Thermal barrier coating adherence to Hf-modified B2 NiAl bond coatings

被引：48

作者：

Jackson, R. W. ^{[1
]}

Lipkin, D. M. ^{[2
]}

Pollock, T. M. ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

[2] GE Global Res, Niskayuna, NY 12309 USA

来源：

ACTA MATERIALIA | 2014年 / 80卷

基金：

美国国家科学基金会;

关键词：

Thermal barrier coating; De lamination; Rumpling; Bond coat; Hafnium; CYCLIC OXIDATION; GROWN OXIDE; FAILURE MECHANISMS; SYSTEMS; DELAMINATION; SEGREGATION; DEGRADATION; INSTABILITY; DURABILITY; SPALLATION;

D O I：

10.1016/j.actamat.2014.07.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The durability of thermal barrier coatings (TBCs) deposited on Hf-modified B2 NiAl bond coatings has been investigated under thermal cycling conditions. The rate of bond coat oxidation and rumpling during thermal cycling was characterized and the cycles to failure measured. The location of cycling-induced cracks in the TBC multilayer was influenced by the bond coat composition but variation in TBC lifetime was small, despite the different failure modes. Analysis of the cycle-dependent degradation phenomena demonstrate a trade-off between rumpling resistance and interfacial toughness as a function of bond coat composition. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：39 / 47

页数：9

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