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Thermal effects of HA [73].
| Temperature (°C) | Reactions |
|---|---|
| 25–200 | Evaporation of absorbed water |
| 200–600 | Evaporation of lattice water |
| 600–800 | Decarbonation |
| 800–900 | Dehydroxylation of HA to form partially or completely dehydroxylated oxyhydroxyapatite |
| 1050–1400 | HA decomposes into β-TCP and TTCP |
| <1120 | β-TCP is stable |
| 1120–1470 | β-TCP is turned into α-TCP |
| 1550 | Melting temperature of HA |
| 1630 | Melting temperature of TTCP and leaving behand CaO |
| 1730 | Melting of TCP |
