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Zirconium oxide dental ceramic powder and preparation method thereof
The invention belongs to the technical field of zirconia ceramics, and provides zirconia dental ceramic powder and a preparation method thereof. The zirconium oxide dental ceramic powder comprises zirconium oxide, yttrium oxide and calcium oxide; the molar ratio of yttrium oxide to calcium oxide to zirconium oxide is (2-4): (13-17): 100. The preparation method comprises the following steps: adding yttrium chloride and excessive calcium chloride into a zirconium oxychloride solution, and carrying out hydrothermal synthesis in a reaction kettle to obtain zirconium oxide-based cubic polycrystalline ceramic powder; partial agglomeration is generated by controlling the powder preparation process. The zirconium oxide dental ceramic powder disclosed by the invention has relatively high calcium element content, and due to migration and non-uniform diffusion of the calcium element, the zirconium oxide ceramic prepared from the powder is large in grain size and contains pores with uniform sizes, so that the hardness of the zirconium oxide ceramic is reduced, and the service life of the zirconium oxide ceramic is prolonged. The technical problem that a zirconia ceramic restoration prepared from existing zirconia dental ceramic powder is high in hardness is solved.
本发明属于氧化锆陶瓷技术领域，本发明提供了一种氧化锆齿科陶瓷粉体及其制备方法。氧化锆齿科陶瓷粉体包含氧化锆、氧化钇和氧化钙；所述氧化钇、氧化钙和氧化锆的摩尔比为2～4：13～17：100。本发明通过向氧氯化锆溶液中加入氯化钇和过量的氯化钙，于反应釜中经水热合成氧化锆基立方多晶陶瓷粉体；通过控制粉体制备过程，产生部分团聚。本发明的氧化锆齿科陶瓷粉体具有较高的钙元素含量，因为钙元素的迁移和不均匀扩散，导致使用该粉体制备的氧化锆陶瓷晶粒尺寸大，且含有大小均匀的气孔，降低了氧化锆陶瓷的硬度，解决了现有的氧化锆齿科陶瓷粉体制备的氧化锆陶瓷修复体硬度高的技术问题。
Zirconium oxide dental ceramic powder and preparation method thereof
The invention belongs to the technical field of zirconia ceramics, and provides zirconia dental ceramic powder and a preparation method thereof. The zirconium oxide dental ceramic powder comprises zirconium oxide, yttrium oxide and calcium oxide; the molar ratio of yttrium oxide to calcium oxide to zirconium oxide is (2-4): (13-17): 100. The preparation method comprises the following steps: adding yttrium chloride and excessive calcium chloride into a zirconium oxychloride solution, and carrying out hydrothermal synthesis in a reaction kettle to obtain zirconium oxide-based cubic polycrystalline ceramic powder; partial agglomeration is generated by controlling the powder preparation process. The zirconium oxide dental ceramic powder disclosed by the invention has relatively high calcium element content, and due to migration and non-uniform diffusion of the calcium element, the zirconium oxide ceramic prepared from the powder is large in grain size and contains pores with uniform sizes, so that the hardness of the zirconium oxide ceramic is reduced, and the service life of the zirconium oxide ceramic is prolonged. The technical problem that a zirconia ceramic restoration prepared from existing zirconia dental ceramic powder is high in hardness is solved.
本发明属于氧化锆陶瓷技术领域，本发明提供了一种氧化锆齿科陶瓷粉体及其制备方法。氧化锆齿科陶瓷粉体包含氧化锆、氧化钇和氧化钙；所述氧化钇、氧化钙和氧化锆的摩尔比为2～4：13～17：100。本发明通过向氧氯化锆溶液中加入氯化钇和过量的氯化钙，于反应釜中经水热合成氧化锆基立方多晶陶瓷粉体；通过控制粉体制备过程，产生部分团聚。本发明的氧化锆齿科陶瓷粉体具有较高的钙元素含量，因为钙元素的迁移和不均匀扩散，导致使用该粉体制备的氧化锆陶瓷晶粒尺寸大，且含有大小均匀的气孔，降低了氧化锆陶瓷的硬度，解决了现有的氧化锆齿科陶瓷粉体制备的氧化锆陶瓷修复体硬度高的技术问题。
Zirconium oxide dental ceramic powder and preparation method thereof
一种氧化锆齿科陶瓷粉体及其制备方法
SUN YUCHUN (author) / WANG XIANG (author) / ZHOU YONGSHENG (author) / LI WEIWEI (author) / CHEN HU (author) / ZHAI WENRU (author)
2024-06-25
Patent
Electronic Resource
Chinese
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