铝合金微弧氧化陶瓷膜的组织与性能研究
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TB333

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浙江省大学生科技创新项目


Microstructure and Properties of Ceramic Coating by Microarc Oxidation on Aluminum Alloy
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ZheJiang Undergraduate Scientific and Technological Innovation Project

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    摘要:

    利用等离子体微弧氧化工艺在LY12合金表面制备了陶瓷膜,对陶瓷膜微观组织结构、力学性能进行了分析。结果表明,陶瓷膜具有内部致密层和外部疏松层两层结构,膜层与铝基体为冶金结合。陶瓷膜的硬度和弹性模量硬度和弹性模量最大可分别达到25GPa和300GPa,陶瓷膜经300℃-15℃热冲击循环40次无裂纹、无膜层脱落现象。黑色陶瓷膜与轴承钢在空气中的摩擦系数为0.25-0.37,表现出良好的耐磨性能。

    Abstract:

    The ceramic coatings on LY12 aluminum alloy were fabricated by applying plasma microarc oxidation technique. The microstructure and properties of the ceramic coatings were studied. The results show that the ceramic coating is composed of a two-layer structure with the surface loose zone and the inner compact zone. The maximum hardness and elastic modulus values of the ceramic coating were 25GPa and 300GPa respectively. After undergoes 40 times heat shock circulation from 300℃ to 15℃, neither cracks nor breaking-off was found. The friction coefficient of the black ceramic coating against bearing steel in air is in the range of 0.25-0.37, showing a good wear resistance.

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张汀,袁航,颜余仁,等. 铝合金微弧氧化陶瓷膜的组织与性能研究[J]. 科学技术与工程, 2011, (1): .
Zhang Ting,,,et al. Microstructure and Properties of Ceramic Coating by Microarc Oxidation on Aluminum Alloy[J]. Science Technology and Engineering,2011,(1).

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  • 收稿日期:2010-10-21
  • 最后修改日期:2010-10-21
  • 录用日期:2010-10-28
  • 在线发布日期: 2010-12-10
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