Microwave assisted synthesis properties of nano HA-TCP biphasic calcium phosphate

摘要

Biphasic calcium phosphate(BCP) nanopowders were synthesized by using microwave and non-microwave irradiation assisted processes.The synthesized powders were pressed under a pressure of 90 MPa,and then were sintered at 1000-1200°C for 1 h.The mechanical properties of the samples were investigated.The formed phases and microstructures were characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM).The results showed that the synthesis time was shorter,along with a more homogeneous microstructure,when the microwave irradiation assisted method was applied.The compression strength and the Young's modulus of the samples synthesized with microwave irradiation were about 60 MPa and 3 GPa,but those of the samples synthesized without microwave irradiation were about 30 MPa and 2 GPa,respectively.XRD patterns of the microwave irradiation assisted and non-microwave irradiation assisted nanopowders showed the coexistence of hydroxyapatite(HA) and tricalcium phosphate(TCP) phases in the system.