Analysis of the microstructural evolution of composite of Tungsten with lignin kraft
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2017
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ENCONTRO CIENTÍFICO DE FÍSICA APLICADA, 8.
Resumo
In materials science and engineering, there is a demand in new materials for radiation shielding in
the transport of radiopharmaceuticals used in the diagnosis and therapy of cancer, justifying the interest in
developing this work. The obtained lignin kraft and tungsten form the precursors used for metal-organic
composite. Tungsten metal has diverse applications in the nuclear sector presents an enormous
mechanical strength and an excellent cross section with thermal neutrons. The aim of this study is to
analyse the microstructural evolution of metal-organic composite using the kraft lignin and tungsten, using
analysis of scanning electron microscopy (SEM), microhardness test and x-ray diffraction (XRD).
Microscopic analysis showed the granulometry of the precursors separate and composite morphology,
observing the formation of alpha (α) and beta (β) phases and absence of oxidation process for different
heat treatment temperatures. The spectra of x-ray diffraction identified the structures of each phase
formed and micro hardness measures showed an increase of mechanical resistance with temperature.
The results of the microstructural characterization of metal-organic composite, will contribute in the next
steps of attenuation measurements of gamma radiation.
Como referenciar
SOUZA, A.C.; ROSSI, J.L.; FERNANDES, H.B.; GOUVEA, A.F.G. Analysis of the microstructural evolution of composite of Tungsten with lignin kraft. In: ENCONTRO CIENTÍFICO DE FÍSICA APLICADA, 8., 4-7 de setembro, 2017, Vitória, ES. Anais... São Paulo, SP: Blucher Proceedings, 2017. p. 76-78. DOI: 10.5151/phypro-viii-efa-19. Disponível em: http://repositorio.ipen.br/handle/123456789/31218. Acesso em: 28 Mar 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.