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MACHINABLE TRICALCIUM PHOSPHATE/LANTHANUM PHOSPHATE COMPOSITES

机译:可加工的磷酸钙/磷酸镧复合材料

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Tricalcium phosphate (TCP) composites with lanthanum phosphate were prepared with pressureless air sintering at 500, 700, 900, 1100 and 1300 deg C for 2 hrs. The composites were characterized in terms of phase stability during sintering, microstructural evaluation with XRD, SEM and machinability with simple drilling operation. Tricalcium phosphate and lanthanum phosphate phases were stable up to 1100 deg C. However, partial reaction forming Ca_8La_2(PO_4)_6O_2 was observed during sintering at 1300 deg C. As a result, tricalcium phosphate and lanthanum phosphate composites sintered at 1100 deg C showed phase stability insuring weak interface. Thus, these composites fulfilled the requirement for machinability.
机译:使用无压空气烧结在500,700,900,1100和1300℃下制备具有镧磷酸镧的磷酸钙(TCP)复合材料,持续2小时。复合材料以烧结期间的相位稳定性,微观结构评估与XRD,SEM和钻孔操作简单的机械性。磷酸钙和磷酸镧阶段稳定至1100℃。然而,在1300℃的烧结期间观察到部分反应形成Ca_8LA_2(PO_4)_6O_2℃,结果,在1100℃下烧结磷酸三钙和磷酸镧复合材料显示相位稳定性保险弱界面。因此,这些复合材料满足了对可加工性的要求。

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