Microstructural evoluation of fast firing soft porcelain
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2007
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INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 6th
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Resumo
The present work deals with the study of the microstructural evolution of fast firing soft porcelains.
Soft porcelains are those sintered at low temperatures (bellow 1350°C), and the thermal treatment
used was similar to that of industrial products, with 10 minutes of sintering time. As raw materials
kaolin, sodium feldspar, potash feldspar and talc, all except the former used as melting oxides in
order to form eutectics at low temperatures. The compositions were formulated according the
mixture design technique, four factors at three levels, with coordinate transformation by
independent variables. The minerals were characterized to determine its chemical and mineral
compositions and particle size distribution. Nine compositions were formulated, and the analyses
were carried out for the thermal behavior (differential scanning calorimetry, DSC) and evolution of
the crystalline phases with temperature (X ray diffraction, XRD). The results were interpreted by
analysis of variance (ANOVA) and presented as response surfaces. There was glass formation due
the effect of both feldspars (orthoclase and albite). Talc has influenced the porcelain densification.
The main crystalline phases obtained were cordierite and cristobalite, due the presence of talc, and
mullite and quartz, due the initial content of kaolin.
Como referenciar
BERNARDIN, ADRIANO M.; RIELLA, HUMBERTO G.; CARVALHO, ELITA F.U. de. Microstructural evoluation of fast firing soft porcelain. In: INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 6th, Nov. 7-10, 2007, Rio de Janeiro, RJ. Proceedings... p. 1059-1064. Disponível em: http://repositorio.ipen.br/handle/123456789/15800. 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.