空间核反应堆电源用核燃料研制进展

核燃料是空间核反应堆电源的主要材料之一，由于空间核反应堆电源的运行条件明显有别于地面反应堆，空间核反应堆电源用核燃料的类型和技术要求也明显不同于地面反应堆。国际上空间核反应堆电源用核燃料研制取得了长足的进展，多种核燃料材料在工程应用中得到了检验，并在持续开发新型核燃料。我国在亚化学计量二氧化铀芯块、铀钼合金、铀氢锆合金、碳化铀芯块、氮化铀芯块等多种具备在空间堆中应用的燃料材料上开展了一定的研究，并掌握了部分材料性能数据。本文就上述内容展开论述，同时针对与国际相应领域明显落后的实际情况，提出了我国后续核燃料研究的初步设想。

Development of Nuclear Fuel for Space Power Reactor

Nuclear fuel is one of the most important materials for space power reactors. Due to its different operation conditions to ground reactors, the types of the nuclear fuel and technical requirements used for space power reactors are obviously different from those of ground reactors. The development of nuclear fuel for space power reactor in the worldwide was reviewed, and the studies of substoichiometry-UO₂ pellet, UMo alloy, U-Zr-H alloy and some other nuclear fuels that can be used for space power reactors in our country were also introduced, including some properties achieved. Some proposals for the future nuclear fuel research in China were also given.