Study of a metal-organic composite (Wx%Lig) for the gamma radiation attenuation
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2018
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Research & Reviews: Journal of Material Sciences
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The objective of this work was to use tungsten and lignin as
precursors to produce a metal-organic composite (Wx%Lig) using
different sintering processes. Tungsten is a refractory metal and was
selected for the composite due to its superior physical and mechanical
properties (mechanical strength, high melting point, and excellent cross
section with thermal neutrons). Its choice is also justified because it
is widely used for high-energy radiation shielding. Lignin extracted
from lignocellulosic biomass was selected to be the organic precursor
for the composite because it has multiple applications; it is used
in the production of aromatics, adhesives, and as a phenolic resin
replacement. Analysis of the composite was performed after sintering
processes using a Nexview 3D optical surface profiler and analyse the
gamma radiation attenuation coefficient using cobalt source (Co-60).
Metal-organic composites in ratios of W5%Lig and W2.5%Lig were
produced after different heat treatment processes. Then, the gamma
attenuation coefficients of the composite samples in these rations were
analysing. The gradient of the attenuation coefficient differed when
standard tungsten and the composites of W5%Lig and W2.5%Lig were
compared with free source Co-60.
Como referenciar
SOUZA, ARMANDO C. de; ROSSI, JESUALDO L.; CIONE, FRANCISCO C.; MACHADO, NOE G.P.; SILVA, ALINE C. da; SILVA, WALLACE F. da. Study of a metal-organic composite (Wx%Lig) for the gamma radiation attenuation. Research & Reviews: Journal of Material Sciences, v. 6, n. 4, p. 238-243, 2018. DOI: 10.4172/2321-6212.1000239. Disponível em: http://repositorio.ipen.br/handle/123456789/30074. Acesso em: 15 Mar 2025.
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