Microwave Sintering of Nano Size Powder beta-TCP Bioceramics

作者：Mirhadi B^*

来源：Science of Sintering, 2014, 46(2): 185-193.

DOI：10.2298/SOS1402185M

• Synthesis nano powder beta-TCP
• Microwave sintering
• SEM
• XRD

A nano sized beta tricalcium phosphate (beta-TCP) powder was conventional sintered (CS) and microwave sintered (MW), in order to obtain dense beta-TCP ceramics. In this work the effect of microwave sintering conditions on the microstructure, phase composition and mechanical properties of materials based on tricalcium phosphate (TCP) was investigated by SEM (scanning electron microscopy) and XRD(X-ray diffraction) and then compared with conventional sintered samples. Nano-size beta-TCP powders with average grain size of 80 nm were prepared by the wet chemical precipitation method with calcium nitrate and diammonium hydrogen phosphate as calcium and phosphorus precursors, respectively. The precipitation process employed was also found to be suitable for the production of submicrometre beta-TCP powder in situ. The beta-TCP samples microwave (MW) sintered for 15 min at 1100 degrees C, with average grain size of 3 mu m, showed better densification, higher density and certainly higher hardness than samples conventionally sintered for 2 h at the same temperature. By comparing sintered and MW sintered beta-TCP samples, it was concluded that MW sintered beta-TCP samples have superior mechanical properties.

• 出版日期2014