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	Preparation of Ca/sub 3/Co/sub 4/O/sub 9/ by polyacrylamide gel processing and its thermoelectric properties
	Ying Song ; Ce-Wen Nan
	2010-10-12 ; 2010-10-12
关键词	Experimental/ calcium compounds ceramics electrical conductivity plasma materials processing polymer gels powders Seebeck effect sintering/ powder preparation polyacrylamide gel processing thermoelectric properties microstructure ceramics plasma sintering Seebeck coefficient electrical conductivity power factor value solid-state reaction processing temperature 700 C electrical conductivity 128 S/cm Ca/sub 3/Co/sub 4/O/sub 9// A8120L Preparation of ceramics and refractories A8120E Powder techniques, compaction and sintering A7220P Thermoelectric effects (semiconductors/insulators) A7280S Electrical conductivity of insulators A5275R Plasma applications in manufacturing and materials processing A6480G Microstructure A8270G Gels and sols/ temperature 9.7315E+02 K electrical conductivity 1.28E+04 S/m/ Ca3Co4O9/ss Co4/ss Ca3/ss O9/ss Ca/ss Co/ss O/ss
中文摘要	Ca/sub 3/Co/sub 4/O/sub 9/ powder was prepared by a polyacrylamide gel route in this paper. The effect of the processing on microstructure and thermoelectric properties of Ca/sub 3/Co/sub 4/O/sub 9/ ceramics via spark plasma sintering were investigated. Electrical measurement shows that the Seebeck coefficient and conductivity are 170 mu V/K and 128 S/ cm, respectively, at 700 degrees C, yielding a power factor value of 3.70 * 10/sup -4/ W m/sup -1/ K/sup -2/ at 700 degrees C, which is larger than that of Ca/sub 3/Co/sub 4/O/sub 9/ ceramics via solid-state reaction processing. The polyacrylamide gel processing is a fast, cheap, reproducible and easily scaled up chemical route to improve the thermoelectric properties of Ca/sub 3/Co/sub 4/O/sub 9/ ceramics by preparing the homogeneous and pure Ca/sub 3/Co/sub 4/O/sub 9/ phase.
语种	英语
出版者	Springer Netherlands ; Netherlands
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78247]
专题	清华大学
推荐引用方式 GB/T 7714	Ying Song,Ce-Wen Nan. Preparation of Ca/sub 3/Co/sub 4/O/sub 9/ by polyacrylamide gel processing and its thermoelectric properties[J],2010, 2010.
APA	Ying Song,&Ce-Wen Nan.(2010).Preparation of Ca/sub 3/Co/sub 4/O/sub 9/ by polyacrylamide gel processing and its thermoelectric properties..
MLA	Ying Song,et al."Preparation of Ca/sub 3/Co/sub 4/O/sub 9/ by polyacrylamide gel processing and its thermoelectric properties".(2010).

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