Table 1.
Exp. | Mixture composition | Cooling rate |
---|---|---|
E1 | M1—stoichiometric 89.33wt.% Ca3(PO4)2 | ~10 °C min−1 |
E2 | M2—80wt.% Ca3(PO4)2 (rich in solute) | ~10 °C min−1 |
E3 | M3—25wt.% Ca3(PO4)2 (rich in flux) | ~10 °C min−1 |
E4 | M3—25wt.% Ca3(PO4)2 (rich in flux) | Slow cooling (1 °C min−1) |
E5 | M3—25wt.% Ca3(PO4)2 (rich in flux) | Quenching in air |
E6 | Starting: M3 25wt.% Ca3(PO4)2 (rich in flux) After firing 4 h: solute was added to achieve stoichiometric mixture |
Quenching in air (after changing the composition ‘in situ’ at 1,100 °C) |