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Current assisted sintering of PbTe—Effects on thermoelectric and mechanical properties

Schmitz, Andreas and Stiewe, Christian and Zabrocki, Knud and de Boor, Johannes and Mull, Klaus and Müller, Eckhard (2016) Current assisted sintering of PbTe—Effects on thermoelectric and mechanical properties. Materials Research Bulletin, 86, pp. 159-166. Elsevier. DOI: 10.1016/j.materresbull.2016.10.023 ISSN 0025-5408

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1016/j.materresbull.2016.10.023

Abstract

Lead telluride is among the best performing thermoelectric materials in an intermediate temperature range up to 750 K. It has thus been widely used for technology development and is still a candidate material for high efficiency thermoelectric generators for space applications. However, its mechanical properties present major difficulties for processing and successful application. Material preparation such as milling and sintering has a great influence on the resulting material properties and can be utilized to optimize material properties. Within this work the influence of powder preparation and sintering temperature on the resulting thermoelectric and mechanical properties of undoped lead telluride (PbTe) is investigated. We find that thermoelectric properties are mainly dominated by formation and healing of lattice defects, whereas mechanical properties are dominated by grain size. Additionally the relevance of residual strain as a consequence of temperature gradients inside samples during sintering is demonstrated.

Item URL in elib:https://elib.dlr.de/108733/
Document Type:Article
Title:Current assisted sintering of PbTe—Effects on thermoelectric and mechanical properties
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schmitz, AndreasGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
Stiewe, ChristianGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
Zabrocki, KnudGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
de Boor, JohannesGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
Mull, KlausGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
Müller, EckhardGerman aerospace center, Institute of materials research, Köln, Germany and Justus Liebig university Giessen, Institute of inorganic and analytical chemistry, 35392 Giessen, GermanyUNSPECIFIED
Date:21 October 2016
Journal or Publication Title:Materials Research Bulletin
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:86
DOI :10.1016/j.materresbull.2016.10.023
Page Range:pp. 159-166
Publisher:Elsevier
ISSN:0025-5408
Status:Published
Keywords:Semiconductors, Mechanical properties, Electrical conductivity, Thermal conductivity, Thermoelectrics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - NGC-Antriebsstrang (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Thermoelectric Materials and Systems
Deposited By: Yasseri, Mohammad
Deposited On:05 Dec 2016 07:29
Last Modified:06 Sep 2019 15:30

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