铝青铜/Ti80合金/2205不锈钢在海水中电偶腐蚀行为研究  

Study on Galvanic Corrosion of Aluminum Bronze/Ti80 Alloy/2205 Stainless Steel in Seawater

作　　者：杨学东[1] 吴晓飞[1] 尹晓辉 刘雪琴 YANG Xuedong;WU Xiaofei;YIN Xiaohui;LIU Xueqin(Luoyang Ship Material Research Institute,Luoyang 471023 ,China;Marine Design & Research Institute of China,Shanghai 200011,China)

机构地区：[1]中国船舶重工集团公司第七二五研究所,河南洛阳471023 [2]中国船舶工业集团公司第七〇八研究所,上海200011

出　　处：《材料开发与应用》2019年第2期28-35,共8页Development and Application of Materials

基　　金：工信部高技术船舶科研计划(MK160702)

摘　　要：采用失重法和电化学方法研究了铝青铜、Ti80合金和2205不锈钢之间的双金属偶合及三金属偶合体系的电偶腐蚀行为,结果表明,Ti80在海水中的自腐蚀电位为正,耐蚀性好,2205不锈钢次之,铝青铜电位为负。海水全浸条件下,铝青铜分别与Ti80、2205不锈钢组成偶对体系时均作为阳极且腐蚀加速,腐蚀速率约为自腐蚀速率的2倍。对于铝青铜/Ti80/2205不锈钢复杂偶合体系,Ti80作为阴极腐蚀速率没有明显变化,2205不锈钢作为阴极腐蚀则有所减缓,铝青铜作为阳极腐蚀加快。当强阳极铝青铜面积相对减小时,Ti80合金腐蚀仍然没有明显变化,铝青铜腐蚀变快。The galvanic corrosion behaviors of albronze, Ti80 alloy and 2205 double-phase stainless steel were studied by loss weight and electrochemical methods. The results showed that the self-corrosion potential of Ti80 alloy was positive and that its anti-corrosion performance was good, with that of 2205 stainless steel followed, and that the self-corrosion potential of albronze was negative. In seawater, when albronze was coupled with Ti80 alloy or 2205 stainless steel, albronze was anode and its corrosion accelerated, and its corrosion rate was two times higher than that of self-corrosion. When albronze coupled with Ti80 alloy and 2205 stainless steel, the corrosion of albronze, the anode, accelerated, the corrosion rate of Ti80 alloy cathode was almost unchanged, and that of 2205 stainless steel, the anode, decreased. As the area of the anode albronze decreased, its corrosion accelerated, and the corrosion rate of Ti80 alloy still had no obvious change.

关 键 词：铝青铜 电偶腐蚀 复杂电偶 海水 

分 类 号：TG172.2[金属学及工艺—金属表面处理]