文档介绍：第 41 卷第 5 期中南大学学报(自然科学版) Vo l .4 1
2010 年 10 月 Journal of Central South University (Science and Technology) Oct. 2010

铝合金表面特性与微弧氧化膜层生长过程的相关性

杨巍,蒋百灵,时惠英,鲜林云

(西安理工大学材料科学与工程学院,陕西西安,710048)

摘要:利用扫描电镜(SEM)、X 线光电子能谱仪(XPS)和 IM6e 电化学工作站等分析手段,探讨沉积层阻抗与微
弧氧化膜层生长过程的相关性。研究结果表明:溶质离子参与沉积层的形成,并使其物质组成、微观结构以及阻
抗产生较大差异,进而影响起弧时间和起弧电压;起弧后陶瓷层生长将依赖于基体铝向氧化铝的转变而使样品表
面阻抗增大,有微量溶质离子被动参与成膜;铝合金表面预制备膜在起始阶段即增加样品的绝缘性,其种类和阻
抗对微弧氧化起弧和生长过程影响均较小。
关键词:铝合金;微弧氧化;沉积层;阻抗;预制备膜
中图分类号:TG174 文献标志码:A 文章编号:1672−7207(2010)05−1767−07

Dependence of surface feature of aluminium alloy on
growth process of microarc oxidation coating

YANG Wei, JIANG Bai-ling, SHI Hui-ying, XIAN Lin-yun

(School of Material Science and Engineering, Xi’an University of Technology, Xi’an 710048, China)

Abstract: The relevance of the impedance of deposited-layer and ceramic coating growth was discussed by using SEM,
XPS and IM6e electrochemical workstation. The results show that solute ions are participated in forming the
deposited-layer, and position, microstructure and impedance of this layer are different, which results in a
difference of arc striking time and voltage during microarc oxidation (MAO). After arc striking occurring, the increase of
the impedance of the sample is dependent on Al substrate changed into alumina, and a small amount of solute ions is
participa