Tetragonal ZrO<,2>-3 mol% Y<,2>O<,3> (3Y-TZP) coated with CePO<,4>was synthesized by a co-precipitation method and the effects of CePO<,4> content and sintering temperature on its mechanical properties were investigated. The microstructure and phase composition of the products were characterized using scanning and transmission electron microscopy as well as X-ray diffraction, respectively. The machinability index of CePO<,4>-coated zirconia was calculated to be 1.05 when the CePO<,4> content is 25 wt.%. The sample hardness, bending strength and fracture toughness are 7.08 GPa, 457.85 MPa and 9.75 MPa.m<'1/2>, respectively, when the sintering temperature is 1400℃, The results show that as-prepared CePO<,4>-coated 3Y-TZP ceramics are highly suitable biomaterials for dental applications and are expected to be used in a com- puter-aided design and computer-aided manufacturing (CAD/CAM) system to make dental crowns or bridge prostheses in a one-step sinter- ing process.
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