METHOD FOR IMPROVING SURFACE ABRASION RESISTANCE OF ALUMINUM ALLOY UNDER DRY FRICTION CONDITION

WIPO Patent Application WO/2019/128210

A1

The present invention relates to a method for improving surface abrasion resistance of an aluminum alloy under a dry friction condition. The method comprises the following steps: 1) surface micro-texture; 2) preprocessing before anodic oxidation, comprising: a) ultrasonic cleaning, b) glue coating, c) alkali corrosion, d) washing, e) acid washing, f) washing, g) dedusting, and h) washing; 3) anodic oxidation; 4) ultrasonic deposition of a nano solid lubricant; 5) drying the aluminum alloy subjected to the ultrasonic deposition of the nano solid lubricant in step 4) in a drying oven to improve the adhesion strength of nano solid lubricant particles to a substrate. According to the present invention, the aluminum alloy surface is sequentially subjected to surface micro-texture machining, anodic oxidation preprocessing, anodic oxidation, and ultrasonic deposition of the nano solid lubricant, thereby cooperatively improving the surface corrosion resistance of the aluminum alloy. The method of the present invention is simple, and easy to implement; in addition, surface friction coefficients of the aluminum alloy are decreased, and the surface abrasion resistance of the aluminum alloy is improved.

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WANG BING (CN)
SONG QINGHUA (CN)
REN XIAOPING (CN)
WAN YI (CN)

PCT/CN2018/097265

July 04, 2019

July 26, 2018

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UNIV SHANDONG (CN)

C25D11/08; C10M169/04; C25D11/16; C25D11/24; C10N30/06; C10N30/08

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CN104480511A	2015-04-01
CN1698998A	2005-11-23
CN102011166A	2011-04-13

CHEN, LUANXIA ET AL.: "Enhancing Tribological Performance by Anodizing Micro-Textured Surfaces with Nano-MoS2 Coatings Prepared on Aluminum-Silicon Alloys", TRIBOLOGY INTERNATIONAL, vol. 122, June 2018 (2018-06-01), pages 85 - 87, XP055623327
RODRIGUES, S.P. ET AL.: "Water and Oil Wettability of Anodized 6016 Aluminum Alloy Surface", APPLIED SURFACE SCIENCE, vol. 422, 3 June 2017 (2017-06-03), pages 430 - 442, XP085170195

JINAN SHENGDA INTELLECTUAL PROPERTY AGENCY CO.,LTD (CN)

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