吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (增刊1): 106-110.

• 论文 • 上一篇    下一篇

SiC纳米颗粒对6060型铝合金微弧氧化膜组织结构及耐蚀性能的影响

杨悦, 陈彬   

  1. 长春工业大学先进结构材料教育部重点实验室, 长春 130012
  • 收稿日期:2010-07-16 出版日期:2011-09-01 发布日期:2011-09-01
  • 作者简介:杨悦(1974 ),女,副教授.研究方向:轻质合金表面改性技术及理论.E-mail :yangyue@mail.ccut.edu.cn.
  • 基金资助:

    教育部科学技术研究重点项目(210051)

Effects of SiC nano-particles on microstructure and the corrosion resistance of micro-arc oxidation films produced on aluminium alloy

YANG Yue, CHEN Bin   

  1. College of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, China
  • Received:2010-07-16 Online:2011-09-01 Published:2011-09-01

摘要:

为提高铝合金表面微弧氧化膜的耐蚀性,通过向电解液中添加SiC纳米颗粒的方式,成功获得了含有SiC纳米颗粒的复合微弧氧化膜层。采用D-MAXⅡA型X射线衍射仪(XRD)、场发射扫描电镜(FESEM)和金相定量分析光学显微镜分别对陶瓷膜的相组成、微观组织结构及膜层厚度进行了检测分析;采用AutoLAB-PGSTAT302型电化学工作站对制备的微弧氧化膜进行极化曲线和交流阻抗谱的测定。结果表明:SiC颗粒在复合微弧氧化膜层中的含量随着氧化时间的增加而逐渐增加;添加SiC纳米颗粒后微弧氧化膜的厚度没有明显变化;与未添加SiC纳米颗粒的微弧氧化膜层相比,其耐蚀性明显提高。

关键词: 金属材料, 微弧氧化, 铝合金, 耐蚀性, SiC纳米颗粒

Abstract:

To improve the corrosion resistance of the ceramic coating fabricated by micro-arc oxidation on aluminium alloy,ceramic coatings embedded with SiC nano-particles at different oxidation time were produced by adding SiC nano-particles into electrolyte during MAO process.The morphology,phase composition and thickness of the coatings were investigated by Field Emission Scanning Electron Microscopy(FESEM) and X-ray diffraction(XRD).The thickness of the coatings was determined by Optical Microscope.Simultaneously,the corosion resistance properties of the composite coatings were evaluated by Electrochemical Working Station.The results show that the content of SiC particles increased with the increasing time,and the corrosion resistance of the ceramic coatings with SiC nano-particles was improved significantly compared to the ceramic coatings without SiC nano-particles.

Key words: metallic materials, micro-arc oxidation, aluminium alloy, corrosion resistance, SiC nano-particles

中图分类号: 

  • TG113


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