The process of reactive in-situ synthesis of dense particulate reinforced TiB2/TiC and TiB2/TiN ceramic matrix composites from B4C-Ti and BN-Ti powder blends with and without the addition of Ni has been modeled. The objective of modeling was the determination of optimal thermal conditions preferable for production of fully dense ceramic matrix composites. Towards this goal heat transfer and combustion in dense and porous ceramic blends were investigated during heating at a constant rate. This process was modeled using a heat transfer-combustion model with kinetic parameters determined from the differential thermal analysis of the experimental data. The kinetic burning parameters and the model developed were further used to describe the process of combustion synthesis in a constrained die under pressure. It has been shown that heat removal from the reaction zone affects the ignition temperature of thermal explosion.
|Number of pages
|Journal of the European Ceramic Society
|Published - Oct 1999
|Proceedings of the 1998 New Developments in High Temperature Materials - Istanbul, Turkey
Duration: 12 Aug 1998 → 15 Aug 1998
- Thermal explosion