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Evaluation of Detachable Ga-Based Solder Contacts for Thermoelectric Materials

Kolb, Hendrik and Sottong, Reinhard and Dasgupta, Titas and Müller, Eckhard and de Boor, Johannes (2017) Evaluation of Detachable Ga-Based Solder Contacts for Thermoelectric Materials. Journal of Electronic Materials. Springer. DOI: 10.1007/s11664-017-5486-9 ISSN 0361-5235

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Abstract

Low electrical and thermal contact resistances are a prerequisite for highly efficient thermoelectric generators. Likewise, certain measurement setups for characterization of thermoelectric materials rely on good-quality contacts between sample and setup. Detachable contacts are an interesting alternative to permanent contacting solutions due to ease of handling and nondestructive disassembly of valuable samples. Therefore, the applicability of gallium-based liquid metal solder as detachable contact material was studied, particularly with regard to compatibility of the solder with state-of-the-art thermoelectric materials CoSb3, Mg2Si, and FeSi2. Tungsten, nickel, chromium, and titanium were tested as protective coatings between the thermoelectric material and liquid metal solder. Electrical measurements showed that some materials form excellent and stable contacts with the solder for a limited temperature range. At higher temperatures, application of a protective layer was found to be necessary for all investigated materials. Tungsten and nickel showed promising results as protective layer.

Item URL in elib:https://elib.dlr.de/115153/
Document Type:Article
Title:Evaluation of Detachable Ga-Based Solder Contacts for Thermoelectric Materials
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kolb, Hendrikgerman aerospace center, institute of materials research, köln, germanyUNSPECIFIED
Sottong, Reinhardgerman aerospace center, institute of materials research, köln, germanyUNSPECIFIED
Dasgupta, Titasdepartment of metallurgical engineering and materials science, indian institute of technology bombay, mumbai 400076, indiaUNSPECIFIED
Müller, Eckhardgerman aerospace center, institute of materials research, köln, germany and justus liebig university giessen, institute of inorganic and analytical chemistry, 35392 giessen, germanyUNSPECIFIED
de Boor, Johannesgerman aerospace center, institute of materials research, köln, germanyhttps://orcid.org/0000-0002-1868-3167
Date:18 April 2017
Journal or Publication Title:Journal of Electronic Materials
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1007/s11664-017-5486-9
Publisher:Springer
ISSN:0361-5235
Status:Published
Keywords:Thermoelectrics, Thermoelectric generator, Contact development, Liquid metal, Solder, Material characterization
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:22 Nov 2017 10:21
Last Modified:31 Jul 2019 20:12

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