摘要：

This paper describes results related to the manufacturing of dispersion type fuel miniplates using UMo powder obtained by means of centrifugal atomization using Rotating Electrode Process REP. Atomization tests were performed at CCHEN with cylindrical pins made of U-7wt% Mo. The morphology of the particles, predominantly spherical, was revealed through Scanning Electron Microscopy. A batch of six miniplates with uranium densities of 6.0 – 7.0 and 8.0 gU/cm 3 , was fabricated and inspected according to international specifications. Industrial radiography was applied to evaluate defects in the fuel core (meat), besides metrology and homogeneity in the distribution of UMo particles. Defects such as fishtail and stray particles, and thickening of the meat in the edges were observed in the highest density miniplates. Blister and bend tests were used to evaluate the meat/cladding bonding. Meat and cladding thickness was measured by metallographic inspections and SEM, and also for the inspection of the meat/cladding bonding and fuel/matrix IL formation.

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