Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7885882 | Ceramics International | 2018 | 6 Pages |
Abstract
SiC-BN composites were fabricated by conventional hot-pressing from β-SiC and h-BN nanopowders with 2â¯vol% yttria as a sintering additive. Electrical and thermal properties of the composites were investigated as a function of initial BN content. Owing to the nanosize of the starting powders, the grain-growth-assisted N-doping of the SiC lattice was significantly enhanced during liquid-phase sintering, yielding the highest-reported electrical conductivity of ~124 (Ωâ¯cm)â1 for a SiC-4-vol% BN composite. The typical values of electrical resistivity and thermal conductivity of the SiC-4-vol% BN composite at room temperature were 8.1â¯Ãâ¯10â3 Ωâ¯cm and 92.4â¯Wâ¯mâ1 Kâ1, respectively.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Rohit Malik, Hyun-Min Kim, Young-Wook Kim, Kwang Joo Kim,