the content of SP3 bonds in DLC, the higher the hardness of DLC, and the closer the properties of DLC are to diamond; on the contrary, the lower the content of SP3 bonds in DLC, the lower the hardness of DLC. The properties are closer to graphite.

[0025] There are many types of anti-friction workpieces, and the anti-friction workpiece of the present invention can be any parts subject to friction. The friction workpiece of this embodiment is an ...

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Abstract

The invention relates to the field of workpiece surface modification. An abrasion resisting workpiece comprises a base body. A tungsten buffering layer, a first DLC layer and a second DLC layer are sequentially deposited on the surface of the base body, and the SP3 key content of the first DLC layer is smaller than that of the second DLC layer. On one hand, by adoption of the first DLC layer, therisk of peeling of the second DLC layer can be better reduced; and on the other hand, the first DLC layer and the second DLC layer are made of carbon simple substance materials, so that the first DLClayer and the second DLC layer have better bondability, good attachment of the second DLC layer is better facilitated, and the risk of peeling of the second DLC layer is better reduced. In addition, the first DLC layer has high hardness and good friction resisting performance, even the second DLC layer peels, the first DLC layer is exposed, and excessive influences on pipe processing are avoided;and the friction resisting performance of the abrasion resisting workpiece cannot be obviously changed, reliability of the abrasion resisting workpiece is further better improved, and good surface performance of the abrasion resisting workpiece is further better guaranteed.

Description

technical field [0001] The invention relates to the field of surface modification of workpieces, in particular to a wear-resistant workpiece and a surface treatment method thereof. Background technique [0002] Diamond-like carbon (DLC) is a substance composed of carbon elements, similar in nature to diamond, and has a graphite atomic structure. Due to the high hardness and high elastic modulus of the DLC layer, low friction Factor, wear resistance and good vacuum tribological properties, it is very suitable as a wear-resistant coating. [0003] The surface of the existing wear-resistant workpiece is primed with a tungsten (chemical formula W) buffer layer and a diamond-like coating (DLC layer) is deposited on the basis of the tungsten buffer layer. The setting of the tungsten buffer layer is conducive to better adhesion of the DLC layer and It is beneficial to reduce the possibility of peeling of the DLC layer and improve the friction resistance of wear-resistant workpiece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/02C23C14/16C23C14/35C23C16/02C23C16/26C23C16/513
CPCC23C14/35C23C14/165C23C16/26C23C16/513C23C16/0281C23C14/0605C23C14/025
Inventor 张行倪雪辉何正林黄起建陈龙龙
Owner GREE ELECTRIC APPLIANCES INC
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