Tribological Behavior of Al-30%Al2O3-WS2 Coating Fabricated by Low Pressure Cold Spray Technology
作者
单位
1 State Key Laboratory of Marine Coatings、Marine Chemical Research Institute Co.、Ltd.、Qingdao 266071、China 2 Technology on Marine Corrosion and Protection Laboratory、Luoyang Ship Materials Research Institute、Qingdao 266237、China Science and Technology on 3 School of Materials Science and Engineering、China University of Petroleum (East China)、Qingdao 266580、China
关键词
收录来源
International Corrosion Congress · 第22届国际腐蚀大会
摘要
To improve the wear resistance of Al coating, Al -Al2O3-WS2 composite coatings were fabricated by Low pressure co ld spray (LPCS) technology onto Q235 carbon steel. The effects of WS 2 addition on the tribological behavior of Al -30 vol%Al2O3-WS2 coating with different WS2 contents(mass fraction: 0.5%, 1%, 2%, 5%) were studied by tribological measurements and microstruc tural analysis. The wear mechanism of the composite coating under different conditions was elucidated. The wear mechanism of the composite coating under different conditions was elucidated. Under the dry friction, the wear weight loss of the coating is sho wn to decrease with the increasing content of WS2 condition; the optimal amount of WS2 is 5wt%, the wear loss of the coating is 200% lower than that of the Al -30%Al2O3 coating. The wear mechanism of the coating mainly includes the lubrication of WS 2 and the oxidation-adhesive wear and abrasive wear. Under the seawater conditions, the wear volume of coatings with different amount of WS 2 decreases with the increase of WS 2 content, which indicates that the increase of WS 2 content improves the wear resistance of the coating. The wear mechanism of the coating is mainly consists of WS 2 lubrication, corrosion wear caused by adhesive wear and a small amount of abrasive wear.