The corrosion of Al-supersaturated Mg matrix and the galvanic effect of secondary phase nanoparticles
By Wu, Peng-Peng; Song, Guang-Ling; Zhu, Yi-Xing; Feng, Zhen-Liang; Zheng, Da-Jiang
Published in Corrosion Science
2021
Abstract
A series of Al-supersaturated Mg alloys were fabricated by magnetron-sputtering and their corrosion behavior was investigated. The results showed that the supersaturated Al in the matrix facilitated the formation of a uniform and protective surface film and effectively suppressed the micro-galvanic corrosion. The secondary phase nano-particles smaller than a critical size did not have an evident deteriorating effect on the micro galvanic corrosion of the Al-supersaturated alloys.