Preparation of ASZ thermal storage ceramics for solar thermal power generation

Wu, Jian-feng, Fang, Bin-zheng, Xu, Xiao-hong, Li, Peng, Lao, Xin-bin and Zheng, Shu-qing (2013). Preparation of ASZ thermal storage ceramics for solar thermal power generation. In: Guangming Zhao, Liping Lu, Bin Long and Zunyu Nie, China Functional Materials Technology and Industry Forum. 2012 China Functional Materials Technology and Industry Forum (CFMTIF 2012), Kunming, China, (44-51). 9-12 November 2013. doi:10.4028/www.scientific.net/AMM.320.44

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Author Wu, Jian-feng
Fang, Bin-zheng
Xu, Xiao-hong
Li, Peng
Lao, Xin-bin
Zheng, Shu-qing
Title of paper Preparation of ASZ thermal storage ceramics for solar thermal power generation
Conference name 2012 China Functional Materials Technology and Industry Forum (CFMTIF 2012)
Conference location Kunming, China
Conference dates 9-12 November 2013
Proceedings title China Functional Materials Technology and Industry Forum   Check publisher's open access policy
Journal name Applied Mechanics and Materials   Check publisher's open access policy
Place of Publication Stafa-Zurich, Switzerland
Publisher Trans Tech Publications
Publication Year 2013
Year available 2013
Sub-type Fully published paper
DOI 10.4028/www.scientific.net/AMM.320.44
ISBN 9783037856857
ISSN 1660-9336
Editor Guangming Zhao
Liping Lu
Bin Long
Zunyu Nie
Volume 320
Start page 44
End page 51
Total pages 8
Language eng
Abstract/Summary This paper aims to investigate the properties and microstructure of Al2O3-SiC-ZrO2 (ASZ) composite ceramics for solar thermal power generation. The composite ceramics were prepared from α-Al2O3, partially stabilized zirconia (Y2O3 5.2 wt%) and silicon carbide fired at 1280 °C for 2 h through pressureless sintering. Influence of the contents of SiC and ZrO2 on the performance of ASZ composite ceramics have been observed and extensively investigated via XRD, SEM, etc. The results revealed that the thermal shock resistance and high-temperature thermal properties would increase with the increase of the SiC content. No cracking occurred after 30 times thermal shock (from room temperature to 800°C with air cooling) while the bending strength after thermal shock test, the thermal expansion coefficient, the heat capacity, the thermal conductivity coefficient and the thermal conductivity were 76.99MPa (with a growth rate of 27.89% after thermal shock), 5.85×10-6 °C -1, 1.05 kJ (kg K)-1, 0.01 cm2s-1, 2.26 W (m K)-1, respectively. The XRD patterns indicated that the main crystal phases included corundum, silicon carbide and zirconium silicate while the SEM images illustrated the well-grown crystal grains had the sizes distributed among 5- 120 μm.
Subjects 2200 Engineering
Keyword Al2O3-SiC-ZrO2 composite ceramics
Microstructure
Silicon carbide
Solar thermal power generation
Thermal properties
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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