金属连接件大气腐蚀行为模拟仿真  

Simulation of Atmospheric Corrosion Behavior of Metal Connectors

作　　者：谭勇[1] 周彩元[1,2] 陈源 何建新[1,2] 张紫娟 TAN Yong;ZHOU Cai-yuan;CHEN Yuan;HE Jian-xin;ZHANG Zi-juan(Southwest Research Institute of Technology and Engineering,Chongqing,400039;The Natural Environmental Test and Research Center of Science,Technology and Industry for National Defense,Chongqing 400039)

机构地区：[1]西南技术工程研究所,重庆400039 [2]国防科技工业自然环境试验研究中心,重庆400039

出　　处：《环境技术》2018年第A01期50-54,共5页Environmental Technology

摘　　要：采用仿真手段开展2A12铝合金和TC4钛合金连接件腐蚀行为模拟计算。给定输入条件下,仿真结果显示2A12铝合金和TC4钛合金连接件高腐蚀电流密度区域主要分布在连接件两种金属偶接部位。电偶连接件仿真计算腐蚀倾向与实际部件腐蚀行为一致,最高电流密度达0.0003A/m2,腐蚀速率为1.23um/a。采用仿真手段开展连接件腐蚀行为模拟计算,可以快速评估连接件电偶腐蚀倾向,给出电偶腐蚀高风险分布区域,腐蚀电位分布、腐蚀电流密度分布和腐蚀速率等量化计算结果还有待进行进一步验证。The corrosion behavior simulation of 2A12 aluminum alloy and TC4 titanium alloy connectors was carried out by simulation method.Under given input conditions,the simulation results show that high corrosion current density region of 2A12 aluminum alloy and TC4 titanium alloy connectors is mainly distributed in coupling parts of these two kinds of metal.The corrosion tendency simulation of galvanic connector is accord with actual condition,the highest current density is 0.000 3 A/m2,and the corrosion rate is 1.23 um/a.By using simulation method to simulate corrosion behavior of connectors,the galvanic corrosion tendency of connectors can be quickly assessed,and the high risk areas of galvanic corrosion can be given.The quantitative calculation results of corrosion potential distribution,corrosion current density distribution and corrosion rate need to be further verified.

关 键 词：金属 连接件 大气 腐蚀行为 仿真 

分 类 号：TG172.3[金属学及工艺—金属表面处理]