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Preparation method of dysprosium titanate conforming to stoichiometric ratio
The invention relates to the field of reactors and the technical field of material preparation and processing, in particular to a preparation method of dysprosium titanate conforming to stoichiometric ratio, which comprises the following steps: weighing and mixing raw materials; tabletting is performed; sintering at high temperature; crushing and sintering; tabletting is performed; and secondary sintering. A dysprosium titanate ceramic sample is prepared by a high-temperature solid-phase method, Dy2O3 powder and TiO2 powder according with the stoichiometric ratio of 1: 1 are used, the neutron absorption performance is improved, the sample density is 6.393-6.833 g/cm < 3 > measured by an Archimedes drainage method, the density is 97% or above, and the main crystalline phase is a cubic phase; absolute ethyl alcohol is adopted as a ball milling medium, so that reactant powder can be mixed more uniformly under the same ball milling parameters; and a segmented sintering mode is adopted, a crystal phase is promoted to be converted into a stable cubic phase in time, and annealing performance is good.
本发明涉及反应堆领域和材料制备加工技术领域，特别涉及一种符合化学计量比的钛酸镝的制备方法，包括以下步骤：称取原料并混合；压片；高温烧结；破碎并烧结；压片；二次烧结。本发明用高温固相法制备钛酸镝陶瓷样品，使用符合化学计量比的1：1的Dy2O3粉体和TiO2粉体，提高了中子吸收性能，样品密度经阿基米德排水法测量为6.393‑6.833g/cm3，致密度均在97％以上，主要晶相为立方相；采用无水乙醇作为球磨介质，有助于反应物粉末在相同球磨参数下混合更加均匀；采用分段烧结模式，促进晶相及时转变为稳定立方相，退火表现良好。
Preparation method of dysprosium titanate conforming to stoichiometric ratio
The invention relates to the field of reactors and the technical field of material preparation and processing, in particular to a preparation method of dysprosium titanate conforming to stoichiometric ratio, which comprises the following steps: weighing and mixing raw materials; tabletting is performed; sintering at high temperature; crushing and sintering; tabletting is performed; and secondary sintering. A dysprosium titanate ceramic sample is prepared by a high-temperature solid-phase method, Dy2O3 powder and TiO2 powder according with the stoichiometric ratio of 1: 1 are used, the neutron absorption performance is improved, the sample density is 6.393-6.833 g/cm < 3 > measured by an Archimedes drainage method, the density is 97% or above, and the main crystalline phase is a cubic phase; absolute ethyl alcohol is adopted as a ball milling medium, so that reactant powder can be mixed more uniformly under the same ball milling parameters; and a segmented sintering mode is adopted, a crystal phase is promoted to be converted into a stable cubic phase in time, and annealing performance is good.
本发明涉及反应堆领域和材料制备加工技术领域，特别涉及一种符合化学计量比的钛酸镝的制备方法，包括以下步骤：称取原料并混合；压片；高温烧结；破碎并烧结；压片；二次烧结。本发明用高温固相法制备钛酸镝陶瓷样品，使用符合化学计量比的1：1的Dy2O3粉体和TiO2粉体，提高了中子吸收性能，样品密度经阿基米德排水法测量为6.393‑6.833g/cm3，致密度均在97％以上，主要晶相为立方相；采用无水乙醇作为球磨介质，有助于反应物粉末在相同球磨参数下混合更加均匀；采用分段烧结模式，促进晶相及时转变为稳定立方相，退火表现良好。
Preparation method of dysprosium titanate conforming to stoichiometric ratio
一种符合化学计量比的钛酸镝的制备方法
HU HUASHUAI (author) / YANG DONGYAN (author) / WANG JIE (author) / LIN SHAOFANG (author) / LI CHANGZHENG (author) / REN QISEN (author)
2024-09-13
Patent
Electronic Resource
Chinese
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