lectrochemical etching of AISI 316 stainless steel in sodium chloride s olutious: observation of tex

• 作 者: Naiming Lin Jiaojuan Zou Junwen Guo Qiang Liu Dali Li Zhen xia Wang Bin Tang
• 机 构: Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi,
• 出 处: 第十一届全国表面工程大会暨第八届全国青年表面工程学术会议
• 发表日期: 2016年4期
• 关键词: Electrochemical etching austenitic stainless steel surface texturing tribologica

　　AISI 316 stainless steels (316 SS) were electrochemical etched in sodium chloride solutions with various concentrations to form textured surfaces. The surface morphologies of the ground 316 SS and surface textured 316 SS were observed by scanning electron microscopy (SEM) and the three-dime nsion surface topographies as well as surface profiles were obtained by laser scanning confocal microsc ope (LSCM). Sliding friction tests of the ground 316 SS and electrochemical etched 316 SS were cond ucted in air and under grease lubrication. The results suggested formation of variable degrees of texture d surfaces on 316 SS after electrochemical etching in 10 wt. %, 15 wt. %, and 20 wt. % NaCl solutions. The electrochemical etching in 25 wt. % NaCl solution induced severe general corrosion with no partic ular formation of surface texture characteristic. The 15 wt. % and 20 wt. % NaCl solution etched 316 S S samples which had fully play the function and advantage of surface texture showed more promising t ribological performance reflecting by coefficients of friction, weight loss and wear morphologies.