Phase composition of nanostructured zirconia coatings deposited by air plasma spraying

被引：18
|
作者：
Liang, B [1 ]
Ding, CX [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2005年 / 191卷 / 2-3期
关键词：
nanostructured coatings; zirconia; air plasma spray;
D O I：
10.1016/j.surfcoat.2004.03.041
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Plasma sprayed nanostructured yttria stabilized zirconia coatings were deposited using nanostructured powder. The phase composition and microstructure characterization of the nanostructured as-sprayed zirconia coatings were studied by TEM, FESEM and XRD. The results showed the as-sprayed nanostructured zirconia coatings exhibited the typical lamellar structure. which was mainly composed of column grains with a diameter around 100 nm. The primary phase of as-sprayed nanostructured coatings was non-transformable tetragonal zirconia (T' phase) having near the overall yttria content of nanostructured as-sprayed coatings. In addition, the typical superlattice-type reflections of the tetragonal phase were observed in the as-sprayed nanostructured coatings. No monoclinic phase was observed in the nanostructured as-sprayed coatings. There existed small segmentation cracks with lengths in the size range around 10 tun in the coatings. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：267 / 273
页数：7
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