阴／阳极电流密度对铝合金微弧氧化陶瓷膜特性的影响

阴／阳极电流密度对铝合金微弧氧化陶瓷膜特性的影响

吕宪义，金曾孙¹，吴汉华^1,2，龙北红³，汪剑波¹

1. 吉林大学超硬材料国家重点实验室，长春 130012； 2. 吉林大学物理学院，长春 130023；3. 吉林大学材料科学与工程学院，长春 130012

收稿日期:2004-06-11 修回日期:1900-01-01 出版日期:2005-01-26 发布日期:2005-01-20
通讯作者: 吴汉华

Effects of Cathodic/Anodic Current Density on Propertiesof MAO Coatings on Aluminium Alloy

Lü Xian-yi¹, JIN Zeng-sun¹, WU Han-hua^1,2, LONG Bei-hong³, WANG Jian-bo¹

1. State Key Laboratory for Superhard Materials, Jilin University, Changchun 130012, China; 2. College of Physics, Jilin University, Changchun 130023, China;3. College of Materials Science and Engineering, Jilin University, Changchun 130012, China

Received:2004-06-11 Revised:1900-01-01 Online:2005-01-26 Published:2005-01-20
Contact: WU Han-hua

摘要/Abstract

摘要： 采用微弧氧化技术在铝合金上合成了陶瓷膜，研究了阳极电流密度和阴／阳极电流密度比对陶瓷膜特性的影响. 结果表明，阳极电流密度对陶瓷膜中α-Al₂O₃比γ-Al²O³的相对含量影响很大，但阴／阳极电流密度比对其相对含量的影响较小，而陶瓷膜的显微硬度、微观结构和致密层的厚度与阳极电流密度和阴／阳极电流密度比密切相关.

关键词: 电流密度, 微弧氧化, 显微硬度, 相组成

Abstract: Ceramic coatings on aluminium alloy were prepared by means of microarc oxidation (MAO) technique, and the effects of anodic current density and the ratio of cathodic current (j_c) density to anodic current density (j_a) on the properties of the coatings were studied. The experimental results show that the content of α-Al₂O₃/γ-Al₂O₃ is closely relative to j_a but the effect of j_c/j_a on the phase con tent is unobvious. However, microhardness and microstructure as well as the density thickness of the coatings have something to do with j_a and j_c/j_a.

Key words: current density, microarc oxidation, microhardness, phase component

中图分类号:

TG174

吕宪义，金曾孙，吴汉华，龙北红，汪剑波. 阴／阳极电流密度对铝合金微弧氧化陶瓷膜特性的影响[J]. J4, 2005, 43(01): 64-67.

Lü Xian-yi, JIN Zeng-sun, WU Han-hua, LONG Bei-hong, WANG Jian-bo. Effects of Cathodic/Anodic Current Density on Propertiesof MAO Coatings on Aluminium Alloy[J]. J4, 2005, 43(01): 64-67.

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