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Zirconia powder and preparation method thereof
The invention relates to a zirconia powder and a preparation method thereof, and belongs to the technical field of preparation of nano ceramic materials. The preparation method comprises the following steps: (1) respectively preparing a ZrOCl2. 8H2O aqueous solution and a Ca(NO3)2 aqueous solution; (2) preparing a mixed solution according to the molar ratio of ZrO2 to Y2O3, and adding a dispersing agent; (3) adding the solution into a precipitant solution; (4) continuously generating colloids in the dropwise adding process, measuring the pH value of the mixed solution, converting the colloids into precipitates when the pH value is 7-8, and completely converting the colloids into precipitates when the pH value reaches 9-10; (5) standing the precipitate solution, performing vacuum filtration, cleaning, and drying the cleaned precipitate; and (6) grinding the precipitate in a mortar body, and calcining. The method is scientific and reasonable in design, simple and easy to operate and low in cost, and the obtained powder is high in strength, uniform in particle and better in sintering stability.
本发明涉及一种氧化锆粉体及其制备方法，属于纳米陶瓷材料制备技术领域。本发明包括：(1)分别配置ZrOCl2﹒8H2O和Ca(NO3)2水溶液；(2)按照ZrO2和Y2O3的摩尔比配置混合溶液，并加入分散剂；(3)将溶液加入到沉淀剂溶液中；(4)在滴加中不断产生胶体，测其混合溶液的pH值，在pH值为7～8时，胶体向沉淀转变，在pH到达9～10时，完全转变为沉淀；(5)将沉淀溶液静置，真空抽滤，清洗，将清洗完的沉淀干燥；(6)将沉淀置入研钵体中研磨，再经煅烧。本发明设计科学合理，操作简单易行，成本低，得到的粉体强度高、颗粒均匀，具有更加良好的烧结稳定性。
Zirconia powder and preparation method thereof
The invention relates to a zirconia powder and a preparation method thereof, and belongs to the technical field of preparation of nano ceramic materials. The preparation method comprises the following steps: (1) respectively preparing a ZrOCl2. 8H2O aqueous solution and a Ca(NO3)2 aqueous solution; (2) preparing a mixed solution according to the molar ratio of ZrO2 to Y2O3, and adding a dispersing agent; (3) adding the solution into a precipitant solution; (4) continuously generating colloids in the dropwise adding process, measuring the pH value of the mixed solution, converting the colloids into precipitates when the pH value is 7-8, and completely converting the colloids into precipitates when the pH value reaches 9-10; (5) standing the precipitate solution, performing vacuum filtration, cleaning, and drying the cleaned precipitate; and (6) grinding the precipitate in a mortar body, and calcining. The method is scientific and reasonable in design, simple and easy to operate and low in cost, and the obtained powder is high in strength, uniform in particle and better in sintering stability.
本发明涉及一种氧化锆粉体及其制备方法，属于纳米陶瓷材料制备技术领域。本发明包括：(1)分别配置ZrOCl2﹒8H2O和Ca(NO3)2水溶液；(2)按照ZrO2和Y2O3的摩尔比配置混合溶液，并加入分散剂；(3)将溶液加入到沉淀剂溶液中；(4)在滴加中不断产生胶体，测其混合溶液的pH值，在pH值为7～8时，胶体向沉淀转变，在pH到达9～10时，完全转变为沉淀；(5)将沉淀溶液静置，真空抽滤，清洗，将清洗完的沉淀干燥；(6)将沉淀置入研钵体中研磨，再经煅烧。本发明设计科学合理，操作简单易行，成本低，得到的粉体强度高、颗粒均匀，具有更加良好的烧结稳定性。
Zirconia powder and preparation method thereof
氧化锆粉体及其制备方法
YANG YAOGANG (author) / WANG DECHANG (author)
2022-01-14
Patent
Electronic Resource
Chinese
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