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Activation energy of grain growth and the coefficient of determination, R2, for the dependence of ln[(Dm(t) − Dm(t0)] on the reciprocal temperature of sintering for microwave and conventional heating.
| Method of Heating | Temperature (°C) | Activation Energy, Qa (kJ/mol)/ Coefficient of Determination, R2 | |
|---|---|---|---|
| m = 2 | m = 3 | ||
| microwave | 1570–1670 | 723/0.992 | 1056/0.994 |
| 1670–1750 | 147/0.9725 | 241/0.980 | |
| conventional | 1570–1750 | 467/0.983 | 706/0.984 |
