High thermal conductivity of spark plasma sintered silicon carbide ceramics with yttria and scandia

A fully dense SiC ceramic with a room‐temperature thermal conductivity of 262 W·(m·K)−1 was obtained via spark plasma sintering β‐SiC powder containing 0.79 vol% Y2O3‐Sc2O3. High‐resolution transmission electron microscopy revealed two different SiC‐SiC boundaries, that is, amorphous and clean bound...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the American Ceramic Society 2017-04, Vol.100 (4), p.1290-1294
Main Authors: Seo, Yu‐Kwang, Kim, Young‐Wook, Nishimura, Toshiyuki, Seo, Won‐Seon
Format: Article
Language:English
Subjects:
Boundaries
Ceramics
Conductivity
Crystallization
Heat transfer
Microscopy
Oxygen content
Plasma sintering
Silicon carbide
spark plasma sintering
Thermal conductivity
Transmission electron microscopy
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A fully dense SiC ceramic with a room‐temperature thermal conductivity of 262 W·(m·K)−1 was obtained via spark plasma sintering β‐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.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.14748