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A new class of materials with promising thermoelectric properties: MNiSn (M=Ti, Zr, Hf)

Abstract

TiNiSn, ZrNiSn and HfNiSn are members of a large group of intermetallic compounds which crystallize in the cubic MgAgAs-type structure. Polycrystalline samples of these compounds have been prepared and investigated for their thermoelectric properties. With thermopowers of about {minus}200 {micro}V/K and resistivities of a few m{Omega}cm, power factors S{sup 2}/{rho} as high as 38 {micro}W/K{sup 2}cm were obtained at 700 K. These remarkably high power factors are, however, accompanied by a thermal conductivity, solid solutions Zr{sub 1{minus}x}Hf{sub x}NiSn, Zr{sub 1{minus}x}Ti{sub x}NiSn, and Hf{prime}{sub 1{minus}x}Ti{sub x}NiSn were formed. The figure of merit of Zr{sub 0.5}Hf{sub 0.5}NiSn at 700 K (ZT = 0.41) exceeds the end members ZrNiSn (ZT = 0.26) and HfNiSn (ZT = 0.22).
Publication Date:
Jul 01, 1997
Product Type:
Conference
Reference Number:
EDB-00:007287
Resource Relation:
Conference: 1997 Materials Research Society Spring Meeting, San Francisco, CA (US), 03/31/1997--04/03/1997; Other Information: Single article reprints are available through University Microfilms Inc., 300 North Zeeb Road, Ann Arbor, Michigan 48106; PBD: 1997; Related Information: In: Thermoelectric materials -- New directions and approaches. Materials Research Society symposium proceedings, Volume 478, by Tritt, T.M.; Kanatzidis, M.G.; Lyon, H.B. Jr.; Mahan, G.D. [eds.], 359 pages.
Subject:
30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; THERMOELECTRIC MATERIALS; THERMOELECTRIC PROPERTIES; TITANIUM ALLOYS; NICKEL ALLOYS; ZIRCONIUM ALLOYS; HAFNIUM ALLOYS; TIN ALLOYS; INTERMETALLIC COMPOUNDS; CRYSTAL STRUCTURE; SEEBECK EFFECT; THERMAL CONDUCTIVITY; EXPERIMENTAL DATA
OSTI ID:
20014246
Research Organizations:
Bell Labs., Murray Hill, NJ (US)
Country of Origin:
United States
Language:
English
Other Identifying Numbers:
Other: ISBN 1-55899-382-7; TRN: IM200012%%174
Availability:
Materials Research Society, 506 Keystone Drive, Warrendale, PA 15086 (US); $71.00. Prices may become outdated.
Submitting Site:
DELTA
Size:
page(s) 109-114
Announcement Date:

Citation Formats

Hohl, H, Ramirez, A P, Kaefer, W, Fess, K, Thurner, Ch, Kloc, Ch, and Bucher, E. A new class of materials with promising thermoelectric properties: MNiSn (M=Ti, Zr, Hf). United States: N. p., 1997. Web.
Hohl, H, Ramirez, A P, Kaefer, W, Fess, K, Thurner, Ch, Kloc, Ch, & Bucher, E. A new class of materials with promising thermoelectric properties: MNiSn (M=Ti, Zr, Hf). United States.
Hohl, H, Ramirez, A P, Kaefer, W, Fess, K, Thurner, Ch, Kloc, Ch, and Bucher, E. 1997. "A new class of materials with promising thermoelectric properties: MNiSn (M=Ti, Zr, Hf)." United States.
@misc{etde_20014246,
title = {A new class of materials with promising thermoelectric properties: MNiSn (M=Ti, Zr, Hf)}
author = {Hohl, H, Ramirez, A P, Kaefer, W, Fess, K, Thurner, Ch, Kloc, Ch, and Bucher, E}
abstractNote = {TiNiSn, ZrNiSn and HfNiSn are members of a large group of intermetallic compounds which crystallize in the cubic MgAgAs-type structure. Polycrystalline samples of these compounds have been prepared and investigated for their thermoelectric properties. With thermopowers of about {minus}200 {micro}V/K and resistivities of a few m{Omega}cm, power factors S{sup 2}/{rho} as high as 38 {micro}W/K{sup 2}cm were obtained at 700 K. These remarkably high power factors are, however, accompanied by a thermal conductivity, solid solutions Zr{sub 1{minus}x}Hf{sub x}NiSn, Zr{sub 1{minus}x}Ti{sub x}NiSn, and Hf{prime}{sub 1{minus}x}Ti{sub x}NiSn were formed. The figure of merit of Zr{sub 0.5}Hf{sub 0.5}NiSn at 700 K (ZT = 0.41) exceeds the end members ZrNiSn (ZT = 0.26) and HfNiSn (ZT = 0.22).}
place = {United States}
year = {1997}
month = {Jul}
}