摘要陶瓷材料在口腔医学的应用由来已久。近年来，随着人们对牙体美观的不断追求，全瓷修复体的发展迅速。氧化锆陶瓷材料因其高强度、高韧性的性质，在全瓷修复体材料中备受瞩目。目前，氧化锆全瓷修复体的主要成型工艺是CAD/CAM技术和手工涂塑成型技术。但是CAD/CAM技术需要计算机设备激光扫描，然后对氧化锆陶瓷块进行切削成型，设备昂贵，氧化锆瓷块和车刀损耗的成本居高不下，难以推广。粉浆涂塑较为经济，但受人为因素影响较大，力学性能难以保证。因此，成型困难是造成氧化锆全瓷修复体造价昂贵的重要因素。86795

针对这一难题，本实验通过选择纳米3Y-TZP制成高固含量、低粘度的水基悬浮液，探究电泳沉积制备氧化锆陶瓷的工艺，在齿科石膏上成型高密度的氧化锆陶瓷，并研究了氧化锆陶瓷的烧结工艺和力学性能，为氧化锆陶瓷修复支架和基底的成型研究打下坚实基础，主要研究结果如下：

(1) 低温下水浴超声分散有利于氧化锆在水中的分散。

(2) 电压对沉积层密度影响最大，电极距离、沉积时间对沉积层密度影响较小。

毕业论文关键词：电泳沉积、纳米陶瓷、钇稳定四方氧化锆、悬浮液

Abstract The application of ceramic materials in oral medicine has a long history。 All restorion develops rapidly with the continuous pursuit of beauty。 Zirconia ceramic materials with high toughness were studied and manufactured for as the all-ceramics restoration famework。 The application of zirconia ceramic restoration system was applied in clinic with the help of CAD/CAM。 However, high cost in the computer scan and manfacture system restrict its application。 Zirconia slip-casting may be more economic compared to CAD/CAM。 While the result of slip-casting method depended on the technician’s skill。 It is difficult to ensure the machanical properties。 Therefore, the formation of zirconia ceramics restoration costly is the key issue to be  considered。

According to the shortcoming of zirconia ceramic, nanometer zirconia stabilized by yttrium was chosen as origin materials。 Water based suspension with high solid composition and low viscosity was prepared, 3Y-TZP with high density were formed directly on the surface of dental plaster。 The process conditions of manufacture procedure were studied for furture research。 Some results were obtained during our research:

(1) Good dispersion throughout the slurries was obtained under the condition of low temperature water bath ultrasionic dispersion。

(2) Voltage of deposition was the major element that affected the density before sintering, while the distance between the electrode and the deposition time affected the result much slightlly。

Keywords : EPD; Nano-ceramics; Y-TZP; Suspension

目  录

第一章 绪论 1

1。1 陶瓷的发展 1

1。1。1 传统陶瓷阶段 1

1。1。2 先进陶瓷阶段 1

1。1。3 纳米陶瓷阶段 2

1。2 陶瓷材料分类 2

1。2。1 按化学成分分类 2

1。2。2 按性能和用途分类 2

1。3陶瓷材料在口腔修复中的应用 3

1。3。1长石质全瓷材料 4

1。3。2玻璃陶瓷材料 4

1。3。3氧化铝陶瓷材料 4

1。3。4氧化锆陶瓷材料