轨道交通车辆用TC4钛合金的电偶腐蚀性能研究  

Galvanic Corrosion Properties of TC4 Titanium Alloy in Rail Transit Vehicle

作　　者：刘晓 张克木 罗金 朱宗涛[2] 刘瑞琳 LIU Xiao;ZHANG Kemu;LUO Jin;ZHU Zongtao;LIU Ruilin(Engineering Technology Center,CRRC Changchun Railway Vehicles Co.,Ltd.,130062,Changchun,China;不详)

机构地区：[1]中车长春轨道客车股份有限公司工程技术中心,长春130062 [2]西南交通大学材料科学与工程学院

出　　处：《城市轨道交通研究》2023年第4期9-11,16,共4页Urban Mass Transit

摘　　要：通过电偶腐蚀试验,测试了TC4钛合金同碳钢及铝合金所组成电偶对的电流密度,研究了钛合金与异种金属间的电偶腐蚀性能。试验结果表明:TC4钛合金同碳钢及铝合金直接接触时,容易发生严重的电偶腐蚀;涂环氧底漆或涂覆装配膏的处理方法能有效降低异种金属间的电偶腐蚀。Through galvanic corrosion tests,the current density of the galvanic pair formed by TC4 titanium alloy,carbon steel and aluminum alloy is measured,and the galvanic corrosion properties between TC4 titanium alloy and dissimilar metals are studied.Test results show that serious galvanic corrosion is prone to occur when TC4 titanium alloy is in direct contact with carbon steel and aluminum alloy.The galvanic corrosion between dissimilar metals can be effectively reduced by applying epoxy primer or assembly paste.

关 键 词：轨道交通车辆 钛合金 电偶腐蚀性能 

分 类 号：U270.41[机械工程—车辆工程]