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Iron Disilicide as High-Temperature Reference Material for Traceable Measurements of Seebeck Coefficient Between 300 K and 800 K

Ziolkowski, Pawel and Stiewe, Christian and de Boor, Johannes and Druschke, Ines and Zabrocki, Knud and Edler, Frank and Haupt, Sebastian and König, Jan and Müller, Eckhard (2016) Iron Disilicide as High-Temperature Reference Material for Traceable Measurements of Seebeck Coefficient Between 300 K and 800 K. Journal of Electronic Materials, 01-13. Springer. DOI: 10.1007/s11664-016-4850-5 ISSN 0361-5235

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Official URL: http://dx.doi.org/10.1007/s11664-016-4850-5

Abstract

Thermoelectric generators (TEGs) convert heat to electrical energy by means of the Seebeck effect. The Seebeck coefficient is a central thermoelectric material property, measuring the magnitude of the thermovoltage generated in response to a temperature difference across a thermoelectric material. Precise determination of the Seebeck coefficient provides the basis for reliable performance assessment in materials development in the field of thermoelectrics. For several reasons, measurement uncertainties of up to 14% can often be observed in interlaboratory comparisons of temperature-dependent Seebeck coefficient or in error analyses on currently employed instruments. This is still too high for an industrial benchmark and insufficient for many scientific investigations and technological developments. The TESt (thermoelectric standardization) project was launched in 2011, funded by the German Federal Ministry of Education and Research (BMBF), to reduce measurement uncertainties, engineer traceable and precise thermoelectric measurement techniques for materials and TEGs, and develop reference materials (RMs) for temperature-dependent determination of the Seebeck coefficient. We report herein the successful development and qualification of cobalt-doped β-iron disilicide (β-Fe0.95Co0.05Si2) as a RM for high-temperature thermoelectric metrology. A brief survey on technological processes for manufacturing and machining of samples is presented. Focus is placed on metrological qualification of the iron disilicide, results of an international round-robin test, and final certification as a reference material in accordance with ISO-Guide 35 and the “Guide to the expression of uncertainty in measurement” by the Physikalisch-Technische Bundesanstalt, the national metrology institute of Germany.

Item URL in elib:https://elib.dlr.de/108487/
Document Type:Article
Title:Iron Disilicide as High-Temperature Reference Material for Traceable Measurements of Seebeck Coefficient Between 300 K and 800 K
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ziolkowski, PawelGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
Stiewe, ChristianGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
de Boor, JohannesGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
Druschke, InesGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
Zabrocki, KnudGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
Edler, FrankPhysikalisch-Technische Bundesanstalt (PTB), Berlin, GermanyUNSPECIFIED
Haupt, SebastianPhysikalisch-Technische Bundesanstalt (PTB), Berlin, GermanyUNSPECIFIED
König, JanFraunhofer Institute of Physical Measurement Techniques (IPM), Freiburg, 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:1 September 2016
Journal or Publication Title:Journal of Electronic Materials
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1007/s11664-016-4850-5
Page Range:01-13
Publisher:Springer
ISSN:0361-5235
Status:Published
Keywords:Seebeck coefficient, Reference material, Standardization, Uncertainty Budget, Certification, Iron disilicide
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Turbine Technologies
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Thermoelectric Materials and Systems
Deposited By: Yasseri, Mohammad
Deposited On:29 Nov 2016 13:19
Last Modified:10 Jan 2019 15:09

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