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首页> 外文会议>2006 BIMW >Structure and Properties of Microarc Oxidation Films on Zinc-containing Aluminum Alloy
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Structure and Properties of Microarc Oxidation Films on Zinc-containing Aluminum Alloy

机译：含锌铝合金微弧氧化膜的结构与性能

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The wear and corrosion protective films were synthesized on the LC4 Al-Zn-Mg-Cu alloy by microarc oxidation (MAO) technique in an alkali-silicate electrolyte. The microstructure and composition profiles were investigated by scanning electron microscopy and energy dispersive spectroscopy, and the phase structure was performed by X-ray diffraction. The corrosion resistance of coated LC4 alloy was evaluated using potentiodynamic polarization curves. The MAO film consists of γ-Al_2O_3, α-Al_2O_3 and amorphous SiO_2 phases. The film up to 210 μm contains two layers. The Si element from electrolyte enriched in the outer layer film. After microarc oxidation treatment, the microhardness and corrosion resistance of LC4 alloy were improved significantly.
机译：在碱金属硅酸盐电解质中，通过微弧氧化（MAO）技术在LC4 Al-Zn-Mg-Cu合金上合成了耐磨保护膜。通过扫描电子显微镜和能量色散光谱研究了显微组织和组成轮廓，并且通过X射线衍射进行了相结构。使用电位动力学极化曲线评估了涂覆的LC4合金的耐腐蚀性。 MAO膜由γ-Al_2O_3，α-Al_2O_3和非晶SiO_2相组成。高达210μm的薄膜包含两层。来自电解质的Si元素富集在外层膜中。经过微弧氧化处理后，LC4合金的显微硬度和耐蚀性得到了显着提高。

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