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Preparation method and application of gadolinium oxysulfide scintillation ceramic
The invention discloses a preparation method of gadolinium oxysulfide scintillation ceramics, which is characterized in that Gd2O2S scintillation powder is sintered and molded by one-step sintering through a vacuum hot pressing sintering or spark plasma sintering method, and gadolinium oxysulfide polycrystalline scintillation ceramic doped with at least one element of Pr, Eu, Tb, Sm, Yb and Tm is efficiently obtained. According to the method, qualified gadolinium oxysulfide scintillation ceramic can be obtained through one-time sintering, secondary sintering does not need to be carried out through a method combining SPS or uniaxial hot pressing with hot isostatic pressing, and the defects that in the current hot isostatic pressing technology, a green body needs to be sintered firstly, gadolinium oxysulfide powder metal needs a vacuum sealing technology, the cost is high, and the technological process is complex are overcome; and the production process is more energy-saving and more efficient. According to the method, the temperature rise rate, pressure, temperature and time of sintering are combined, so that the characteristics of fine grain size and high density of a gadolinium oxysulfide scintillation ceramic finished product are effectively ensured, and popularization and application are facilitated.
本发明公开了硫氧化钆闪烁陶瓷的制备方法，利用真空热压烧结或放电等离子烧结的方法一步烧结将Gd2O2S闪烁粉体烧结成型，高效率地获得Pr，Eu，Tb，Sm，Yb，Tm中的至少一种元素掺杂的硫氧化钆多晶闪烁陶瓷。本发明的方法一次烧结即可得到质量合格的硫氧化钆闪烁陶瓷，不需要以SPS或单轴热压结合热等静压的方法进行二次烧结，解决了当前热等静压技术需先烧结坯体、硫氧化钆粉末金属需要真空密封工艺、成本高及工艺过程复杂的缺陷；使生产工艺更节能、更高效。本发明将烧结的升温速率和压力、温度、时间四者相结合，有效地保证了硫氧化钆闪烁陶瓷成品的晶粒度细小，致密度高的特性，有利于推广使用。
Preparation method and application of gadolinium oxysulfide scintillation ceramic
The invention discloses a preparation method of gadolinium oxysulfide scintillation ceramics, which is characterized in that Gd2O2S scintillation powder is sintered and molded by one-step sintering through a vacuum hot pressing sintering or spark plasma sintering method, and gadolinium oxysulfide polycrystalline scintillation ceramic doped with at least one element of Pr, Eu, Tb, Sm, Yb and Tm is efficiently obtained. According to the method, qualified gadolinium oxysulfide scintillation ceramic can be obtained through one-time sintering, secondary sintering does not need to be carried out through a method combining SPS or uniaxial hot pressing with hot isostatic pressing, and the defects that in the current hot isostatic pressing technology, a green body needs to be sintered firstly, gadolinium oxysulfide powder metal needs a vacuum sealing technology, the cost is high, and the technological process is complex are overcome; and the production process is more energy-saving and more efficient. According to the method, the temperature rise rate, pressure, temperature and time of sintering are combined, so that the characteristics of fine grain size and high density of a gadolinium oxysulfide scintillation ceramic finished product are effectively ensured, and popularization and application are facilitated.
本发明公开了硫氧化钆闪烁陶瓷的制备方法，利用真空热压烧结或放电等离子烧结的方法一步烧结将Gd2O2S闪烁粉体烧结成型，高效率地获得Pr，Eu，Tb，Sm，Yb，Tm中的至少一种元素掺杂的硫氧化钆多晶闪烁陶瓷。本发明的方法一次烧结即可得到质量合格的硫氧化钆闪烁陶瓷，不需要以SPS或单轴热压结合热等静压的方法进行二次烧结，解决了当前热等静压技术需先烧结坯体、硫氧化钆粉末金属需要真空密封工艺、成本高及工艺过程复杂的缺陷；使生产工艺更节能、更高效。本发明将烧结的升温速率和压力、温度、时间四者相结合，有效地保证了硫氧化钆闪烁陶瓷成品的晶粒度细小，致密度高的特性，有利于推广使用。
Preparation method and application of gadolinium oxysulfide scintillation ceramic
一种硫氧化钆闪烁陶瓷的制备方法及其硫氧化钆闪烁陶瓷的应用
AN NING (author) / YU JINFENG (author) / DI JUQING (author)
2022-02-11
Patent
Electronic Resource
Chinese
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