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Self-lubricated composite plating in multiple layers and preparation method

A multi-layer composite and composite coating technology, applied in the direction of coating, metal material coating process, superimposed layer plating, etc., can solve the problems of easy adhesion, reduce friction performance, etc., and achieve difficult effect and reduce internal stress. , The effect of improving the interface bonding strength

Inactive Publication Date: 2008-02-27
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] As traditional solid lubricants or antifriction components, layered transition metal sulfides (such as 2H-MoS 2 ) Due to the chemical activity of the unsaturated dangling bonds at the edge of the crystal, it is easy to adhere to the metal surface and be oxidized during the friction process in humid air and oxygen-rich environment, which drastically reduces its friction performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0012] MoS with ordinary layered structure 2 Powder, pure S powder and metal Mo flakes are the basic raw materials. layered MoS 2 The powder and pure S powder were mixed at a mass ratio of 4:1, and high-energy ball milled for 120 hours under the protection of argon to produce amorphous MoS with an average particle size of 90 nm. 3 powder. Amorphous MoS made by mechanical alloying 3 The powder is cold-pressed into a target with a thickness of 6mm, and the metal Mo sheet is machined to make a Mo target. Multilayer Mo / IF-MoS prepared by magnetron sputtering and multi-arc ion plating with repeated cross sputtering 2 Composite coating. Firstly, a 30nm-thick metallic Mo layer was sputtered and deposited on the Ti alloy substrate by magnetron sputtering. The temperature on the Ti alloy substrate was maintained at 200°C, the sputtering bias was 150V, and the vacuum degree in the reaction chamber was 1.2×10 -3 Pa, Ar gas with a pressure of 1 Pa was introduced during the magnetron...

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Abstract

A self-lubricating multi-layer coated layer is composed of several Mo layers and several IF-MoS2 layers, which are alternatively prepared. Its preparing process includes providing laminar MoS2 powder, S powder and Mo sheets and alternative magnetically controlled sputterings and multi-arc ionic platings. Its advantages are high stability, low friction coefficient, high antiwear nature and high adhesion.

Description

technical field [0001] The invention relates to a self-lubricating multilayer slip composite coating and a preparation method thereof. Background technique [0002] As traditional solid lubricants or antifriction components, layered transition metal sulfides (such as 2H-MoS 2 ) due to the chemical activity of the unsaturated dangling bonds at the edge of the crystal, it is easy to bond to the metal surface and be oxidized during the friction process in humid air and oxygen-rich environment, which drastically reduces its friction performance. This type of solid lubricant will undergo a significant change in the coefficient of friction during the transition from a high vacuum environment to a humid atmosphere, and a harsh temperature cycle between low temperature and normal temperature, such as the layered structure of 2H-MoS 2 The friction coefficient of the coating is 0.02-0.05 in vacuum, but it will increase sharply to 0.20-0.40 in humid air (relative humidity 50-80%). Si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C23C14/35C23C30/00
Inventor 涂江平张俐丽何丹农余震杨友志
Owner ZHEJIANG UNIV