Substrate and bond coat compositions: factors affecting alumina scale adhesion

被引:344
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
收藏
页码:201 / 211
页数:11
相关论文
共 58 条
[31]  
MOON DP, 1989, MATER SCI TECH SER, V5, P754, DOI 10.1179/026708389790222799
[32]   DIFFUSIONAL TRANSPORT AND PREDICTING OXIDATIVE FAILURE DURING CYCLIC OXIDATION OF BETA-NIAL ALLOYS [J].
NESBITT, JA ;
VINARCIK, EJ ;
BARRETT, CA ;
DOYCHAK, J .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1992, 153 (1-2) :561-566
[33]  
NEWCOMB SB, 1988, INST PHYS CONF SER, V93, P43
[34]  
Pint B. A., 1995, High-Temperature Ordered Intermetallic Alloys VI. Symposium, P987
[35]  
Pint BA, 1998, J AM CERAM SOC, V81, P305, DOI 10.1111/j.1151-2916.1998.tb02335.x
[36]   Characterization of the high temperature oxidation of TBC-coated oxide-dispersed β-NiAl substrates [J].
Pint, BA .
MATERIALS AT HIGH TEMPERATURES, 1997, 14 (04) :403-412
[37]   On the formation of interfacial and internal voids in alpha-Al2O3 scales [J].
Pint, BA .
OXIDATION OF METALS, 1997, 48 (3-4) :303-328
[38]   O-18/SIMS CHARACTERIZATION OF THE GROWTH-MECHANISM OF DOPED AND UNDOPED ALPHA-AL2O3 [J].
PINT, BA ;
MARTIN, JR ;
HOBBS, LW .
OXIDATION OF METALS, 1993, 39 (3-4) :167-195
[39]   THE REACTIVE ELEMENT EFFECT IN COMMERCIAL ODS FECRAL ALLOYS [J].
PINT, BA ;
GARRATTREED, AJ ;
HOBBS, LW .
MATERIALS AT HIGH TEMPERATURES, 1995, 13 (01) :3-16
[40]   Experimental observations in support of the dynamic-segregation theory to explain the reactive-element effect [J].
Pint, BA .
OXIDATION OF METALS, 1996, 45 (1-2) :1-37