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

The corrosion behavior of Cu-Cr alloy in 3.5%NaCl+NH3 solution had been studied, and the influences of the concentration of NH3 on corrosion resistance discussed by means of Metallograph, XRD, SEM and electrochemical method. The results show that the Cu is easier to corrosion than Cr, and the corrosion rate increases with the increasing of the concentration of NH3, and deformation worsen the corrosion resistance of the alloy in such corrosive environment.

NH_3对CuZnAl合金在3.5%NaCl溶液中腐蚀行为的影响

通过对CuZnAl合金在3.5%NaCl和3.5%NaCI+NH3溶液中的腐蚀速率和电化学参数的测试及CuZnAl合金腐蚀形貌的观察,分析了NH3对CuZnAl合金在3.5%NaCl溶液中腐蚀行为的影响。结果表明:NH3能改变CuZnAl合金的腐蚀形貌,使合金的腐蚀电位负移,腐蚀电流增加,合金的腐蚀速率增大。

Cu-Cr合金在NaCl+NH_3溶液中腐蚀磨损行为

通过Cu Cr合金在3 5%NaCl+4 5mol/LNH3溶液中的腐蚀磨损速率,结合Cu Cr合金腐蚀磨损后的磨损形貌,探讨了其腐蚀磨损机制。结果表明:Cu Cr合金在腐蚀磨损过程中腐蚀与磨损交互作用、相互促进,其腐蚀磨损特征以切削为主,伴随腐蚀。

NH_3对CuBiAl合金在3.5%NaCl溶液中的腐蚀性能的影响

通过金相、X射线衍射(XRD)及扫描电镜(SEM/EDX),结合电化学测试手段研究了CuBiAl合金在3.5%NaCl+NH3溶液中的腐蚀行为,并探讨了NH3对CuBiAl合金在3.5%NaCl溶液中腐蚀性能的影响。结果表明:NH3能使合金的腐蚀电位负移,腐蚀电流增加,加速了合金的腐蚀,且合金的腐蚀速率随NH3浓度的增加而增大。