Liquid-phase sintered silicon carbide based ceramics with AIN-Ysub(2)Osub(3) and AiN-Lasub(2)Osub(3)
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Ceramic Materials and Components Engines
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Microstructure development and phase formation
processes during sintering of silicon carbide based
materials with 10 vol.% of AIN - Y2O;, or AIN - LazOz
sintering additives were investigated. Densification of
the materials occurred by liquid-phase sintering
mechanism. Ratio of @- and B-SiC powders in the
initial mixtures was a variable parameter. Shrinkage
behavior during sintering was shown to strongly depend
both on the combination of sintering additives and on
the sintering atmosphere used. Kinetics of B-SiC to aSiC phase transformation under conditions of postsintering heat treatment at 1900-1950°C was studied, the
degree of transformation determined by quantitative xray analysis. Evolution of microstructure resulting from
B to a phase transformation was followed up by
scanning electron microscopy. Transformationcontrolled grain growth mechanism similar to the one
observed for silicon nitride based ceramics was
established. Possibility of in-situ platelet reinforced
dense SiC-based ceramics fabrication by means of
sintering was Shown.
Como referenciar
IZHEVSKYI, V.A.; GENOVA, L.A.; BRESSIANI, A.H.A.; BRESSIANI, J.C. Liquid-phase sintered silicon carbide based ceramics with AIN-Ysub(2)Osub(3) and AiN-Lasub(2)Osub(3). In: HEINRICH, J.C. (ed.); ALDINGER, F. (ed.). Ceramic Materials and Components Engines. p. 593-598. DOI: 10.1002/9783527612765.c101. Disponível em: http://repositorio.ipen.br/handle/123456789/23050. 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.