Effect of plasma electrolytic oxidation on mould corrosion resistance of aluminum alloy

doi:10.13251/j.issn.0254-6051.2020.05.017

Abstract

Abstract: Plasma electrolytic oxidation (PEO) coatings were fabricated on the 2A12 aluminum alloy and mould corrosion resistance of the PEO coating was tested. SEM and XRD were employed to analyze the morphology, composition and phase component of the coatings. The results show that the mould growth behavior is observed on the surface of aluminum alloy under mould condition. Pitting corrosion occurs on the metal surface and the corrosion degree is grade I, while no mould growth behavior is observed on the PEO coating surface and the corrosion degree is grade 0. PEO treatment can improve the mould corrosion resistance of the aluminum alloy and expand their application.

Key words: aluminum alloy, plasma electrolytic oxidation, mould, corrosion resistance

CLC Number:

TQ174.453

Wang Xiaobo, Yang Guohua, Quan Fengmei, Fa Tao, Zhu Shengfa. Effect of plasma electrolytic oxidation on mould corrosion resistance of aluminum alloy[J]. Heat Treatment of Metals, 2020, 45(5): 90-96.

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