华西口腔医学杂志2012，Vol.30Issue(1)：73-76,4.DOI:10.3969/j.issn.1000-1182.2012.01.018
稀土氧化物着色牙色四方多晶氧化锆陶瓷的机械性能研究
Mechanical property of tooth-like yttria-stabilized tetragonal zirconia polycrystal by adding rare earth oxide
摘要
Abstract
Objective To evaluate the influence of mechanical property of tooth-like yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) by adding rare earth oxide as colorants. Methods Six kinds of tooth-like Y-TZP were made by introducing internal coloration technology. The colorants included rare earth oxide (Pr6O11, CeO2, Er2O3) and transition element oxide (MnO2). Mechanical properties (flexural strength, vickers hardness and fracture toughness) were tested. Microstructure was examined by scanning electron microscope (SEM), and the fracture model was analyzed. Results The range of flexural strength of the six kinds of tooth-like Y-TZP were (792±20)- (960+17) Mpa, the fracture toughness were (4.72±0.31)-(5.64±0.38) MPam1/2, and the vickers hardness were (1 332±19)-(1 380±17) Mpa. SEM observation on the cross section of the six kinds of sintered composites showed a relatively dense polycrystal structure, and the fracture models was mixed type. Conclusion Tooth-like Y-TZP is acquired with better mechanical properties (fracture toughness and vickers hardness) by adding rare earth oxide as colorants. It is available for clinical application.关键词
氧化锆/稀土氧化物/机械性能/显微结构Key words
zirconia/ rare earth oxide/ mechanical property/ microstructure分类
医药卫生引用本文复制引用
高燕,张富强,高建华..稀土氧化物着色牙色四方多晶氧化锆陶瓷的机械性能研究[J].华西口腔医学杂志,2012,30(1):73-76,4.基金项目
上海市科学技术委员会生物医药重点基金资助项目(09-411954600) （09-411954600）
上海高校选拔培养优秀青年教师科研专项基金资助项目(jdy09046) （jdy09046）
