等离子束表面冶金涂层在海水中的电化学腐蚀行为研究  

Research on Electrochemical Corrosion Behaviors of Coating by DC-plasma Jet Surface Metallurgy in Seawater

作　　者：王斐斐 李惠琪[2] 刘爽 

机构地区：[1]国网山东省电力公司电力科学研究院,山东济南250002 [2]山东科技大学,山东青岛266510

出　　处：《热加工工艺》2017年第4期181-183,共3页Hot Working Technology

摘　　要：采用极化曲线法和交流阻抗法研究了等离子束表面冶金涂层在海水中的电化学腐蚀行为。结果表明,该涂层在海水中有较高的腐蚀电位和较低的腐蚀电流,腐蚀速度较慢。该涂层在海水中有钝化膜生成,阻抗值比1Cr18Ni9Ti不锈钢明显提高,表明其对基体起到了很好的保护作用,在海水中具有优良的耐蚀性。The electrochemical corrosion behaviors of coating by DC-plasma jet surface metallurgy in seawater were studied by polarization curves and electrochemical impedance spectroscopy（EIS）. The results show that the coating has higher corrosion potential and smaller corrosion current in seawater, and the corrosion rate is slow. Passivating film is generated in seawater on the surface of the coating. The resistance value of the coating is higher than that of 1Cr18Ni9Ti stainless steel,which indicates that the coating protects base well and has good corrosion resistance in seawater.

关 键 词：等离子束表面冶金 极化曲线 交流阻抗 电化学腐蚀 

分 类 号：TG174.4[金属学及工艺—金属表面处理]