Evaluation of microhardness and elastic modulus of thermally sprayed nanostructured zirconia coatings

被引：184

作者：

Lima, RS ^{[1
]}

Kucuk, A ^{[1
]}

Berndt, CC ^{[1
]}

机构：

[1] SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA

来源：

SURFACE & COATINGS TECHNOLOGY | 2001年 / 135卷 / 2-3期

关键词：

thermal spray; microhardness; elastic modulus; roughness; nanostructured zirconia-yttria; thermal barrier coatings;

D O I：

10.1016/S0257-8972(00)00997-X

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Results concerning microhardness and roughness (R-a) of plasma sprayed coatings fabricated from nanostructured partially stabilized zirconia (PSZ) feedstock are presented. Nanostructured zirconia particles were plasma sprayed (Ar/H-2) at three power levels, with two argon flow rates at two spray distances. The results indicate that the microhardness, elastic modulus and roughness of the nanostructured zirconia coatings exhibit the following trends: the smoother the roughness, the higher the microhardness and elastic modulus. It was found that roughness is an indicator of the coating state that reflects the intrinsic microstructure of the coatings. It was ascertained that a surface profilometer could be used to determine the level of microhardness and elastic modulus as a non-destructive and in situ test by simple comparison with standard samples. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：166 / 172

页数：7

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