METHOD OF SATURATION OF POROUS WORK PIECES WITH METAL OXIDES Russian patent published in 2015 - IPC G21C21/02 

FIELD: power industry.

SUBSTANCE: invention can be used, for example, for producing of uranium-graphite fuel elements (TFE) or composite high-temperature materials by method of impregnation of porous materials (graphite, metals, metal oxides, etc.) with salt solutions and subsequent heat treatment. The method of saturation of porous work pieces by metal oxides includes vacuum treatment of work pieces, impregnation by metal salt solutions, drying and heat treatment. Impregnation is performed at the temperature 5÷12°C by metastable salt solution of the respective metal with urotropin, and after impregnation the porous work pieces are placed into the inert medium which is pre-heated up to 80÷95°C and held within 0.5÷1.0 hour. The inert medium is air, water, oil.

EFFECT: simplification of the process of injection of metal oxides into porous array at the expense of avoidance of use of volatile and explosive organic liquids, shortening time of the process and, respectively, energy consumption decrease.

5 cl, 3 tbl, 1 dwg