Composites of Higher Manganese Silicides and Nanostructured Secondary Phases and Their Thermoelectric Properties

Zhou, A. J. and Zhao, X. B. and Zhu, T. J. and Cao, Y. Q. and Stiewe, C. and Haßdorf, R. and Müller, E. (2009) Composites of Higher Manganese Silicides and Nanostructured Secondary Phases and Their Thermoelectric Properties. Journal of Electronic Materials, 38 (7), pp. 1072-1077. DOI: 10.1007/s11664-009-0774-7. ISSN 1543-186X .

Full text not available from this repository.

Abstract

Composites of higher manganese silicides (HMS) and hydrothermally synthesized nanostructured Ag2Te or PbTe powders were fabricated by mechanical mixing and hot-pressing. A reduction of the thermal conductivity and an increase of the Seebeck coefficient were obtained for the Ag2Te/HMS composite, while the Seebeck coefficient of the PbTe/HMS composite was less influenced and its thermal conductivity decreased too. However, both composites showed a considerably reduced electrical conductivity, which degraded the figure of merit. The lattice contribution was found to be the main part of the thermal conductivity for all the samples. The present results indicate that introducing a secondary phase into a matrix material could be an effective way to reduce the thermal conductivity. On the other hand, a more detailed design of the microstructures and the distribution of the secondary phases is still needed with respect to the effect on the electrical properties.

Document Type:

Article

Title:

Composites of Higher Manganese Silicides and Nanostructured Secondary Phases and Their Thermoelectric Properties

Authors:

Authors	Institution or Email of Authors
Zhou, A. J.	ajzhou.zju@gmail.com
Zhao, X. B.	State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
Zhu, T. J.	State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
Cao, Y. Q.	State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
Stiewe, C.	German Aerospace Center, Institute of Materials Research, Köln, Germany
Haßdorf, R.	German Aerospace Center, Institute of Materials Research, Köln, Germany
Müller, E.	German Aerospace Center, Institute of Materials Research, Köln, Germany

Date:

21 April 2009

Journal or Publication Title:

Journal of Electronic Materials

Refereed publication:

Yes

In Open Access:

In SCOPUS:

Yes

In ISI Web of Science:

Yes

Volume:

DOI:

10.1007/s11664-009-0774-7

Page Range:

pp. 1072-1077

ISSN:

1543-186X

Status:

Published

Keywords:

Higher manganese silicides (HMS) - hot-pressing - thermoelectric properties - composites

HGF - Research field:

Aeronautics, Space and Transport

HGF - Program:

Transport

HGF - Program Themes:

V BF - Bodengebundene Fahrzeuge

DLR - Research area:

Transport

DLR - Program:

V BF - Bodengebundene Fahrzeuge

DLR - Research theme (Project):

V - Fahrzeugenergiesysteme (old)

Location:

Köln-Porz

Institutes and Institutions:

Institute of Materials Research > Thermoelectric Materials and Systems

Deposited By:

Dr. Knud Zabrocki

Deposited On:

24 Nov 2009 16:43

Last Modified:

07 Feb 2013 20:30

Repository Staff Only: item control page