International Journal of Advances in Scientific Research and Engineering-IJASRE

Comparative Evaluation of Surface Treatment Effect of AZ91D Alloy Material

Article Category: Chemistry

DOI: 10.31695/IJASRE.2019.33213

Pages: 157-165

Author: Sung-Hyung Lee,Hitoshi Yashiro,Song-Zhu Kure-Chu

Abstract: Magnesium is chemically reactive, weakly corrosive, weakly abrasion resistant and heat resistant, so various surface treatments have been developed. Non-chromate, anodizing, and plasma anodizing were selected as the surface treatment methods, and a comparative study on surface components, oxide thickness, heat diffusivity, dielectric breakdown voltage, hardness, and corrosion resistance was conducted. More specifically, the thermal conductivity is best in the case of non-chromate, and the breakdown voltage and Vickers hardness are highest in the case of plasma anodization. In the salt spray test, the corrosion resistance rating number was 3.5, 7, and 9 for non-chromate, anodization and plasma anodization, respectively.

Keyword: AZ91D Mg alloy, Anodization, Plasma anodization, Non-chromate, Oxide layer

This work is licensed under a Creative Commons Attribution 4.0 (International) Licence. (CC BY-NC 4.0)
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