Research Article
The Phase-Formation Behavior of Composite Ceramic Powders Synthesized by Utilizing Rice Husk Ash from the Biomass Cogeneration Plant
Table 3
Expressions for Gibbs free energy of some net reactions.
| | Number | Product | Reaction | (kJ/mol product) | (K) |
| | (1) | Si2N2O | + + 3C(s) = Si2N2O(s) + 3CO(g) | | 1651 | | (2) | O′-Sialon | + = Si1.83Al0.17O1.17 | | — | | (3) | SiC | + 3C(s) = SiC(s) + 2CO(g) | | 1817 | | (4) | Si3N4 | 3SiO2(s) + 6C(s) + 2N2(g) = + 6CO(g) | | 1813 | | (5) | Si3N4, SiC | 2.19Si1.83Al0.17O1.17 + 3.19C(s) = Si3N4(s) + SiC(s) + 0.372AlO(g) + 2.19CO(g) | | — | | (6) | SiC | 0.33Si3 + C(s) = SiC(s) + 0.67N2(g) | | 1811 | | (7) | Ca--Sialon | CaO(s) + 1.5Al2 + + + 22.5C(s) = CaSi9Al3O + 22.5CO(g) | | 1809 |
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