Volatilization Associated with the Sintering of Polyphase Si3N4 Materials |
| |
| Authors: | F. F. Lange |
| |
| Affiliation: | Structural Ceramics Group, Rockwell International Science Center, Thousand Oaks, California 91360 |
| |
| Abstract: | Weight loss which occurs while sintering composited Si3N4 powders requires the loss of one or more of the end-member constituents through a volatilization reaction. By plotting the direction of the compositional change on the appropriate equivalence phase diagram, the principal volatilization reaction can be determined. For a particular composition in the system Si-Y-N-O sintered at 1750°C, the principal volatilization reaction was Si3N4(s) +3SiO2(s)→6SiO(g) +2N2(g). |
| |
| Keywords: | |
|
|
