Influence of the dispersion condition on the particle size distribution analysis of an alumina powder
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2003
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INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 4th
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Resumo
It is well known that colloidal powder particles (between 1 mm and 0.001 mm) tend to
agglomerate due to electrostatic forces. Then assuring an optimal dispersion condition is essential
for good particle-size analysis results, since aggregates or weak agglomerates can be measured as
single particles. In this paper the particle size distribution of an alumina powder A 1000SG
(ALCOA) was measured using distinct dispersion procedures. Distilled water was used as
dispersant liquid in the pure state and with additives (citric acid and Duramax D-305). The time of
supersonic application was also varied. Particle size analysis was accomplished by laser scattering
techue and the dispersion condition was evaluated through zeta potential. The results showed
that the Duramax's electrosteric activity is more efficient than citric acid's electrostatic force.
Although useful, the ultrasonic application was not good enough to assure an optimal dispersion, at
least for the material tested here.
Como referenciar
PAPINI, C.J.; YOSHITO, W.K.; GOUVEA, D.; LEAL NETO, R.M. Influence of the dispersion condition on the particle size distribution analysis of an alumina powder. In: INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 4th, Nov. 19-21, 2003, Guaruja, SP. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/15559. Acesso em: 19 Feb 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.