牙科纳米氧化锆陶瓷粉体的制备  

Preparation of nanometer powder of dental zirconia ceramics

作　　者：赵克[1] 杨世源[2] 巢永烈[1] 王军霞[2] 杨争 

机构地区：[1]四川大学华西口腔医学院,610041 [2]西南科技大学材料科学与工程学院

出　　处：《实用口腔医学杂志》2002年第2期99-101,共3页Journal of Practical Stomatology

基　　金：中国博士后科学基金 (编号 :2 0 0 1 1 4 );高等学校博士学科点专项科研基金 (编号 :9845);四川省科委重点科研项目基金资助项目

摘　　要：目的 :探讨用于增韧牙科氧化铝陶瓷的纳米氧化锆陶瓷粉体的制备方法。方法 :应用沉淀法 ,比较不同前驱物浓度和 pH值等条件下 ,所制备氧化锆粉体的物理性能。 结果 :ZrOCl2 ·8H2 O浓度为 0 .3～ 0 .5mol/L、pH 8.5时 ,经 70 0℃煅烧 2h后 ,可获得性能优良、粒径约为 10 0nm的氧化锆陶瓷粉体。 结论 :选择适当的条件 ,该方法可制得粒径小、团聚少的纳米氧化锆陶瓷粉体。?Objective: To study the preparation method of nanometer powder of zirconia, which was used to toughen dental alumina ceramics. Methods: The inorganic precursors at the concentrations of 0.0155 , 0.03, 0.05, 0.1 and 0.28 mol/L were used to prepare zirconia powder via precipitation method. Ammonia water was added into the said solutions to control the pH value at 7.0, 8.5 and 9. The dried precipitation product was then calcined. The prepared zirconia powder were studied by using X ray diffraction (XRD) and scanning electron microscope (SEM). Results: The zirconia powder prepared under the condition of 0.03 0.05 mol/L concentration of inorganic precursors, pH = 8.5, and calcined at 700 ℃ for 2 h was even in size,well dispersed and well micronized. The diameter of the final powder was about 100 nm. Conclusion: With proper preparation condition, weakly agglomerated powder of zirconia in nanometer size can be obtained.

关 键 词：牙科 纳米复合陶瓷 氧化锆相变增韧 化学沉淀法 氧化铝陶瓷 

分 类 号：R783.1[医药卫生—口腔医学]