Silicon Nitride falls under Non oxide Ceramics group. This is a very important advanced structural ceramic raw material having exceptional mechanical and thermal properties. Silicon Nitride exists in two modifications
- Low temperature Alpha Form
- High temperature Beta Form
The Alpha-Beta transformation has an important contribution in the sintering process. There are 5 methods available for the production of Silicon Nitride Powder.
- Nitridation of metallic Silicon
- Vapour phase reaction of Silicon Halides with Ammonia
- Thermal Decomposition of Silicon Imide or Amide
- Carbothermic reduction of Silica
- Plasma Synthesis
To be contd….
