阴／阳极电流密度对铝合金微弧氧化陶瓷膜特性的影响

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

Abstract

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

CLC Number:

TG174

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

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