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微弧氧化与稀土铈盐封孔对7A85新型铝合金耐蚀和耐磨性能的影响

李重阳 刘道新 叶作彦 张小明 杨智

李重阳, 刘道新, 叶作彦, 张小明, 杨智. 微弧氧化与稀土铈盐封孔对7A85新型铝合金耐蚀和耐磨性能的影响[J]. 机械科学与技术, 2014, 33(1): 127-132.
引用本文: 李重阳, 刘道新, 叶作彦, 张小明, 杨智. 微弧氧化与稀土铈盐封孔对7A85新型铝合金耐蚀和耐磨性能的影响[J]. 机械科学与技术, 2014, 33(1): 127-132.
Li Chong-yang, Liu Dao-xin, Ye Zuo-yan, Zhang Xiao-ming, Yang Zhi. Effect of the Micro-arc Oxidation and Cerium Salt Sealing on the Corrosion and Wear Resistance of New 7A85[J]. Mechanical Science and Technology for Aerospace Engineering, 2014, 33(1): 127-132.
Citation: Li Chong-yang, Liu Dao-xin, Ye Zuo-yan, Zhang Xiao-ming, Yang Zhi. Effect of the Micro-arc Oxidation and Cerium Salt Sealing on the Corrosion and Wear Resistance of New 7A85[J]. Mechanical Science and Technology for Aerospace Engineering, 2014, 33(1): 127-132.

微弧氧化与稀土铈盐封孔对7A85新型铝合金耐蚀和耐磨性能的影响

基金项目: 

国家自然科学基金项目(51171154)资助

详细信息
    作者简介:

    李重阳(1988-),硕士研究生,研究方向为材料表面工程技术与腐蚀防护,lichongyang007@163.com;刘道新(联系人),教授,博士生导师,liudaox@nwpu.edu.cn

    李重阳(1988-),硕士研究生,研究方向为材料表面工程技术与腐蚀防护,lichongyang007@163.com;刘道新(联系人),教授,博士生导师,liudaox@nwpu.edu.cn

Effect of the Micro-arc Oxidation and Cerium Salt Sealing on the Corrosion and Wear Resistance of New 7A85

  • 摘要: 为改善7A85新型铝合金表面的耐蚀和耐磨性能,利用微弧氧化技术在其表面原位生成陶瓷膜层,用稀土铈盐溶液对陶瓷膜进行封孔处理。通过扫描电子显微镜观察陶瓷膜的表面形貌,采用X射线衍射仪分析膜层的相结构,利用盐雾腐蚀试验和电化学测试评价了陶瓷膜的耐蚀性能,用球-盘摩擦磨损试验机研究了陶瓷膜的摩擦学性能。结果表明:7A85铝合金表面微弧氧化陶瓷膜主要由α-Al2O3和γ-Al2O3相组成,陶瓷膜表面经稀土封孔处理后致密性提高。单纯的微弧氧化处理提高了7A85铝合金的耐腐蚀性能,使其抗3.5%NaCl水溶液腐蚀速率降低了1个数量级;对微弧氧化膜层进行稀土铈盐封孔处理进一步提高了膜层的耐蚀性能,腐蚀速率降低1个数量级。微弧氧化陶瓷膜显著提高了7A85铝合金表面的耐磨性能,体积磨损率从4.56×10-3mm3/(N·m)降至5.73×10-4mm3/(N·m);稀土铈盐封孔处理降低了陶瓷膜的摩擦系数,但对磨损速率无显著影响。
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出版历程
  • 收稿日期:  2012-08-30
  • 刊出日期:  2015-06-10

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