Effect of temperature on electrochemical corrosion of Zn-30Sn lead-free solder
Electrochemical measurements were employed to study the effect of temperature on the electrochemical corrosion of Zn-30Sn in neutral 0.5 M NaCl solution.The corrosion products were characterized by SEM and EDXA.OCP and potentiodynamic polarization results indicate that the increased temperature would negatively shift OCP and Ecorr values of Zn-30Sn,increase the icorr from 6.76 μA/cm2 to 24.97 μA/cm2,deteriorate the corrosion resistance thermodynamically and kinetically.EIS result also illustrates that increasing the temperature will decrease the total resistance value.Microstructure observations demonstrate that the surface corrosion layer with higher temperature forms a more coarse plate-like microstructure,providing less protection to the substrate.
Lead-free solder electrochemical corrosion temperature effect corrosion rate
Zhenghong Wang Zelin Yang Shenbo Zeng Gong Zhang Jianchun Liu Chuantong Chen Katsuaki Suganuma
Department of Mechanical Engineering Tsinghua University,Beijing 100084,China China ship development and design center,Wuhan,430064,China Institute of Scientific and Industrial Research Osaka University,Mihogaoka 8-1,Ibaraki,Osaka 567-004
国际会议
上海
英文
10-14
2018-08-08（万方平台首次上网日期，不代表论文的发表时间）