Thermal shock behavior of nanostructured and microstructured thermal barrier coatings on a Fe-based alloy

被引：33
作者：
Zhou, Changhai [1 ,2 ]
Zhang, Qiuming [3 ]
Li, Yao [2 ]
机构：
[1] Harbin Inst Technol, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150001, Peoples R China
[3] Harbin Inst Technol, Sch Chem Engn & Technol, Harbin 150001, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2013年 / 217卷
基金：
中国国家自然科学基金;
关键词：
TBCs; Fe-Cr-Ni; Air plasma spray; Thermal shock; ZIRCONIA COATINGS; THERMOMECHANICAL FATIGUE; DAMAGE MECHANISMS; SYSTEMS; RESISTANCE; OXIDATION; FAILURE;
D O I：
10.1016/j.surfcoat.2012.11.074
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Thermal barrier coatings (TBCs) of nanostructured and microstructured yttria stabilized zirconia (YSZ) were deposited on a Fe-based alloy of GH2132 by air plasma spray. The thermal shock behavior of both coatings was investigated in a comparative aspect. Scanning electron microscopy (SEM) and high resolution digital camera were employed to examine the surface and cross-sectional morphologies of coatings before and after thermal shock. Results revealed that nanostructured TBCs was superior to the rnicrostructured TBCs in thermal shock performance. In the case of microstructured TBCs, both the TBC and the bond coat were separated from the substrate. However, the failure of nanostructured TBCs showed that only local TBC spalled and the penetrating cracks widened. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：70 / 75
页数：6
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