Preparation method of uranium zirconium alloy powder

Abstract

The invention provides a preparation method of uranium zirconium alloy powder. The preparation method sequentially includes the steps of a, washing before activation, wherein uranium zirconium alloy is placed in a diluted nitric acid solution for washing, the uranium zirconium alloy is sequentially washed through distilled water, absolute ethyl alcohol and absolute ether, and a washed sample is transferred into a reactor; b, pretreatment before activation, wherein vacuumizing, heating and temperature keeping are performed on the reactor, and then the reactor is heated continuously; c, hydrogenation and dehydrogenation treatment; d, ball-milling pretreatment after hydrogenation and dehydrogenation, wherein the reactor filled with the uranium zirconium alloy after hydrogenation and dehydrogenation treatment in the step c is transferred into a glove box, under the protection of argon, ball-milling treatment is performed, and the uranium zirconium alloy powder is obtained. According to the preparation method of the uranium zirconium alloy powder, the production cycle for uranium zirconium alloy powder preparation can be shortened, the activation process is simplified, the production cost of the uranium zirconium alloy powder is lowered, and the particle size of the uranium zirconium alloy powder can be effectively controlled.

Description

technical field [0001] The invention belongs to the technical field of nuclear material preparation, and in particular relates to a method for preparing uranium-zirconium alloy powder. The invention can be used to prepare uranium-zirconium alloy powder meeting certain grain size requirements. Background technique [0002] The pulverization process of uranium dioxide and uranium intermetallic compound materials used in the traditional nuclear energy industry has been relatively mature. Because they are generally brittle, mechanical grinding is generally used for powder preparation, but this process is difficult to be directly applied to the powder preparation of uranium-zirconium alloy fuel materials, because uranium-based alloys exhibit strong metallic properties, which The plasticity of uranium is much better than that of uranium dioxide and uranium intermetallic compound materials. With the continuous deepening of research, people have gradually proposed the hydrogenatio...

AI Technical Summary

Problems solved by technology

[0009] Through the above analysis, it can be seen that the process of preparing metal uranium powder by hydrogenation dehydrogenation method is mature, the equipment investment is small, and the impurities introduced into the powder are less; by controlling the grain size of raw materials or the number of cycles of hydrogenation dehydrogenation, different Powder material with particle size, but the production cycle is longer and the production cost is higher