Heat treatment of nanostructured thermal barrier coating

被引：60

作者：

Wang, Na ^{[1
]}

Zhou, Chungen ^{[1
]}

Gong, Shengkai ^{[1
]}

Xu, Huibin ^{[1
]}

机构：

[1] Beijing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2007年 / 33卷 / 06期

基金：

中国国家自然科学基金;

关键词：

nanostructure; annealing; thermal barrier coating; plasma spraying; ELASTIC-MODULUS; CRYSTAL-GROWTH; ZIRCONIA;

D O I：

10.1016/j.ceramint.2006.03.022

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A nanostructured thermal barrier coating has been prepared by air plasma spraying using YSZ (8 wt% Y2O3 partially stabilized zirconia) nano powder. The effect of annealing on the nanostructured zirconia coating has been investigated. The grain size of the nanostructured zirconia coating increased with increasing annealing time and temperature. Grains grew with preferential direction and into a columnar structure. The growth activation energy in the nanocrystalline grains is very low, which comes from existence of micro-pores in the coating and the grain-rotation-induced grain coalescence (GRIGC) mechanism. (C) 2006 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：1075 / 1081

页数：7

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