Influence of addition of polysiloxane on sintering
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Materials Science Forum
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The effects of adding polysiloxane (polymethylsilsesquioxane) on the sintering behavior,
microstructure and hardness of alumina ceramics have been studied. The sintering kinetics of coldpressed
specimens was studied by dilatometry. Polymer sintering aid was used for alumina based
ceramics sintered at 1650º C. The sintered materials were characterized using helium picnometry,
x-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, energy
dispersive x-ray spectrometry and Vickers indentation. The addition of polymethylsilsesquioxane
yielded alumina/Si2Al4O4N4 composites. The sintering studies in nitrogen atmosphere (1650 °C/1h)
revealed that the highest densities were obtained for specimens with 1wt% PMS. The materials
prepared with ceramic polymer precursors had higher hardness than the standard specimen. The
preparation of ceramic composites using small amounts of polymer precursors is suited for alumina
based ceramics. The processing route being simple, it has the potential to enable the manufacture of
complex shaped pieces.
Como referenciar
GODOY, ANA L.E.; BRESSIANI, J.C.; BRESSIANI, A.H. de A. Influence of addition of polysiloxane on sintering. Materials Science Forum, v. 798-799, p. 696-702, 2014. DOI: 10.4028/www.scientific.net/MSF.798-799.696. Disponível em: http://repositorio.ipen.br/handle/123456789/27682. 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.