Thermal conductivity and thermal diffusivity measurements of thermal barrier coatings

被引：0

作者：

Qiu, Lin ^{[1
,2
]}

Zheng, Xing-Hua ^{[1
,2
]}

Li, Qian ^{[1
,2
]}

Tang, Da-Wei ^{[1
]}

Qian, Yang-Bao ^{[3
]}

Zhang, Wei-Gang ^{[3
]}

机构：

[1] Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China

[2] Graduate School of Chinese Academy of Sciences, Beijing 100039, China

[3] Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

来源：

Gongneng Cailiao/Journal of Functional Materials | 2010年 / 41卷 / SUPPL. 2期

关键词：

Diffusion - Silicon compounds - Thermal diffusivity - Zirconium compounds - Lanthanum compounds - Plasma spraying - Thermal conductivity - Porosity;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We measured the thermal conductivity and thermal diffusivity of plasma-spray thermal barrier coatings, Y2SiO5 and La2Zr2O7, using a 3ω method similar to a four-probe resistance measurement. The results agree well with those showed in literatures. Three Y2SiO5 samples with different porosities as well as two La2Zr2O7 samples with different porosities are determined near room temperature. The results show that porosity plays an important role in the performance of thermal transport. Furthermore, porosity has a two-way relationship with the thermal diffusivity; the thermal diffusivity of a specific thermal barrier coating is largest at a certain porosity.

引用

页码：264 / 267

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