The apparent transition temperature (Tc) and enthalpy (ΔH) of monoclinic (P21/b) ↔ hexagonal (P63/m) reversible phase transition in stoichiometric (Ca/P = 5/3) hydroxyapatite were investigated as a function of heating/cooling rate by means of a differential scanning calorimeter (DSC), in the heating/cooling rate range of 0.5-3.0 K/min. The apparent Tc value slightly increased and decreased with increasing heating and cooling rates, respectively, while the apparent ΔH value was almost same within the experimental error.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Physical and Theoretical Chemistry