ON THE THERMAL CYCLING LIFE OF PLASMA-SPRAYED YTTRIA-STABILIZED ZIRCONIA COATINGS

被引：29

作者：

JOSHI, SV

SRIVASTAVA, MP

机构：

[1] Defence Metallurgical Research Laboratory, P.O. Kanchanbagh

来源：

SURFACE & COATINGS TECHNOLOGY | 1993年 / 56卷 / 03期

关键词：

D O I：

10.1016/0257-8972(93)90254-L

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influence of various factors on the thermal shock resistance of plasma-sprayed yttria-stabilized zirconia (YSZ) coatings was investigated. The coatings, formed using different spraying conditions, were repeatedly exposed to a thermal cycle involving a 30 minute heating period at 1200-degrees-C followed by a water quench during this study. The results suggest that, for any given YSZ powder, there exists an optimum plasma arc current for obtaining coatings that best endure such severe temperature cycling conditions. Other coating variables, such as spray distance and powder feed rate, are also observed to affect coating durability. Furthermore, the YSZ overlayer thickness and the bond coat material employed are found to be important coating life determining factors.

引用

页码：215 / 224

页数：10

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