海水环境中B10合金与高强钢的电偶腐蚀行为与电绝缘防护技术  

Galvanic Corrosion Behavior and Electric Insulation between B10 and a High Strength Steel in Seawater Environment for Warship

作　　者：雷冰[1] 胡胜楠[1] 卢云飞[1] 傅鑫[1] 郭倩 石鹏飞 LEI Bing;HU Shengnan;LU Yunfei;FU Xin;GUO Qian;SHI Pengfei(Wuhan Second Ship Design & Research Institute,Wuhan 430064,China)

机构地区：[1]武汉第二船舶设计研究所

出　　处：《腐蚀与防护》2019年第7期497-501,518,共6页Corrosion & Protection

摘　　要：B10合金与某高强钢是舰船海水系统的两种典型舰船结构材料,通过电化学测试考察了两种材料的电偶腐蚀倾向,通过模拟腐蚀试验研究了其在静态和动态海水中的电偶特性,通过串联不同阻值电阻的模拟电绝缘仿真计算,评估了两材料偶合的电绝缘判据。结果表明:B10合金与某高强钢在海水中有较强的的电偶腐蚀倾向,偶接后高强钢作为阳极,腐蚀加速;动态海水环境中电偶的腐蚀加速作用更加明显;仿真结果显示,B10合金与高强钢电偶对之间的绝缘电阻高于4kΩ时,可有效控制电偶腐蚀。B10copper alloy and a high-strength steel are two typical ship structural materials for s hip seawater systems.The galvanic corrosion tendency of the two materials was investigated by electrochemic al tests,the galvanic characteristics in static and dynamic seawater were studied by simulated corrosion tests,and t he electrical insulation simulation of the two materials was evaluated b y simulating the electrical insulation simulati on calculation using connecting resistors with different resistance values.The results show that B10alloy and the h igh-strength steel had strong galvanic corrosion tendency in seawater, after the two materials were connected,the high -strength steel acted as an anode and the corrosion was accelerated.T he corrosion acceleration of galvanic couples i n dynamic seawater environments was more pronounced.The simulation results show that the galvanic corrosion could be effectively controlled when the insulation resistance betwe en the B10alloy and the high-strength steel was higher than 4kΩ.

关 键 词：B10合金 高强钢 海水环境 电偶腐蚀 电绝缘 

分 类 号：TG174[金属学及工艺—金属表面处理]