3Y-TZP/Si2N2O composite obtained by pressureless sintering
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2007
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INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 6th
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Resumo
Y-TZP presents excellent properties at room temperature but these properties decrease
as the temperature increases. This paper studies the behavior 20vol%Si3N4-SiC when added in
YTZP matrix and heated under no pressure system. Al2O3 and Y2O3 were used to maintain the
stability of the matrix and as sintering aids. The addition of Si3N4 and SiC in a Y-TZP matrix
leads to formation of silicon oxynitride and it increases the mechanical properties like toughness
and hardness. The mixture was milled and molded by CIP. Samples were heated at 1500ºC,
1600ºC and 1700ºC for 2h without pressure under atmospheric conditions in bed-powders of
Si3N4. Samples were characterized by XRD. Density, hardness, toughness, bending strength
were measured. The structure of the material was observed in SEM/EPMA to verify the
distribution of the materials in the composite. The formation of Si2N2O was observed in the
sintered material and it showed an increment of both hardness and toughness as temperature
increases. The samples presented considerable resistance of oxidation at 1000ºC.
Como referenciar
SANTOS, CARLOS A.X.; HAYAKAWA, MOTOZO; BRESSIANI, JOSE C. 3Y-TZP/Si2N2O composite obtained by pressureless sintering. In: INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 6th, November 07-10, 2007, Búzios, RJ. Proceedings... p. 714-721. Disponível em: http://repositorio.ipen.br/handle/123456789/27492. Acesso em: 30 Dec 2025.
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.