Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-entropy garnet-based ceramic solidified body and preparation method thereof
The chemical formula of the high-entropy garnet-based ceramic solidified body is Y < 0.6 > Gd < 0.6 > Sm < 0.6 > Eu < 0.6 > Dy < 0.6 > Fe < 5 > O < 12 >, the crystal grain size is 0.50-0.75 mu m, and the density is greater than 99%. The preparation method comprises the following steps: mixing and ball-milling oxide powder, drying, sintering by using a discharge plasma sintering furnace, and annealing to obtain the high-entropy garnet-based ceramic solidified body. According to the invention, four simulated nuclides are successfully subjected to solid solution in the high-entropy garnet, the high-entropy garnet-based ceramic solidified body Y < 0.6 > Gd < 0.6 > Sm < 0.6 > Eu < 0.6 > Dy < 0.6 > Fe < 5 > O < 12 > is prepared, and simultaneous solidification of a plurality of different types of nuclides is realized. The prepared high-entropy garnet-based ceramic solidified body is fine and uniform in crystal grain, high in density, excellent in chemical stability and low in nuclide leaching rate. Besides, a spark plasma sintering furnace is adopted for sintering, the high-entropy garnet-based ceramic solidified body can be rapidly prepared at low temperature, the problem that a traditional solid-phase sintering method needs high sintering temperature and long sintering time is solved, and the production cost is reduced.
本发明公开了一种高熵石榴石基陶瓷固化体，其化学式为Y0.6Gd0.6Sm0.6Eu0.6Dy0.6Fe5O12，晶体粒径为0.50～0.75μm，致密度大于99％。其制备方法为：将氧化物粉体混合球磨，干燥后利用放电等离子体烧结炉烧结，然后退火，得到高熵石榴石基陶瓷固化体。本发明将四种模拟核素成功固溶到高熵石榴石中，制备了高熵石榴石基陶瓷固化体Y0.6Gd0.6Sm0.6Eu0.6Dy0.6Fe5O12，实现了多种不同种类的核素的同时固化。本发明制备的高熵石榴石基陶瓷固化体晶粒细小均匀，致密度高，同时其还具有优异的化学稳定性，核素浸出率低。此外，本发明烧结采用放电等离子烧结炉，能够低温快速制备得到高熵石榴石基陶瓷固化体，避免了传统的固相烧结法需要较高的烧结温度和较长的烧结时间的问题，降低了生产成本。
High-entropy garnet-based ceramic solidified body and preparation method thereof
The chemical formula of the high-entropy garnet-based ceramic solidified body is Y < 0.6 > Gd < 0.6 > Sm < 0.6 > Eu < 0.6 > Dy < 0.6 > Fe < 5 > O < 12 >, the crystal grain size is 0.50-0.75 mu m, and the density is greater than 99%. The preparation method comprises the following steps: mixing and ball-milling oxide powder, drying, sintering by using a discharge plasma sintering furnace, and annealing to obtain the high-entropy garnet-based ceramic solidified body. According to the invention, four simulated nuclides are successfully subjected to solid solution in the high-entropy garnet, the high-entropy garnet-based ceramic solidified body Y < 0.6 > Gd < 0.6 > Sm < 0.6 > Eu < 0.6 > Dy < 0.6 > Fe < 5 > O < 12 > is prepared, and simultaneous solidification of a plurality of different types of nuclides is realized. The prepared high-entropy garnet-based ceramic solidified body is fine and uniform in crystal grain, high in density, excellent in chemical stability and low in nuclide leaching rate. Besides, a spark plasma sintering furnace is adopted for sintering, the high-entropy garnet-based ceramic solidified body can be rapidly prepared at low temperature, the problem that a traditional solid-phase sintering method needs high sintering temperature and long sintering time is solved, and the production cost is reduced.
本发明公开了一种高熵石榴石基陶瓷固化体，其化学式为Y0.6Gd0.6Sm0.6Eu0.6Dy0.6Fe5O12，晶体粒径为0.50～0.75μm，致密度大于99％。其制备方法为：将氧化物粉体混合球磨，干燥后利用放电等离子体烧结炉烧结，然后退火，得到高熵石榴石基陶瓷固化体。本发明将四种模拟核素成功固溶到高熵石榴石中，制备了高熵石榴石基陶瓷固化体Y0.6Gd0.6Sm0.6Eu0.6Dy0.6Fe5O12，实现了多种不同种类的核素的同时固化。本发明制备的高熵石榴石基陶瓷固化体晶粒细小均匀，致密度高，同时其还具有优异的化学稳定性，核素浸出率低。此外，本发明烧结采用放电等离子烧结炉，能够低温快速制备得到高熵石榴石基陶瓷固化体，避免了传统的固相烧结法需要较高的烧结温度和较长的烧结时间的问题，降低了生产成本。
High-entropy garnet-based ceramic solidified body and preparation method thereof
一种高熵石榴石基陶瓷固化体及其制备方法
DUAN TAO (Autor:in) / ZHANG SHENGTAI (Autor:in) / LIAO YILIAO (Autor:in) / GE YONG (Autor:in)
29.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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