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• 研究论文 • 上一篇    

氧化锆纳米等离子涂层的结构与热震性能研究

梁波, 丁传贤   

  1. 中国科学院上海硅酸盐研究所, 上海 200050
  • 收稿日期:2004-11-19 修回日期:2005-02-25 出版日期:2006-01-20 网络出版日期:2006-01-20

Microstructure of Nanostructured Zirconia Coating and Its Thermal Shock Resistance

LIANG Bo, DING Chuan-Xian   

  1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
  • Received:2004-11-19 Revised:2005-02-25 Published:2006-01-20 Online:2006-01-20

摘要: 利用大气等离子喷涂技术, 制备了氧化锆纳米结构和常规结构涂层, 并对涂层的显微结构进行了探查. 结果表明: 纳米结构涂层是由直径为100nm左右的柱状晶粒组成的层状结构; 涂层中存在大量的微裂纹和分布均匀的细小圆气孔. 纳米结构的涂层具有比常规涂层更好的抗热震性能, 其热震行为与常规涂层不同.

关键词: 等离子喷涂, 纳米结构, 氧化锆涂层, 热震性能

Abstract: The nanostructured and conventional zirconia coatings were fabricated by an atmosphere plasma spraying technique. The microstructure of the as-sprayed zirconia
coatings was analyzed. The results show that the nanostructured zirconia coating is a typical lamellar structure composed of columnar grain about
100nm in diameter. In the nanostructured zirconia coating, the pore is fine and of homogeneous distribution, and there exist a large quantity of small
microcracks. The nanostructured zirconia coating possesses better thermal shock resistance than the conventional zirconia coating.

Key words: plasma spraying, nanostructured coating, zirconia, thermal shock behavior

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