Preparation of Amorphous Si-B-C-N Powders and Nano-Sized Ceramics
Amorphous nano-sized silicoboron carbonitride (Si-B-C-N) powders with average grain size <50 nm were fabricated by high energy shaker mill using hexagonal boron nitride, graphite and amorphous silicon powders as starting materials. The powders were consolidated by spark plasma sintering at 1900° and 1950°C. Amorphous phase were partially retained in ceramic sintered at 1900°C. For ceramic sintered at 1950°C, amorphous Si-B-C-N ceramic transferred to hexagonal BN and cubic SiC.
Wei Pan and Jianghong Gong
Z. H. Yang et al., "Preparation of Amorphous Si-B-C-N Powders and Nano-Sized Ceramics", Key Engineering Materials, Vols. 336-338, pp. 1218-1220, 2007