纯铝在0．6mol／LNaCl溶液中腐蚀行为的SECM分析  

Corrosion Study of Pure Aluminum in 0.6mol/L NaCl Solution by SECM

作　　者：周和荣[1,2] 马坚 李晓刚[2,3] 董超芳[2] 陆启凯 冯皓 

机构地区：[1]中国电器科学研究院工业产品环境适应性国家重点实验室,广州510663 [2]北京科技大学腐蚀与防护中心,100083 [3]北京市腐蚀磨蚀与表面技术重点实验室,100083

出　　处：《航空材料学报》2009年第2期8-12,共5页Journal of Aeronautical Materials

基　　金：国家自然科学基金重大资助项目(No.50499331);科技部科技基础条件平台建设项目(No.2005DTA10400)

摘　　要：采用扫描电化学显微镜(SECM)系统研究了1060纯铝在0.6mol/LNaC l溶液中的腐蚀行为,利用扫描电镜(SEM)观察了腐蚀产物的微观形貌,采用能谱分析了腐蚀产物的组成。结果表明,1060纯铝表面不同区域活性溶解程度不同,且试样表面的氧化电流峰分布呈条带状;腐蚀溶解主要发生在FeA lx相周围;试样表面的腐蚀产物数量较少、分布不均匀,腐蚀点主要呈圆环形。The corrosion behavior of aluminum alloy 1060 in 0. 6mol/LNaCl（5 mmol/L KI） solution was investigated by scanning electrochemical microscopy （SECM）. The surface morphology was observed by scanning electron microscope （SEM）. The corrosion products were analyzed by energy dispersive X-ray detector （EDX）. The result showed that the dissolution of aluminum alloy 1060 was different in different region of the surface. The distribution of the oxidation current peak on the surface of the sample was strip in form. The dissolution position mainly happened in the round of FeAlx. The corrosion products were not uniform and the amount was little. The corrosion spot was mainly round.

关 键 词：1060纯铝 活性溶解 扫描电化学显微镜 氧化电流 

分 类 号：TG172.3[金属学及工艺—金属表面处理]