热压烧结P型碲化铋基热电材料的显微组织与性能

doi:10.13228/j.boyuan.issn1006-6543.20150065

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (0 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to overcome the poor processing performance and high orientation of the single crystal products， bismuth telluride based P-type thermoelectric materials were prepared by melting-quenching-crushing-hot pressing process with high-purity elemental Te， Bi and Sb as raw materials. The oxygen content and particle size of the powder before sintering were determined by using the oxygen and nitrogen analyzer， particle size analyzer. The phase structure and microstructure along the two different directions of the sintered body were analyzed by X-ray diffraction and scanning electron microscope. The thermoelectric performances in different directions show that both the electrical and thermal conductivities show anisotropy to a certain extent， while the Seebeck coefficient and the[ZT]value are almost isotropic. Compared with the current commercially available single crystal products， the orientation degree of samples decreases obviously， and the relative density of the final sample reaches up to 99% with a peak[ZT]value of 1.02. The hot pressing process has a lot of advantages， such as simple equipment， low cost and high efficiency， making it suitable for promotion to industrial scale production.

Key words： Key words：Thermoelectric materials powder metallurgy orientation hot pressing

Received: 30 July 2015 Published: 12 June 2016

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	GAO Yuan
	ZHU Liu

Cite this article:

GAO Yuan,ZHU Liu. Microstructure and properties of hot pressed P-type bismuth tellurium based thermoelectric materials[J]. , 2016, 26(03): 49-54.

URL:

http://edit.chinamet.cn/Jweb_fmyjgy/EN/10.13228/j.boyuan.issn1006-6543.20150065 OR http://edit.chinamet.cn/Jweb_fmyjgy/EN/Y2016/V26/I03/49

[1]高远, 李杏英, 蒋玉思, 等.半导体制冷材料的发展[J].广东有色金属学报, 2003, 13(1):34-36 [2]卢波辉, 赵新兵, 倪华良, 等.热压法制备基热电材料的组织与性能[J].兵器材料科学与工程, 2004, 27(3):13-16 [3]Jiang Q, Yan H, Khaliq J, et al.Large ZT enhancement in hot forged nanostructured p-type Bi05Sb1.5Te3 bulk alloys[J].Journal of Materials Chemistry A, 2014, 2(16):5785-5790 [4]韩领, 蒋阳, 蓝新正, 等.纳米颗粒掺杂-.-的快速热压制备和热电性能表征[J].粉末冶金工业, 2011, 21(4):53-57 [5]蒋俊, 许高杰, 崔平, 等.掺杂量对型基烧结材料热电性能的影响[J].物理学报, 2006, 55(9):4849-4853 [6]王磊, 路清梅, 张忻, 等.快淬和球磨时间对型.合金热电性能的影响[J].无机材料学报, 2010, 25(6):588-592 [7]卢波辉, 赵新兵, 倪华良, 等.热压法制备基热电材料的组织与性能[J].兵器材料科学与工程, 2004, 27(3):13-16 [8]丁夏楠, 蒋阳, 杨奔, 等.掺杂基热电材料的粉末冶金法制备及其性能研究[J].粉末冶金工业, 2012, 22(4):35-40 [9]Xie W, He J, Zhu S, et al.Investigation of the sintering pressure and thermal conductivity anisotropy of melt-spun spark-plasma-sintered (Bi,Sb)2Te3 thermoelectric materials[J].Journal of Materials Research, 2011, 26(15):1791-1799 [10] Srinivasan R, Spowart J E, Gothard N.Control of crystallographic texture and grain size in bulk thermoelectric materials through constrained deformation: U.S. Patent 8, 551, 441[P]. 2013-10-8. [11]Seo J, Cho D, Park K, et al.Fabrication and thermoelectric properties of p-type Bi05Sb1.5Te3 compounds by ingot extrusion[J].Materials research bulletin, 2000, 35(13):2157-2163 [12] Cho D C, Lim C H, Lee D M, et al.Effect of oxygen content on thermoelectric properties of sintered Bi-Te based compounds[C]//Materials Science Forum. 2004，449：905-908. [13]Horio Y, Inoue A.Effect of Oxygen Content on Thermoelectric Properties of n-Type (Bi,Sb)2(Te,Se)3 Alloys Prepared by Rapid Solidification and Hot-Pressing Techniques[J].Materials transactions, 2006, 47(5):1412-1416 [14]Shen J J, Hu L P, Zhu T J, et al.The texture related anisotropy of thermoelectric properties in bismuth telluride based polycrystalline alloys[J].Applied Physics Letters, 2011, 99(12):124102-124102-3 [15]Grasso S, Tsujii N, Jiang Q, et al.Ultra low thermal conductivity of disordered layered p-type bismuth telluride[J].Journal of Materials Chemistry C, 2013, 1(12):2362-2367 [16]Caillat T, Carle M, Pierrat P, et al.Thermoelectric properties of (BixSb1? x)2Te3 single crystal solid solutions grown by the THM method[J].Journal of Physics and Chemistry of Solids, 1992, 53(8):1121-1129