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A preparation method of diamond film coating layer bearing supporters

A technology of diamond film and supporter, which is applied in metal material coating process, coating, bearing components, etc., can solve the problems of easily scratched bearing surface, high consumption, short life, etc., achieve superior performance, suppress negative impact, The effect of excellent performance

Active Publication Date: 2009-03-04
SHANGHAI JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies and defects in the prior art, the present invention provides a method for preparing a diamond film-coated bearing supporter, which solves the problems of easy wear, short life, large consumption and easy Prominent problems such as scratches on the bearing surface

Method used

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Examples

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Embodiment Construction

[0013] Below in conjunction with YG6, YG8 cemented carbide as the bearing supporter base, the example of the bearing supporter of CVD diamond coating is prepared, the specific implementation of the present invention is further described:

[0014] 1. Soak with 10% dilute hydrochloric acid, and add 1% corrosion accelerator to remove the cobalt on the surface layer, and reduce the Co content in the surface layer of the substrate to less than 1%. Since cobalt has the function of catalyzing graphitization, the reduction of its content has obvious effects on promoting the nucleation and growth of diamond film and improving the adhesion between film and substrate. Then use diamond sandpaper and diamond mixed micropowder with a particle size of 1 μm and 5 μm to roughen the working surface of the bearing support to increase the nucleation density of diamond on the substrate and improve the adhesion between the diamond film and the substrate.

[0015] 2. Ar-H on the substrate surface in...

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Abstract

A process for preparing the bearing holder with coated diamond film layer includes such steps as removing Co from the surface of hard alloy substrate, roughing, decarbonizing, reducing, adding adhesion promoter to reacting gas, preparing the diamond film by CVD process while controlling its technological parameters by 3 stages to sequentially generate high-density layer, polycrystal layer and superfine micro crystal layer, and adhering said substrate onto the surface of steel holder.

Description

technical field [0001] The invention relates to a preparation method in the technical field of mechanical manufacturing, in particular to a preparation method of a diamond film-coated bearing supporter. Background technique [0002] Chemical vapor deposition (CVD) diamond film has excellent properties such as hardness very close to natural diamond, high elastic modulus, high thermal conductivity, good self-lubrication and chemical stability, etc., coated on the surface of cemented carbide bearing Diamond film coating can prolong the service life of traditional bearings, improve bearing production efficiency and improve the quality of bearing products. CVD diamond has great advantages over artificial polycrystalline diamond (PCD) materials in terms of wear resistance, friction coefficient, surface finish and other chemical stability indicators, and is a better wear-resistant material. CVD diamond-coated bearing supports are directly deposited diamond films on cemented carbid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C16/27F16C33/12
Inventor 孙方宏张志明沈荷生郭松寿陈明
Owner SHANGHAI JIAOTONG UNIV
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