Experimental Parameter Effect on Ceramic Coating Film on LY12 Alloy by Micro-arc Oxidation

International Conference on Materials Sciences and Nanomaterials

材料科学;物理学

Zhao, H.^1 ; Yang, J.H.^1 ; Wang, X.H.^2

College of Materials Science and Engineering, Shenyang Ligong University, China^1

College of Materials Science and Engineering, Shenyang University of Technology, China^2

关键词: Ceramic coating films;    Different surface morphologies;    Experimental parameters;    Inner barrier layers;    LY12 aluminum alloy;    Microarc oxidation;    NaOH solutions;    Oxidation time;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/230/1/012012/pdf
DOI  :  10.1088/1757-899X/230/1/012012

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Ceramic coatings were fabricated on the surface of LY12 aluminum alloy by micro-arc oxidation (MAO) method in NaSiO3-NaOH solution. Effect of experimental parameter on the MAO film was investigated. The results show that the ceramic layers formed on the surface of the alloy show different surface morphologies, and thickness of MAO film increases with the increase of voltage and oxidation time. These films contain two layers, an outer porous layer and an inner barrier layer, which consists mainly of γ-Al2O3phase and a small amount of α-Al2O3phase.