In-situ synthesis and thermal shock resistance of cordieritesilicon carbide composites used for solar absorber coating》.pdfVIP

Solar Energy Materials Solar Cells 130 (2014) 257–263 Contents lists available at ScienceDirect Solar Energy Materials Solar Cells journal homepage: /locate/solmat In-situ synthesis and thermal shock resistance of cordierite/silicon carbide composites used for solar absorber coating Xiaohong XU, Zhenggang RAO n, Jianfeng WU, Yonghua LI, Yaxiang ZHANG, Xinbin LAO State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China a r t i c l e i n f o a b s t r a c t Article history: Cordierite/silicon carbide (SiC) composite ceramics with 10, 20 and 30 wt% cordierite were in-situ Received 7 November 2013 prepared via pressureless firing technique using silicon carbide, alumina, Kaolin and talc as starting Received in revised form materials. The results show that the synthesized composites all exhibited the good physical and 30 May 2014 mechanical properties. Among those, A2 composite with 20 wt% in-situ cordierite fired at 1280 1C Accepted 13 July 2014 exhibited the better bending strength and thermal shock resistance. The improvement of thermal shock Available online 5 August 2014 resistance could be attributed to the proper cordierite wrapped around SiC, the homogeneous Keywords: distribution of pores, the well-grown grains, as well as the formation of some