The corrosion of Al-supersaturated Mg matrix and the galvanic effect of secondary phase nanoparticles

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.

Automated summary

Research on Al-supersaturated Mg alloys found that the presence of supersaturated Al helps in forming a protective surface and effectively suppresses micro-galvanic corrosion, while secondary phase nano-particles do not have a significant deteriorating effect on corrosion.