Microstructure of plasma-sprayed Al2O3-ZrO2 composite coatings

被引：1
|
作者：
Chen, Lubin
Chen, Chuanzhong [1 ]
Zhang, Liang
Qi, Biao
Lei, Ting-Quan
机构：
[1] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
SURFACE REVIEW AND LETTERS | 2006年 / 13卷 / 05期
关键词：
plasma spraying; thermal barrier coatings; alumina; zirconia-yttria; microstructure;
D O I：
10.1142/S0218625X06008475
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Thermal barrier coatings of Al2O3-ZrO2 were prepared by air plasma spraying on the surface of 20G steel. Phase constitution, microstructures and elemental distributions of the coatings were studied by X-ray diffraction, scanning electron microscope and electron probe X-ray microanalysis. The results show that the plasma spray coating mainly consists of alpha-Al2O3, c-ZrO2, and t-ZrO2. The bond state of the interface between the top layer and bond layer is fine, and the bond layer has a good combination with the substrate. ZrO2 and Al2O3 structures can closely integrate together and form compact top layer system.
引用
收藏
页码：545 / 549
页数：5
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