Preparation of CePO4-coated zirconia ceramics and their mechanical behavior
来源期刊：Rare Metals2011年第3期
论文作者：ZI Weia, b, SU Cunpingc, LIN Yuanhuab, WANG Yonga, and DENG Xulianga a Department of VIP Dental Service, Peking University School and Hospital of Stomatology, Beijing , China b Department of Materials Science and Engineering, Tsinghua University, Beijing , China c Jiamusi University School and Hospital of Stomatology, Heilongjiang, Jiamusi , China
文章页码：282 - 286
摘 要：Tetragonal ZrO2-3 mol% Y2O3 （3Y-TZP） coated with CePO4 was synthesized by a co-precipitation method and the effects of CePO4 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 CePO4-coated zirconia was calculated to be 1.05 when the CePO4 content is 25 wt.%. The sample hardness, bending strength and fracture toughness are 7.08 GPa, 457.85 MPa and 9.75 MPa m1/2, respectively, when the sintering temperature is 1400°C. The results show that as-prepared CePO4-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.
ZI Weia, b, SU Cunpingc, LIN Yuanhuab, WANG Yonga, and DENG Xulianga a Department of VIP Dental Service, Peking University School and Hospital of Stomatology, Beijing 100081, China b Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China c Jiamusi University School and Hospital of Stomatology, Heilongjiang, Jiamusi 154002, China
摘 要：Tetragonal ZrO2-3 mol% Y2O3 （3Y-TZP） coated with CePO4 was synthesized by a co-precipitation method and the effects of CePO4 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 CePO4-coated zirconia was calculated to be 1.05 when the CePO4 content is 25 wt.%. The sample hardness, bending strength and fracture toughness are 7.08 GPa, 457.85 MPa and 9.75 MPa m1/2, respectively, when the sintering temperature is 1400°C. The results show that as-prepared CePO4-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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