A pressure-induced amorphous phase transition in magnesium-substituted beta-tricalcium phosphate

作者：Scott Paul R^*; Crow J A; LeGeros Racquel Z; Kruger M B

来源：Solid State Communications, 2011, 151(21): 1609-1611.

DOI：10.1016/j.ssc.2011.07.019

• Tricalcium phosphate
• Phase transition
• High pressure
• XRD

Synchrotron-based X-ray diffraction was used to determine the equation of state and phase transition in magnesium-substituted beta-tricalcium phosphate (beta-TCMP). It was observed that beta-TCMP undergoes a phase transformation from a rhombohedral unit cell to an amorphous structure. This pressure-induced amorphization is reversible from similar to 32 GPa under quasi-hydrostatic conditions and irreversible when quenched from similar to 57 GPa in non-hydrostatic conditions. Based upon the quasi-hydrostatic equation of state, the bulk modulus for the crystalline phase of the material was calculated to be 80.6 +/- 3.1 GPa.

• 出版日期2011-11