铝合金牺牲阳极电流效率损耗的微观分析  

A MICROSCOPICAL ANALYSIS FOR CURRENT EFFICIENCY OF ALUMINUM ALLOY SACRIFICIAL ANODE

作　　者：廖海星[1] 齐公台[2] 喻克雄[1] 

机构地区：[1]荆州师范学院化学系,荆州434100 [2]华中科技大学化学系,武汉430074

出　　处：《腐蚀科学与防护技术》2004年第5期325-327,共3页Corrosion Science and Protection Technology

基　　金：湖北省科技厅重点攻关计划 ( 2 0 0 1-AA10 1C -4 6) ;湖北省教育厅科研计划青年基金 ( 2 0 0 1-B410 0 1)

摘　　要：采用电子探针 (EPMA)和能谱分析技术 (EDAX) ,考察了铝合金牺牲阳极的显微结构和腐蚀后的边缘形貌 ,讨论了电流效率和显微组织之间的关系 .结果表明The microstructure and cross sectional morphology of aluminum alloy anode after a simulated measurement of current efficiency in 3%NaCl for 336 h were examined by electron probe microanalysis (EPMA) and energy spectrum analysis.The current efficiency of the aluminum alloy anode was discussed in terms of its microstrutural characters.The results showed that the grain detachment due to interganular corrosion from the alloy matrix might be responsible to the loss of current efficiency.

关 键 词：铝合金牺牲阳极 晶界 显微组织 EDAX EPMA 能谱分析 晶粒 电流效率 腐蚀 形貌 

分 类 号：TQ153[化学工程—电化学工业] TG174[金属学及工艺—金属表面处理]