首页>
外国专利>
Uranium-containing nuclear fuel sintered body, nuclear reactor fuel assembly having uranium-containing nuclear fuel sintered body, and method for treating uranium-containing nuclear fuel sintered body
Uranium-containing nuclear fuel sintered body, nuclear reactor fuel assembly having uranium-containing nuclear fuel sintered body, and method for treating uranium-containing nuclear fuel sintered body
展开▼
机译：含铀核燃料烧结体，具有含铀核燃料烧结体的核反应堆燃料组件以及处理含铀核燃料烧结体的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A uranium-containing nuclear-fuel sintered pellet containing UO2, (U, Pu)O2, (U, Th)O2, (U, RE)O2, (U, Pu, Th)O2, (U, Pu, RE)O2, (U, Th, RE)O2 or (U, Pu, Th, RE)O2, wherein RE=rare earth, has a sintered-pellet surface layer being formed of at least 80% by volume of a chemical boron compound UBx or (U, . . . )Bx, wherein x=2;4;6 or 12, and a remainder of the sintered pellet containing at most 5% by volume of the chemical boron compound. A nuclear-reactor fuel assembly has a fuel rod containing such a uranium-containing nuclear-fuel sintered pellet in a cladding tube with the boron as a burnable absorber for thermal neutrons. The surface layer having the chemical boron compound is obtained by treating the nuclear-fuel sintered pellet with boron or a boron-containing chemical compound at an appropriately high treatment temperature.
展开▼
