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Synthesis of p-type Mg2Si1-xSnx with x = 0-1 and optimization of the synthesis parameters

Kamila, Hasbuna and Sankhla, Aryan and Yasseri, Mohammad and Pham, Ngan Hoang and Farahi, Nader and Müller, Eckhard and de Boor, Johannes (2019) Synthesis of p-type Mg2Si1-xSnx with x = 0-1 and optimization of the synthesis parameters. Materials Today: Proceedings. DOI: 10.1016/j.matpr.2019.02.052 ISSN 2214-7853

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Abstract

Mg2Si is a promising thermoelectric material in the mid-temperature region 500 – 800 K. Development of Mg2Si based thermoelectric generators requires both good n- and p-type materials. While the thermoelectric properties n-type Mg2(Si,Sn) materials are good, those of the corresponding p-type are not as much. Therefore, optimizing p-type solid solution of magnesium silicide and magnesium stannide is highly desired. We employ high energy ball milling for efficient synthesis of p-type Mg2(Si,Sn) and investigate the effect of milling time, sintering temperature, and holding time on the thermoelectric properties of p-type Mg2Si1-xSnx with x = 0-1. We can show the synthesis of p-type Mg2(Si,Sn) for the whole compositions using Li as a dopant. We have also studied the effect of the synthesis parameters (milling time, sintering temperature, and holding time) on the phase purity, functional homogeneity and thermoelectric properties. The phase purity increases with longer milling time. The functional homogeneity decreases with higher sintering temperature and longer holding time. The optimum synthesis condition for x = 0.6 leads to zTmax0.6 at 700 K, which is one of the highest value reported for p-type Mg2(Si,Sn).

Item URL in elib:https://elib.dlr.de/130541/
Document Type:Article
Title:Synthesis of p-type Mg2Si1-xSnx with x = 0-1 and optimization of the synthesis parameters
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kamila, HasbunaGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
Sankhla, Aryangerman aerospace center, institute of materials research, köln, germanyhttps://orcid.org/0000-0002-1527-6902
Yasseri, MohammadGerman aerospace center, Institute of materials research, Köln, Germany and Justus Liebig university Giessen, Institute of inorganic and analytical chemistry, 35392 Giessen, GermanyUNSPECIFIED
Pham, Ngan HoangGerman aerospace center, institute of materials research, köln, germanyUNSPECIFIED
Farahi, NaderGerman aerospace center, Institute of materials research, Köln, GermanyUNSPECIFIED
Müller, EckhardGerman aerospace center, Institute of materials research, Köln, Germany and Institute for inorganic and analytical chemistry, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 58, 35392 Gießen, GermanyUNSPECIFIED
de Boor, JohannesGerman aerospace center, institute of materials research, köln, germanyhttps://orcid.org/0000-0002-1868-3167
Date:4 April 2019
Journal or Publication Title:Materials Today: Proceedings
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.1016/j.matpr.2019.02.052
ISSN:2214-7853
Status:Published
Keywords:p-type magnesium silicide; high energy mechanical alloying; synthesis parameters
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - NGC Antriebssystem und Energiemanagement
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Thermoelectric Materials and Systems
Deposited By: Yasseri, Mohammad
Deposited On:14 Nov 2019 17:37
Last Modified:04 Apr 2020 03:00

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