摩擦腐蚀
原电池
材料科学
电化学
腐蚀
联轴节(管道)
电偶腐蚀
冶金
开路电压
化学
电极
电压
电气工程
工程类
物理化学
作者
Alex Correia Vieira,L. A. Rocha,Nikolaos S. Papageorgiou,S. Mischler
标识
DOI:10.1016/j.corsci.2011.08.041
摘要
Tribocorrosion of Al–Si–Cu–Mg alloys was investigated in 0.05 M NaCl and 0.1 M NaNO3 solutions under severe sliding and controlled electrochemical conditions. A simple galvanic coupling model was developed to analyze and quantitatively predict the evolution of the open circuit potential during tribocorrosion. According to this model and the obtained results, galvanic coupling was established in the NaNO3 solution within the wear track between passive and mechanically depassivated areas. In the NaCl solution, galvanic coupling was established between the whole depassivated wear track and the surrounding area. This difference was attributed to different mechanical properties of the passive surfaces.
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