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	Fabrication and thermoelectric properties of fine-grained TiNiSn compounds
	Zou, Minmin ; Li, Jing-Feng ; Du, Bing ; Liu, Dawei ; Kita, Takuji
	2010-10-12 ; 2010-10-12
关键词	Thermoelectric material Half-Heusler compound Mechanical alloying Spark plasma sintering HALF-HEUSLER COMPOUNDS INTERMETALLIC COMPOUNDS FERMI-LEVEL ZRNISN GAP NI POLYCRYSTALS TEMPERATURE STABILITY Chemistry, Inorganic & Nuclear Chemistry, Physical
中文摘要	Nearly single-phased TiNiSn half-Heusler compound thermoelectric materials were synthesized by combining mechanical alloying (MA) and spark plasma sintering (SPS) in order to reduce its thermal conductivity by refining the grain sizes. Although TiNiSn compound powders were not synthesized directly via MA, dense bulk samples of TiNiSn compound were obtained by the subsequent SPS treatment. It was found that an excessive Ti addition relative to the TiNiSn stoichiometry is effective in increasing the phase purity of TiNiSn half-Heusler phase in the bulk samples, by compensating for the Ti loss caused by the oxidation of Ti powders and MA processing. The maximum power factor value obtained in the Ti-compensated sample is 1720 mu W m(-1) K-2 at 685 K, A relatively high ZT value of 0.32 is achieved at 785 K for the present undoped TiNiSn compound polycrystals. (C) 2009 Elsevier Inc. All rights reserved.
语种	英语 ; 英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE ; SAN DIEGO ; 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78130]
专题	清华大学
推荐引用方式 GB/T 7714	Zou, Minmin,Li, Jing-Feng,Du, Bing,et al. Fabrication and thermoelectric properties of fine-grained TiNiSn compounds[J],2010, 2010.
APA	Zou, Minmin,Li, Jing-Feng,Du, Bing,Liu, Dawei,&Kita, Takuji.(2010).Fabrication and thermoelectric properties of fine-grained TiNiSn compounds..
MLA	Zou, Minmin,et al."Fabrication and thermoelectric properties of fine-grained TiNiSn compounds".(2010).

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