Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 100, Issue 4, Pages 1290-1294Publisher
WILEY
DOI: 10.1111/jace.14748
Keywords
silicon carbide; spark plasma sintering; thermal conductivity
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Funding
- National Research Foundation of Korea (NRF)
- Korean Government (MSIP) [2015R1A2A2A01004860]
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A fully dense SiC ceramic with a room-temperature thermal conductivity of 262 W(mK)(-1) was obtained via spark plasma sintering -SiC powder containing 0.79 vol% Y2O3-Sc2O3. High-resolution transmission electron microscopy revealed two different SiC-SiC boundaries, that is, amorphous and clean boundaries, in addition to a fully crystallized junction phase. A high thermal conductivity was attributed to a low lattice oxygen content and the presence of clean SiC-SiC boundaries.
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