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Preparation method of high-sintering-activity zirconium oxide powder
The invention discloses a preparation method of high-sintering-activity zirconium oxide powder, relates to the technical field of ceramic powder preparation, and aims at solving the problems that existing zirconium oxide powder is easy to agglomerate, unstable in crystal form and not easy to sinter. The preparation method comprises the following steps: preparing basic precipitation salt containingzirconium and M by taking a zirconium inorganic salt as a main raw material and a metal M nitrate as an additive, and then performing ball milling, hydrothermal reaction and high-temperature calcination to prepare the high-dispersion tetragonal-phase zirconium oxide nano powder. The obtained white precipitate is in a non-colloidal state, contains less moisture, has small capillary force action inthe drying process, and is easy to obtain precursor powder which is less in agglomeration and loose; and through a two-step synthesis method, auxiliary agent metal ions are more easily and uniformlydissolved into crystal lattices of zirconium oxide in a solid solution manner in hydrothermal, high-pressure and low-temperature environments after dry gel is crushed and ball-milled, and the preparedzirconium oxide powder is uniform in particle and good in dispersity, and has obviously improved sintering performance compared with industrial zirconium oxide.
本发明公开一种高烧结活性氧化锆粉体的制备方法，涉及陶瓷粉体制备技术领域，基于现有的氧化锆粉体易团聚，晶型不稳定，不易烧结的问题而提出的。本发明包括以下步骤：以锆无机盐为主要原料，金属M硝酸盐为添加助剂制得含有锆和M的碱式沉淀盐，然后经过球磨、水热反应和高温煅烧制得高分散四方相的氧化锆纳米粉体。本发明所得的白色沉淀为非胶态，含水分少，干燥过程中毛细管力作用小，易于得到团聚少而疏松的前驱粉体；且通过两步合成法，干凝胶破碎球磨后水热，高压低温环境下助剂金属离子更加容易且均匀地固溶到氧化锆的晶格中，制得的氧化锆粉体颗粒均一，分散性好，相较于工业氧化锆其烧结性能得到了明显的改善。
Preparation method of high-sintering-activity zirconium oxide powder
The invention discloses a preparation method of high-sintering-activity zirconium oxide powder, relates to the technical field of ceramic powder preparation, and aims at solving the problems that existing zirconium oxide powder is easy to agglomerate, unstable in crystal form and not easy to sinter. The preparation method comprises the following steps: preparing basic precipitation salt containingzirconium and M by taking a zirconium inorganic salt as a main raw material and a metal M nitrate as an additive, and then performing ball milling, hydrothermal reaction and high-temperature calcination to prepare the high-dispersion tetragonal-phase zirconium oxide nano powder. The obtained white precipitate is in a non-colloidal state, contains less moisture, has small capillary force action inthe drying process, and is easy to obtain precursor powder which is less in agglomeration and loose; and through a two-step synthesis method, auxiliary agent metal ions are more easily and uniformlydissolved into crystal lattices of zirconium oxide in a solid solution manner in hydrothermal, high-pressure and low-temperature environments after dry gel is crushed and ball-milled, and the preparedzirconium oxide powder is uniform in particle and good in dispersity, and has obviously improved sintering performance compared with industrial zirconium oxide.
本发明公开一种高烧结活性氧化锆粉体的制备方法，涉及陶瓷粉体制备技术领域，基于现有的氧化锆粉体易团聚，晶型不稳定，不易烧结的问题而提出的。本发明包括以下步骤：以锆无机盐为主要原料，金属M硝酸盐为添加助剂制得含有锆和M的碱式沉淀盐，然后经过球磨、水热反应和高温煅烧制得高分散四方相的氧化锆纳米粉体。本发明所得的白色沉淀为非胶态，含水分少，干燥过程中毛细管力作用小，易于得到团聚少而疏松的前驱粉体；且通过两步合成法，干凝胶破碎球磨后水热，高压低温环境下助剂金属离子更加容易且均匀地固溶到氧化锆的晶格中，制得的氧化锆粉体颗粒均一，分散性好，相较于工业氧化锆其烧结性能得到了明显的改善。
Preparation method of high-sintering-activity zirconium oxide powder
一种高烧结活性氧化锆粉体的制备方法
WANG GUANGYING (author) / ZHAO YU (author) / PAN YOUCHUN (author) / ZHANG BO (author)
2021-01-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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