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Zircon perovskite type ceramic solidified body as well as preparation method and application thereof
The invention belongs to the technical field of high-radioactivity waste solidification treatment, and discloses a zircon perovskite type ceramic solidified body and a preparation method and application thereof. The zircon perovskite type ceramic solidified body is prepared by the following steps: adding a calcium source, a titanium source and a zirconium source into a solvent and a ball milling medium for ball milling, wherein the mass ratio of the calcium source to the titanium source to the zirconium source is (40-46): (33-37): (17-24), drying to obtain mixed powder, carrying out dry pressing molding treatment on the mixed powder, heating the obtained blank to 1250-1400 DEG C in a protective atmosphere, carrying out SPS sintering reaction, cooling to 800 DEG C, carrying out furnace cooling, and pressurizing to 20-50 MPa. The particle size of the zircon perovskite type ceramic solidified body is 2-4 [mu] m, the relative density is 95-99%, the hardness is 10-15 HV, the fracture toughness is 0.6-5 MPa.m < 1/2 >, and the bending strength is 100-150 MPa.
发明属于高放射性废物固化处理技术领域，公开了一种钙钛锆石型陶瓷固化体及其制备方法和应用。所述钙钛锆石型陶瓷固化体是将钙源、钛源和锆源加入溶剂和球磨介质进行球磨，所述钙源、钛源、锆源的质量比为(40～46)：(33～37)：(17～24)，干燥后得到混合粉体，再将混合粉体进行干压成型处理，将所得胚体在保护气氛中升温至1250～1400℃进行SPS烧结反应，降温到800℃后随炉冷却，加压20～50MPa制得。本发明的钙钛锆石型陶瓷固化体的粒径为2～4μm，相对密度为95～99％，硬度为10～15HV，断裂韧性为0.6～5MPa·m，抗弯强度为100～150MPa。
Zircon perovskite type ceramic solidified body as well as preparation method and application thereof
The invention belongs to the technical field of high-radioactivity waste solidification treatment, and discloses a zircon perovskite type ceramic solidified body and a preparation method and application thereof. The zircon perovskite type ceramic solidified body is prepared by the following steps: adding a calcium source, a titanium source and a zirconium source into a solvent and a ball milling medium for ball milling, wherein the mass ratio of the calcium source to the titanium source to the zirconium source is (40-46): (33-37): (17-24), drying to obtain mixed powder, carrying out dry pressing molding treatment on the mixed powder, heating the obtained blank to 1250-1400 DEG C in a protective atmosphere, carrying out SPS sintering reaction, cooling to 800 DEG C, carrying out furnace cooling, and pressurizing to 20-50 MPa. The particle size of the zircon perovskite type ceramic solidified body is 2-4 [mu] m, the relative density is 95-99%, the hardness is 10-15 HV, the fracture toughness is 0.6-5 MPa.m < 1/2 >, and the bending strength is 100-150 MPa.
发明属于高放射性废物固化处理技术领域，公开了一种钙钛锆石型陶瓷固化体及其制备方法和应用。所述钙钛锆石型陶瓷固化体是将钙源、钛源和锆源加入溶剂和球磨介质进行球磨，所述钙源、钛源、锆源的质量比为(40～46)：(33～37)：(17～24)，干燥后得到混合粉体，再将混合粉体进行干压成型处理，将所得胚体在保护气氛中升温至1250～1400℃进行SPS烧结反应，降温到800℃后随炉冷却，加压20～50MPa制得。本发明的钙钛锆石型陶瓷固化体的粒径为2～4μm，相对密度为95～99％，硬度为10～15HV，断裂韧性为0.6～5MPa·m，抗弯强度为100～150MPa。
Zircon perovskite type ceramic solidified body as well as preparation method and application thereof
一种钙钛锆石型陶瓷固化体及其制备方法和应用
GUO WEIMING (author) / WEI ZIJUN (author) / SUN SHIKUAN (author) / WU LIXIANG (author) / NIU WENBIN (author) / LIN HUATAI (author)
2020-04-14
Patent
Electronic Resource
Chinese
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