Machinability and Microstructure of SiC/h-BN Nano-Composites |
| Journal |
Materials Science Forum (Volume 569) |
| Volume |
Eco-Materials Processing and Design IX |
| Edited by |
Byungsei Jun, Hyungsun Kim, Chanwon Lee, Soo Wohn Lee |
| Pages |
45-48 |
| DOI |
10.4028/www.scientific.net/MSF.569.45 |
| Online since |
January, 2008 |
| Authors |
Hai Yun Jin,
Guan Jun Qiao,
Zong Ren Peng,
Ji Qiang Gao
|
| Keywords |
h-BN, Machinability, Microstructure, Nanocomposite, Silicon Carbide (SiC) |
| Abstract |
SiC particles coated with nano-BN were synthesized and the machinable SiC/BN ceramic
nano-composites were fabricated by Plasma Active Sintering (PAS) in N2 atmosphere. The existing
and distribution of h-BN phase were revealed by X-ray diffraction (XRD), and SEM. For the existing
of weak interface between h-BN and SiC grains, the machinability of both SiC/BN micro-composites
and nano-composites were improved obviously. Because the nano-sized h-BN crystals were
homogeneously dispersed around the SiC grains of the matrix, the fracture strength of the
nano-composites was better than the SiC/h-BN micro-composite. |
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