Development of a Thermal Transport Database for Air Plasma Sprayed ZrO2-Y2O3 Thermal Barrier Coatings

被引：25

作者：

Wang, Hsin ^{[1
]}

Dinwiddie, Ralph B. ^{[1
]}

Porter, Wallace D. ^{[1
]}

机构：

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

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2010年 / 19卷 / 05期

关键词：

laser flash; plasma spray; TBC; thermal diffusivity; ZrO2; ZIRCONIA COATINGS; PHASE-STABILITY; HEAT-TREATMENT; CONDUCTIVITY; MICROSTRUCTURE; EVOLUTION; POROSITY; YSZ;

D O I：

10.1007/s11666-010-9486-z

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Thermal diffusivities of air plasma sprayed (APS) thermal barrier coatings (TBCs) were measured by the laser flash method. The data were used to calculate thermal conductivity of TBCs when provided with density and specific heat data. Due to the complicated microstructure and other processing-related parameters, thermal diffusivity of TBCs can vary as much as three- to four-fold. Data collected from over 200 free-standing ZrO2-7-8wt.%Y2O3 TBCs are presented. The large database gives a clear picture of the expected "band" of thermal diffusivity values. When this band is used as a reference for thermal diffusivity of a specific TBC, the thermal transport property of the TBC can be more precisely described. This database is intended to serve researchers and manufacturers of TBCs as a valuable resource for the evaluation of TBCs.

引用

页码：879 / 883

页数：5

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