交流电流与间歇性通电对铜铝复合板腐蚀行为的影响  

Effects of AC Current and Intermittent Current on Corrosion Behavior of Copper-aluminum Composite Plate

作　　者：程禹霖 黄宏军[1] 左晓姣[1] 袁晓光[1] 张艺凡 Cheng Yulin;Huang Hongjun;Zuo Xiaojiao;Yuan Xiaoguang;Zhang Yifan(School of Materials Science and Engineering,Shenyang University of Technology)

机构地区：[1]沈阳工业大学材料科学与工程学院,沈阳110870

出　　处：《特种铸造及有色合金》2021年第3期317-320,共4页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(U52001216);河南省联合基金(U1604251)。

摘　　要：研究了铜铝复合材料在质量分数为5%的NaCl中性盐雾中进行间歇性通电时的加速腐蚀过程,通过失重分析法、SEM、EDS、XRD以及电化学检测法分析了铜铝复合板的腐蚀机制与电流影响机制。结果表明,铜铝复合板界面处发生电偶腐蚀倾向比远离界面处铝基体更严重,在0~50A范围内,电流对复合板起到加速腐蚀作用,电流越大,加速作用越明显。相比于全程通电的试样,在25A电流下作用48h内,间歇性通电的试样腐蚀更严重。5%concentration neutral salt spray accelerated corrosion experiments were carried out on copper aluminum composite plate in intermittent energized state.The corrosion mechanism and current influence mechanism of composite plate were analyzed by weight loss analysis,SEM,EDS,XRD and electrochemical detection.The results indicate that the galvanic corrosion tendency at the interface of copper-aluminum composite plate presents more serious than that of aluminum matrix far away from the interface.In 0~50 A,the current can accelerate the corrosion,and the higher the current is,the more significant the acceleration is.The intermittently energized specimens are corroded more severely than the entirely energized ones under 25 Acurrent within 48 h.

关 键 词：腐蚀 铜铝复合板 交流电流 间歇性通电 

分 类 号：TB331[一般工业技术—材料科学与工程] TG146.11[金属学及工艺—金属材料]