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A valsin wear-resistant coating with high hardness and low coefficient of friction

A low friction coefficient, wear-resistant coating technology, applied in coatings, metal material coating processes, layered products, etc., can solve problems such as cracks, reduce coating wear resistance, and reduce coating hardness, and achieve promotion The effect of mutual diffusion, dense coating and good wear resistance

Active Publication Date: 2017-02-01
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the addition of V will lead to a decrease in the hardness of the coating. The decrease in hardness will cause cracks in the coating due to deformation during the friction process, which will reduce the wear resistance of the coating.

Method used

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  • A valsin wear-resistant coating with high hardness and low coefficient of friction
  • A valsin wear-resistant coating with high hardness and low coefficient of friction
  • A valsin wear-resistant coating with high hardness and low coefficient of friction

Examples

Experimental program
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Effect test

Embodiment 1～9

[0049] (1) Select M2 stainless steel and Si sheets with a Rockwell hardness of 70 as the substrate of the VAlSiN wear-resistant coating;

[0050] (2) Before deposition, the substrate is pre-cleaned by chemical cleaning and plasma glow;

[0051] (3) Deposition of VAlSiN coating: In the vacuum chamber, the Si target is connected to the cathode of the DC power supply, and the vanadium-aluminum alloy target is connected to the cathode of the intermediate frequency pulse power supply. When the background vacuum is better than 2×10 -4 Pa, after the substrate temperature is maintained at 500°C, Ar gas and N 2 gas, and adjust the working pressure to 0.5Pa, and then adjust the deposition parameters as shown in Table 1, and perform reactive sputtering on the two targets to obtain the VAlSiN wear-resistant coating.

[0052] figure 1 (b) The SEM image of the VAlSiN wear-resistant coating prepared in Example 2. It can be seen that the particle size of the coating is small, there are no m...

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Abstract

The invention discloses a high-hardness and low-friction coefficient VAlSiN wear-resistant coating layer. Components of the coating layer are represented as VaAlbSicNd, wherein a plus b plus c plus d is 1, a plus b plus c is not smaller than 0.381 and not greater than 0.709, and a, b and c are all not 0; a, b, c and d are atom ratios; and the coating layer has a columnar crystal growth structure. When satisfying the hardness requirement (H greater than 30 GPa) in the use process, the coating layer has lower friction coefficient (u smaller than 0.5), and shows excellent wear resistance (wear rate smaller than 10-16 m3 / N.m). The coating layer is suitable for improving the wear resistance of article surfaces in the environment of high temperature, high speed and heavy load, and also can be used as a cutter coating layer for processing such alloys as titanium alloy and nickel alloy difficultly cut by a traditional cutter coating layer. The invention further discloses a preparation method of the VAlSiN wear-resistant coating layer.

Description

technical field [0001] The invention relates to the field of multi-component hard coatings, in particular to a VAlSiN wear-resistant coating with high hardness and low friction coefficient and a preparation method thereof. Background technique [0002] With the development of society, more and more substrate surfaces need the protection of hard wear-resistant coatings to improve their wear resistance and prolong their service life. TiN is the earliest application of binary hard coating, the hardness can reach more than 20GPa, it has good resistance to mechanical friction and abrasive wear, it is widely used in the surface protection coating of objects, but because of its poor high temperature oxidation resistance, This limits the use of the coating in high temperature environments (>500°C). Then people developed binary hard coating materials such as TiC, CrC, CrN, and ZrN. These hard coatings have their own characteristics, but their performance is relatively single, whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/34C23C14/06B32B9/04
Inventor 黄峰李朋李栋孟凡平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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