Substrate and bond coat compositions: factors affecting alumina scale adhesion

被引：339

作者：

Pint, BA ^{[1
]}

Wright, IG ^{[1
]}

Lee, WY ^{[1
]}

Zhang, Y ^{[1
]}

Prussner, K ^{[1
]}

Alexander, KB ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1998年 / 245卷 / 02期

关键词：

alumina; oxide scales; scale adhesion; thermal barrier coatings;

D O I：

10.1016/S0921-5093(97)00851-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Thermally grown oxide scales that form beneath ZrO2, top coats play an important role in determining the performance of thermal barrier coatings. Numerous factors, including the composition of both the alloy substrate and the bond coat, affect adhesion of the alpha-Al2O3 scale. Three areas of focus in the formation of an 'ideal', adherent scale encompass: (1) migration of Al and other elements in the metal substrate, (2) segregation of elements to the metal-scale interface and the scale grain boundaries, and (3) generation of stresses in the scale. Examples of the effects of reactive elements, Pt, indigenous S, and reaction temperature on scale adhesion are discussed. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：201 / 211

页数：11

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