期刊
TRIBOLOGY INTERNATIONAL
卷 82, 期 -, 页码 305-310出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2014.07.017
关键词
Laser surface texturing; PTFE; Stainless steel; Friction and wear
资金
- National Natural Science Foundation of China [51101087, 50975145]
- Technical Innovation Project of Jiangsu Province [BC2012011]
- Natural Science Foundation of Jiangsu Province [2011BK708]
- China Postdoctoral Science Foundation [2013M540450]
Surface textures with dimples were fabricated on stainless steel surface by a Nd:YAG pulsed laser. Friction and wear behaviors were investigated by rubbing against PTFE under starved oil lubrication and the effect of dimple density from 2.0% to 20.9% was examined. The result shows that friction coefficient of stainless steel is reduced from 0.08 to 0.05 due to texturing, and the longevity of oil film is prolonged by 50%. The dimple density of 7.9-8.8% appears the optimal tribological performance with the friction coefficient of 0.055 and wear rate of 5.2 x 10(-7) mm(3)/N m. The beneficial effect of dimples is to act as oil reservoirs and the sink for capturing wear debris under starved lubrication. (C) 2014 Elsevier Ltd. All rights reserved.
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