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硫化铟对ZL108铝合金微弧氧化膜层结构和耐腐蚀性能的影响
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作者单位:

1.西南石油大学 材料科学与工程学院;2.西华大学 材料科学与工程学院;3.电子科技大学 物理学院

基金项目:

中国博士后科学基金资助项目(2019M663470)

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    摘要:

    在含有 In2S3的硅酸盐电解液中对ZL108 铝合金进行了微弧氧化处理。采用扫描电镜(SEM)、光学轮廓仪、X射线衍射(XRD)、X射线光电子能谱(XPS)和电化学工作站等检测手段,研究了添加In2S3对 MAO 膜层微观结构、相组成和耐蚀性等的影响。结果表明,In2S3的加入提高了微弧氧化电压,使膜层成膜速率增加,从而导致膜层厚度增加。在含有In2S3的电解液中形成的膜层致密性更好,膜层显微硬度提高,膜层的耐蚀性增强。膜层主要由α-Al2O3、γ-Al2O3和 SiO2 相组成。XPS检测结果表明In2S3在氧化过程中转变为In2O3。因此,添加In2S3优化了MAO膜层结构,提高了MAO膜层的综合性能。

    Abstract:

    Different micro-arc oxidation coatings were fabricated on ZL108 alloy in the silicate electrolyte without and with In2S3. Scanning electron mi-croscope (SEM), Optical Profiler, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and electrochemical workstation and so on were used to study the influence of In2S3 on the microstructure, phase composition, corrosion resistance,micro-hardness and thickness of the MAO coating. The results showed that the addition of In2S3 can increase the voltage of the MAO, promote the MAO coating formation rate and increase the coating thickness. The coating formed containing In2S3 was denser and the micro-hardness of the coating was increased. Therefore, the corrosion resistance of the coating with In2S3 was improved. The main phases of all the MAO coating were α-Al2O3, γ-Al2O3 and SiO2. The XPS result showed that In2O3 was formed on the coating surface. As a consequence, adding In2S3 can optimize the structure of the MAO coating and enhance its comprehensive properties.

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王平,胡杰,李瑞阳,龚泽宇,刘济威,熊丹,向东,魏晓伟,祖小涛.硫化铟对ZL108铝合金微弧氧化膜层结构和耐腐蚀性能的影响[J].稀有金属材料与工程,2021,50(1):56~62.[wang ping, Hu jie, Li Ruiyang, Gong Zeyu, Liu Jiwei, Xiong Dan, Xiang Dong, Wei Xiaowei, Zu Xiaotao. Effects of Indium sulfide on structure and corrosion resistance of the micro-arc oxidation coating on ZL108 alloy[J]. Rare Metal Materials and Engineering,2021,50(1):56~62.]
DOI:10.12442/j. issn.1002-185X.20191008

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  • 收稿日期:2019-11-29
  • 最后修改日期:2019-12-05
  • 录用日期:2019-12-10
  • 在线发布日期: 2021-02-05