| abstract |
The invention discloses a molybdenum-based metal-ceramic nuclear fuel pellet, which comprises a molybdenum-based metal-ceramic matrix, the molybdenum-based metal-ceramic matrix has through-hole structures uniformly arranged in an array, and the inner wall of the through-hole structure has a protective layer , and the protective layer completely covers the inner wall of the through hole structure. In the present invention, a uniform layer of molybdenum-based metal coating is formed on the surface of the raw graphite rod, and it is evenly arranged in an array in the molybdenum-based cermet precursor powder. processing technology, so as to form a through hole with a molybdenum-based metal protective layer on the inner wall with a certain thickness in the fuel pellet matrix, which avoids the direct contact between the ceramic phase inside the molybdenum-based cermet matrix of the fuel pellet and the external environment, and plays a protective role. The safety and reliability of the operation of the molybdenum-based metal-ceramic nuclear fuel pellets are improved. |