Thermoelectric properties of CVD boron carbide

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · American Ceramic Society Bulletin; (United States)

OSTI ID:6997336

Koumoto, Kunihito ^[1]

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1. Nagoya Univ. (Japan). Dept. of Applied Chemistry

Boron carbide is expected to be applied to high-temperature thermoelectric energy conversion because it shows low thermal conductivity--caused by its unique crystal structure--as well as comparatively large thermoelectric power. In the present study, thick and dense polycrystals of boron carbide with various compositions were prepared by a thermal chemical vapor deposition (CVD) method, and their thermoelectric properties were systematically measured. As a consequence, slightly different results with regard to the composition dependence of thermoelectric properties and the conduction mechanism were obtained. A significant effect of microstructure on the Seebeck coefficient of B[sub 4]C also was found.

• OSTI ID: 6997336
• Journal Information: American Ceramic Society Bulletin; (United States), Journal Name: American Ceramic Society Bulletin; (United States) Vol. 73:10; ISSN 0002-7812; ISSN ACSBA7
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300304 -- Thermoelectric Generators-- Applications
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
BORON CARBIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHEMICAL COATING
CHEMICAL COMPOSITION
CHEMICAL VAPOR DEPOSITION
DATA
DEPOSITION
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
HALL EFFECT
INFORMATION
LATTICE PARAMETERS
NESDPS Office of Nuclear Energy Space and Defense Power Systems
NUMERICAL DATA
PHYSICAL PROPERTIES
SEEBECK EFFECT
SURFACE COATING
THERMOELECTRIC PROPERTIES