Abstract
Reaction sintering of sodium carbaboride (NaB5C) was performed by heating compacts of mixtures of amorphous boron (B) and carbon black (C) powders (B/C molar ratio, 5/1) at 1173 K in Na vapor. The ceramics obtained from the compacts of B5/C powder mixed with a ball mill (compact density, 1.67 Mg/m3) were the composites of NaB5C (74 mass%) and unreacted B5/C (26 mass%). The bulk density and bending strength of the composite ceramics were 2.04 ± 0.03 Mg/m3 and 320.9 ± 10.4 MPa, respectively. Transmission electron microscope observation revealed that nanometer-size amorphous grains of B or C were included in the matrix of NaB5C.
Original language | English |
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Pages (from-to) | 2422-2427 |
Number of pages | 6 |
Journal | Journal of the American Ceramic Society |
Volume | 99 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2016 Jan 1 |
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry