Thermal conductivity and specific heat of boron carbides

We present measurements of the thermal conductivity (30 < T < 300 K) and specific heat (80 < T < 300 K) of polycrystalline boron carbides (B 1- x C x ) for carbon concentrations spanning the single-phase field (0.1 < × < 0.2) and compare our results with studies in other temperatur...

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Bibliographic Details
Published inJournal of alloys and compounds Vol. 203; pp. 67 - 75
Main Authors Medwick, P.A., Fischer, H.E., Pohl, R.O.
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 04.01.1994
Elsevier
Subjects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electrical and thermal conduction in crystalline metals and alloys
Electronic conduction in metals and alloys
Electronic transport in condensed matter
Exact sciences and technology
Physics
Thermal properties
Specific heat
Quantity ratio
Temperature effects
Polycrystals
Thermal conductivity
Thermal diffusivity
Experimental study
Boron carbides
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Summary:We present measurements of the thermal conductivity (30 < T < 300 K) and specific heat (80 < T < 300 K) of polycrystalline boron carbides (B 1- x C x ) for carbon concentrations spanning the single-phase field (0.1 < × < 0.2) and compare our results with studies in other temperature regimes. The thermal conductivity decreases continuously with decreasing x as it evolves from crystalline behavior for carbon-rich specimens to a glass-like conductivity characteristic of amorphous solids. The specific heat of boron carbides is insensitive to the carbon concentration for T > 60 K.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0925-8388
1873-4669
DOI:10.1016/0925-8388(94)90716-1