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Thermoelectric properties of chromium disilicide prepared by mechanical alloying

hal.structure.identifierMaterials Research Centre
dc.contributor.authorPERUMAL, S.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGORSSE, Stéphane
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorAIL, Ujwala
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPRAKASAM, Mythili
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHEVALIER, Bernard
hal.structure.identifierMaterials Research Centre
dc.contributor.authorUMARJI, Arun M.
dc.date.issued2013
dc.identifier.issn0022-2461
dc.description.abstractEnCrSi and Cr1−x Fe x Si particles embedded in a CrSi2 matrix have been prepared by hot pressing from CrSi1.9, CrSi2, and CrSi2.1 powders produced by ball milling using either WC or stainless steel milling media. The samples were characterized by powder X-ray diffraction, scanning, and transmission electron microscopy and electron microprobe analysis. The final crystallite size of CrSi2 obtained from the XRD patterns is about 40 and 80 nm for SS- and WC-milled powders, respectively, whereas the size of the second phase inclusions in the hot pressed samples is about 1-5 μm. The temperature dependence of the electrical resistivity, Seebeck coefficient, thermal conductivity, and figure of merit (ZT) were analyzed in the temperature range from 300 to 800 K. While the ball-milling process results in a lower electrical resistivity and thermal conductivity due to the presence of the inclusions and the refinement of the matrix microstructure, respectively, the Seebeck coefficient is negatively affected by the formation of the inclusions which leads to a modest improvement of ZT.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subject.enThermoelectric properties
dc.subject.enChromium disilicide
dc.subject.enMechanical alloying
dc.title.enThermoelectric properties of chromium disilicide prepared by mechanical alloying
dc.typeArticle de revue
dc.identifier.doi10.1007/s10853-013-7398-2
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Materials Science
bordeaux.page6018-6024
bordeaux.volume48
bordeaux.issue17
bordeaux.peerReviewedoui
hal.identifierhal-00848463
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00848463v1
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