Preparation of CePO_4-coated zirconia ceramics and their mechanical behavior

作     者：ZI Wei SU Cunping LIN Yuanhua WANG Yong DENG Xuliang 

作者机构：Department of VIP Dental Service Peking University School and Hospital of Stomatology Beijing 100081 China Department of Materials Science and Engineering Tsinghua University Beijing 100084 China Jiamusi University School and Hospital of Stomatology Heilongjiang Jiamusi 154002 China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2011年第30卷第3期

页      面：282-286页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National High-Technology Research and Development Program of China (No.2009AA03Z422) 

主　　题：ceramic materials zirconia machinability X-ray analysis biomedical engineering 

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.