变形铜合金在盐雾和二氧化硫环境中的耐蚀性研究  

Corrosion Behavior of Deformed Copper Alloy in SO_2 and NaCl Fog

作　　者：郑茂盛[1] 张雅妮[1] 訾进蕾[1] 孙胜英[1] 

机构地区：[1]西安交通大学材料科学与工程学院,陕西西安710049

出　　处：《材料保护》2007年第11期1-3,共3页Materials Protection

基　　金：国家高技术研究发展计划资助项目(2002AA331110)

摘　　要：采用扫描电镜和失重法对经过不同变形工艺处理的铜合金在二氧化硫和盐雾环境中的腐蚀行为进行了研究。结果表明:在盐雾环境中,铜合金的失重速度随时间的推移呈上升趋势,经过拉拔的冷轧样较未经过拉拔的冷轧样耐蚀性差。在二氧化硫腐蚀环境中,合金的失重速度随暴露时间的推移逐渐降低,经过拉拔的试样较未经过拉拔的试样有更好的耐蚀性。The service life of material has close relation with its corrosion resistance. Thus, the investigation on corrosion behavior is important for the better use of the material. The corrosion behavior of copper alloy deformed with different techniques in SO, and NaCl fog corrosion environment was investigated using SEM and weight - loss measurements. The results showed that the weight-loss rate of alloy increased with exposure lime in NaCl fog environment, and the cold worked sample specimen had higher corrosive rate than non - cold worked specimen. When exposure time was up to 12 days, the margin for weight -loss was 1.68 g/m2 which was between two kinds of specimens. In contrast, the weight-loss rate decreased with the exposure time in SO, corrosion environment, and the cold worked specimen sample had lower corrosion rate than non - cold worked one. In addition, when exposure time was up to 4 days, the margin for weight- loss was 3. 826 g/m2 which was between two kinds of samples.

关 键 词：变形铜合金 耐蚀性 变形工艺 产物膜 

分 类 号：TG174.3[金属学及工艺—金属表面处理]