Abstract

In the present study, the corrosion behavior and microstructure changes of copper sheets joined with martensitic stainless steel AISI 410 in the salt environment after the explosive welding process have been investigated. An explosive loading and explosive material thickness were considered as variables. In the investigation, potentiodynamic polarization tests, electrochemical impedance spectroscopy, and metallographic tests were used through optical microscopy and scanning electron microscopy. The results of dynamic potential polarization curves showed that the corrosion density decreased with increasing the explosive load and decreasing the concentration at the interface. The results of metallography indicate a wave-eddy of the interface due to an increase in the thickness of the explosive load. According to the polarization test, the corrosion density increased with increasing the stand-off distance and the explosive load; an increase in the energy of the interface resulted from increasing the stand-off distance and the explosive loading, which exacerbates corrosion.

中文翻译：

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纯铜与AISI 410马氏体不锈钢爆炸焊接异种接头的电化学研究

摘要

在本研究中，研究了在盐环境中爆炸焊接后，加入马氏体不锈钢AISI 410的铜板的腐蚀行为和显微组织变化。爆炸载荷和爆炸材料厚度被认为是变量。在研究中，通过光学显微镜和扫描电子显微镜使用了电位动力学极化测试，电化学阻抗谱和金相测试。动态电位极化曲线的结果表明，随着爆炸载荷的增加和界面浓度的降低，腐蚀密度降低。金相分析的结果表明，由于爆炸载荷的厚度增加，界面发生了涡流。根据极化测试，腐蚀密度随着远距离和爆炸载荷的增加而增加。界面距离的增加和爆炸载荷的增加导致界面能量的增加，加剧了腐蚀。