标题：Wear performance of electrohydrodynamically atomized WS2 coatings deposited on biomimetic shark-skin textured surfaces
作者：Li, Xuemu; Deng, Jianxin; Yue, Hongzhi; Ge, Dongliang; Zou, Xueqian
作者机构：[Li, Xuemu; Deng, Jianxin; Yue, Hongzhi; Ge, Dongliang; Zou, Xueqian] Shandong Univ, Key Lab High Efficiency & Clean Mech Mfg, Sch Mech Engn, MOE, Jin 更多
通讯作者地址：[Deng, JX]Shandong Univ, Key Lab High Efficiency & Clean Mech Mfg, Sch Mech Engn, MOE, Jinan 250061, Shandong, Peoples R China.
关键词：Al2O3/TiC ceramics; Biomimetic shark skin; WS2 coatings; dry friction; and wear properties
摘要：This paper aims to provide a method in improving tribological properties of Al2O3/TiC ceramics. Biomimetic shark skin was produced on Al2O3/TiC ceramic surfaces by laser surface texturing. Then WS2 coating was deposited on the biomimetic skin by electrohydrodynamic atomization and its dry friction behaviours and wear mechanisms were investigated. Results revealed that the synergy effect of biomimetic shark skin and WS2 coatings has an effective influence on the tribological properties of Al2O3/TiC ceramics. The friction coefficient reduced to similar to 0.3 and similar to 0.07 after texturing biomimetic shark skin and depositing WS2 coatings, which reduced by 29% and 84%, respectively, compared with those of only polished Al2O3/TiC ceramics. The contribution of biomimetic shark skin was primarily decreasing the friction surface, reducing shear stress and trapping wear debris. Moreover, the grooves acted as lubricant reservoir could keep a thicker trio-film and realize continuous lubrication for a longer friction time.