Cu对铬锰钢在Cl^-环境中腐蚀行为的影响  

Effect of copper on corrosion resistance of Cr-Mn stainless steel in Cl^- solution

作　　者：戴安伦[1] 张艳[1] 金云学[1] 辛伟[1] 

机构地区：[1]江苏科技大学材料科学与工程学院,江苏镇江212003

出　　处：《江苏科技大学学报（自然科学版）》2009年第6期504-508,共5页Journal of Jiangsu University of Science and Technology:Natural Science Edition

摘　　要：研究了Cu对铬锰钢在3.5%NaCl溶液中耐点蚀性的影响,通过优化合金成分来改善铬锰钢的耐蚀性能.用SEM,EDS等分析手段,对腐蚀表面形貌和成分进行宏观和微观分析,分析了铜对铬锰钢在Cl-环境中腐蚀行为的影响.结果表明:随着铜加入量的增加,Cu元素在蚀坑内富集,增强了表面膜的钝化能力,进而提高了该膜的电化学稳定性,从而改善了铬锰钢在3.5%NaCl溶液中的点蚀性能,Cu含量在1.5%时铬锰钢的耐点蚀性能最好.This paper focused on the effect of copper on the enhancement of corrosion resistance of Cr-Mn stainless steel in 3.5% NaCl. The main aim was to improve the corrosion resistance of Cr-Mn steel by alloys optimization methods. Characterization techniques such as Scanning Electron Microscopy （SEM） and Energy Disperse Spectroscopy （EDS） were employed to analyze the interface and phase compositon of simples. The result shows that with the addition of copper, Cu enriches within corrosion pits and improves the corrosion resistance of Cr-Mn steel in 3.5% NaCl solution. The pitting-resistance performance is good with 1.5% Cu content.

关 键 词：铬锰钢 氯化钠 耐点蚀性 腐蚀机理 铜 

分 类 号：TG113.23[金属学及工艺—物理冶金]