Effect of doped copper and silicon content on phase transformation of β-FeSi2

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	Effect of doped copper and silicon content on phase transformation of β-FeSi2
	Gao, Heng-Jiao 1; Chen, Xiu-Juan 2; Feng, Xiao-Peng 2; Gao, Jun-Ling 1
刊名	Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
	2011-05-01
卷号	32 期号:5 页码:17-21
关键词	Combustion Combustion synthesis Copper Heat treatment Intermetallics Phase transitions Semiconductor doping Synthesis (chemical) X ray diffraction X ray diffraction analysis Atomic ratio Eutectoid reaction Heat-treatment process P type semiconductor Phase transformation Silicon content Silicon contents Thermoelectric material XRD analysis
ISSN号	10096264
英文摘要	Thermoelectric material β-FeSi2 was prepared by combustion synthesis and heat treatment process. Effects of copper doped and different silicon content on phase transformation of β-FeSi2 were studied. The phase composition and microstructure of Fe-Si intermetallics were investigated by means of X-ray diffraction(XRD) and scanning electronmicroscopy(SEM). The results show that doping 0.5 at% copper can accelerate eutectoid reaction process (α&rarrβ+Si) during heat treatment, and the transformation from α-Fe2Si5 phase to β-FeSi2 phase is complete and finally formed P-type semiconductor. Samples of β-FeSi2 were prepared by combustion synthesis and heat treatment with the mixture, in which the atomic ratio of Fe to Si was 1:3, and the XRD analysis shows that the excessive content of silicon accelerated the phase transformation of Si+Ε&rarrβ, and Ε phase is eliminated to a large extent, the productivity of β-FeSi2 increased.
语种	中文
出版者	Editorial Office of Transactions of Materials, 18 Xueqing Road, Beijing, 100083, China
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/110959]
专题	省部共建有色金属先进加工与再利用国家重点实验室机电工程学院
作者单位	1.State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China; 2.School of Mechanical and Electronical Engineering, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Gao, Heng-Jiao,Chen, Xiu-Juan,Feng, Xiao-Peng,et al. Effect of doped copper and silicon content on phase transformation of β-FeSi2[J]. Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment,2011,32(5):17-21.
APA	Gao, Heng-Jiao,Chen, Xiu-Juan,Feng, Xiao-Peng,&Gao, Jun-Ling.(2011).Effect of doped copper and silicon content on phase transformation of β-FeSi2.Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment,32(5),17-21.
MLA	Gao, Heng-Jiao,et al."Effect of doped copper and silicon content on phase transformation of β-FeSi2".Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment 32.5(2011):17-21.