RADIATION CHARACTERISTICS OF HIGH-TEMPERATURE TRANSLUCENT THERMAL BARRIER COATINGS

摘要：

Thermal barrier coatings (TBCs) are widely used to reduce the temperature of the metal parts applied in advanced gas turbine. Spectral radiation characteristics of the coating surface are necessary to realize accurate non-contact temperature measurements, radiation flux evaluation and erode monitoring. In this paper, yttriastabilized zirconia (YSZ) described by 4-band spectral band model of absorbing and scatting properties was used as the coating material of the metal vane. The coupled radiation and conduction heat transfer in the coatings were numerically calculated by Monte Carlo and control-volume method to obtain the temperature distributions within the coating. Then we investigated the distributions of spectral emissivity of thermal barrier coating under different conditions (the material properties, the boundary condition, the temperature distribution and the angle). The above analyses provide the application data of radiation characteristics of the high-temperature translucent thermal barrier coatings for the applications of temperature and radiation flux measurements.

关键词： thermal barrier coatings radiation characteristics translucent temperature radiation flux

作者: Dahai Yang Tairan Fu LupingWang Xiaofang Cheng

作者单位: Department of Thermal Science and Energy Engineering University of Science and Technology of China H Department of Thermal Engineering Tsinghua University Key Lab. for Thermal Science and Power Enginee Department of Thermal Science and Energy Engineering University of Science and Technology of China

会议类型: 国际会议

会议名称: The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)

会议地点: 北京

会议语种:英文

页码: 1019-1025

在线出版日期: 2010-10-19（万方平台首次上网日期，不代表论文的发表时间）