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微弧氧化对7050铝合金腐蚀行为的影响

庄俊杰 张晓燕 孙斌 宋仁国 李海

庄俊杰, 张晓燕, 孙斌, 宋仁国, 李海. 微弧氧化对7050铝合金腐蚀行为的影响[J]. 工程科学学报, 2017, 39(10): 1532-1539. doi: 10.13374/j.issn2095-9389.2017.10.011
引用本文: 庄俊杰, 张晓燕, 孙斌, 宋仁国, 李海. 微弧氧化对7050铝合金腐蚀行为的影响[J]. 工程科学学报, 2017, 39(10): 1532-1539. doi: 10.13374/j.issn2095-9389.2017.10.011
ZHUANG Jun-jie, ZHANG Xiao-yan, SUN Bin, SONG Ren-guo, LI Hai. Microarc oxidation coatings and corrosion behavior of 7050 aluminum alloy[J]. Chinese Journal of Engineering, 2017, 39(10): 1532-1539. doi: 10.13374/j.issn2095-9389.2017.10.011
Citation: ZHUANG Jun-jie, ZHANG Xiao-yan, SUN Bin, SONG Ren-guo, LI Hai. Microarc oxidation coatings and corrosion behavior of 7050 aluminum alloy[J]. Chinese Journal of Engineering, 2017, 39(10): 1532-1539. doi: 10.13374/j.issn2095-9389.2017.10.011

微弧氧化对7050铝合金腐蚀行为的影响

doi: 10.13374/j.issn2095-9389.2017.10.011
基金项目: 

国家自然科学基金资助项目(51371039)

详细信息
  • 中图分类号: TG171

Microarc oxidation coatings and corrosion behavior of 7050 aluminum alloy

  • 摘要: 采用微弧氧化(MAO)技术在7050铝合金表面制备了陶瓷膜层,运用扫描电子显微镜(SEM)和能谱分析仪(EDS)表征陶瓷膜微观结构,采用动电位极化曲线、电化学阻抗谱(EIS)和慢应变速率拉伸试验(SSRT)研究了微弧氧化膜对7050铝合金在3.5%(质量分数) NaCl水溶液中腐蚀和应力腐蚀开裂(SCC)行为的影响.结果表明:微弧氧化膜层由表面疏松层与内部致密层组成,表面疏松层主要由Al2O3组成,内部致密层由氧化铝与铝烧结而成.微弧氧化膜层可以有效抑制7050铝合金表面的腐蚀萌生及明显降低腐蚀速率,且使7050铝合金的应力腐蚀敏感性出现显著下降.
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出版历程
  • 收稿日期:  2016-11-17

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