Cu-Cr合金在3.5%NaCl+NH_3溶液中的腐蚀行为

Corrosion Behavior of Cu-Cr Alloy in 3.5 %NaCl+NH_3 Solution

通过金相、X射线衍射及扫描电镜 (SEM /EDX) ,结合电化学测试手段 ,研究了Cu Cr合金在 3 5 %NaCl +NH3 溶液中的腐蚀行为 ,并探讨了NH3 浓度对其腐蚀性能的影响。结果表明 :Cu Cr合金中铜相较铬相易腐蚀 ,其腐蚀速率随NH3 浓度的增加而增大。

The corrosion behavior of Cu-Cr alloy in 3 5 %NaCl+NH 3 solution was studied, and the influences of NH 3 content on corrosion property were discussed by means of metallograph,XRD,SEM/EDX and electrochemical method. The results showed that Cu is easier subject to corrosion than Cr, and the corrosion rate increases with the increasing of NH 3 content.