研究了等离子喷涂粉末沉积率对功能梯度涂层的结合强度影响,结果表明:在设计比例下,由于ZrO2的沉积率低,使涂层表面纯陶瓷层与次表层的成分梯度增大,应力梯度增加,导致界面结合变弱,涂层结合强度降低。通过增加次表层ZrO2含量,可较大幅度增加涂层的结合强度。
The effect of powder deposit efficiency of plasma spray on combinative intensity of functionally gradient coatings is studied.Tle results show that deposit efficiency of ZrO2 is lower than Al/Ni,so the grads of component and stress between surface layer and the secondary one is more apparent increased,the combine of interface is more weakly and the combinative intensity of coatings is lower.Increase the content of ZrO2 in secondary layer can get the higher combinative intensity of coatings.
参考文献
[1] | B B 库吉诺夫.等离子涂层[M].北京:中国科学技术出版社,1981 |
[2] | 魏涛;雷廷权;周玉 等.陶瓷热障涂层的研究进展[J].宇航材料工艺,1997,3(03):1. |
[3] | 王鲁 .功能梯度热障涂层的材料设计基础理论和断裂机制研究[D].北京:北京理工大学,1998. |
[4] | 徐京娟.金属物理性能分析[M].上海:上海科学技术出版社,1988 |
[5] | 唐新峰;张联盟;袁润章 .具有热应力缓和功能的梯度材料的特性评价技术[J].材料科学与工程,1993,11(01):31. |
[6] | 刘正义,向兴华.等离子喷涂陶瓷-金属界面结构[C].'98全国材料表面与界面的科学与工程研讨会论文摘要集,1998:12~19. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%