Investigation of powdering ductile gamma U-10 wt%Mo alloy for dispersion fuels

Autor(es)

Leal Neto, R. M. ^[1] ; Rocha, C. J. ^[1] ; Urano de Carvalho, E. ^{[1, 2]} ; Riella, H. G. ^{[2, 3]} ; Durazzo, M. ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] IPEN CNEN SP, Nucl & Energy Res Inst, Sao Paulo - Brazil

^[2] Sci & Technol Brazilian Inst, Sao Paulo - Brazil

^[3] Univ Fed Santa Catarina, Dept Chem Engn, Florianopolis, SC - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF NUCLEAR MATERIALS; v. 445, n. 1-3, p. 218-223, FEB 2014.
• Citações Web of Science: 2

Resumo

This work forms part of the studies presently ongoing at Nuclear and Energy Research Institute - IPEN/CNEN-SP investigating the feasibility of powdering ductile U-10 wt%Mo alloy by hydriding-milling-dehydriding of the gamma phase (HMD). Hydriding was conducted at room temperature in. a Sievert apparatus following heat treatment activation. Hydrided pieces were fragile enough to be hand milled to the desired particle size range. Hydrogen was removed by heating the samples under high vacuum. X-ray diffraction analysis of the hydrided material showed an amorphous-like pattern that is completely reversed following dehydriding. The hydrogen content of the hydrided samples corresponds to a trihydride, i.e. (U,Mo)H-3. SEM analysis of HMD powder particles revealed equiaxial powder particles together with some plate-like particles. A hypothesis for the amorphous hydride phase formation is suggested. (C) 2013 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 07/07769-7 - Combustível nuclear com alta concentração de urânio para reatores produtores de radioisótopos/radiofármacos
• Beneficiário: Michelangelo Durazzo
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 07/50018-2 - Construcao e operacao de um sistema para o estudo da hidretacao desidretacao de materiais armazenadores de hidrogenio.
• Beneficiário: Ricardo Mendes Leal Neto
• Modalidade de apoio: Auxílio à Pesquisa - Regular