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Doctoral Thesis
DOI
https://doi.org/10.11606/T.85.2018.tde-29012018-100507
Document
Author
Full name
Giovanni de Lima Cabral Romeiro Conturbia
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2017
Supervisor
Committee
Durazzo, Michelangelo (President)
Lainetti, Paulo Ernesto de Oliveira
Lameiras, Fernando Soares
Restivo, Thomaz Augusto Guisard
Title in Portuguese
Tecnologia de fabricação de alvos de aluminetos de urânio para produção de Mo-99
Keywords in Portuguese
alvos de UAlx-Al
fabricação
Mo-99
múltiplos alvos
Abstract in Portuguese
Neste trabalho os parâmetros de fabricação de alvos de dispersão UAlx-Al foram definidos aplicando-se a tecnologia de montagem e laminação de um conjunto núcleo-moldura-revestimentos tradicionalmente adotada na fabricação de placas combustíveis usadas em reatores de pesquisa. O uso das técnicas de dilatometria e difração de raios-x com refinamento de Rietveld contribuíram para desenvolver um processamento termomecânico para controle das fases presentes no núcleo do alvo. Um método inovador que permitiu o aumento da produtividade desse tipo de alvo também foi desenvolvido com base na laminação de múltiplos núcleos. O processo de fabricação mostrou-se adequado para produção de alvos com a especificação para produção de Mo-99 no Reator Multipropósito Brasileiro (RMB).
Title in English
Fabrication technology of uranium aluminide targets for Mo-99 production
Keywords in English
fabrication
Mo-99
multiples targets
UAlx-Al targets
Abstract in English
At this work, the manufacturing parameters of uranium aluminide dispersion targets (UAlx-Al) were defined applying the picture-frame technique, traditionally adopted to manufacture fuel plates used in research reactors. The use of dilatometric and X-ray analysis supported the development of a thermomechanical processing to control the phases present in the target meat. It was also developed a method to quantify uranium aluminides phases. An innovative method that allowed to increase the productivity of this type of target was also developed based on multicore rolling. The manufacturing process proved to be suitable for the production of targets fulfilling the specification to produce Mo-99 in the Brazilian Multipurpose Reactor.
 
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Publishing Date
2018-02-05
 
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