Mechanical and microstructural aspects of Si3N4-based composites
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2007
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INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 6th
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Silicon nitride based-composites have been developed with particulate addition, with a
significant increase in their mechanical properties, mainly its hardness, toughness
fracture and wear resistance. These composites can be applied in several structural
applications, such cutting tools. However the introduction of these particulates inhibits
the densification of the material, being necessary the use of hot pressing or hot isostatic
pressing. In this work samples of Si3N4-based composites were prepared, with the
addition of different proportions (15, 25 and 35% in weight) of TiC or NbC. Samples
were sintered at conventional sintering and hot pressing. The obtained bodies were
characterized through density (Archimedes method), microstructure (SEM) and
mechanical properties (fracture toughness and hardness).The results indicate that the
composites containing NbC presented better densification. However an increment in
hardness and fracture toughness was not observed, different to observed behavior in
Si3N4-TiC composites.
Como referenciar
SOUZA, R.A.; BRESSIANI, J.C.; GENOVA, L.A. Mechanical and microstructural aspects of Si3N4-based composites. In: INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 6th, Nov. 7-10, 2007, Buzios, RJ. Abstract... p. 740. Disponível em: http://repositorio.ipen.br/handle/123456789/20042. Acesso em: 20 Mar 2026.
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.