Abstract
Si3N4 ceramics with V2O5 based glasses as sintering additives were successfully fabricated by a powder mixing process and rapid sintering by the PECS method. The fabricated materials by Pulsed Electric Current Sintering (PECS) exhibited very fine microstructure with a and β grains. Electric conductivity for the Si3N 4/(V2O5-B2O3) and the Si3N4/(V2O5-B2O 3-Al2O3) at room temperature were four and six orders of magnitude higher at room temperature, and two and three orders of magnitude higher at 1000°C than the conventional Si3N4 respectively.
Original language | English |
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Pages (from-to) | 645-648 |
Number of pages | 4 |
Journal | Key Engineering Materials |
Volume | 317-318 |
Publication status | Published - 2006 |
Externally published | Yes |
Keywords
- Electrical conductivity
- Glassy grain boundary phase
- Powder metallurgical process
- Silicon nitride
- VO-based glass
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering