Instrument for ceramic particle dispersion

Toshihiro Isobe, Asami Ooyama, Yoshikazu Kameshima, Akira Nakajima, Kiyoshi Okada

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Agglomerated sub-micrometer-sized alumina particles were pulverized using a novel method. A high-density polyethylene (HDPE) cup equipped with stainless steel mesh turned at a 500-2000. rpm revolution rate and a 200-800. rpm rotation rate. A suspension passes through the small mesh openings, and turbulent flow and high shear stress was generated. The sample's particle size distribution before mesh treatment exhibited a broad peak at 2-70. μm, reflecting the particles' agglomeration. This suspension's viscosity was 19.8. mPa s. After mesh treatment at 2000. rpm revolution rate for 10. min, the distribution showed two peaks at 0.2 and 2-70. μm. The alumina agglomerates shrank concomitantly with increased treatment time and dispersed completely after 30. min mesh treatment. The resultant suspension's viscosity was 9.2. mPa s, which is half that of the pre-treatment suspension.

Original languageEnglish
Pages (from-to)25-29
Number of pages5
JournalPowder Technology
Volume200
Issue number1-2
DOIs
Publication statusPublished - Feb 26 2010
Externally publishedYes

Keywords

  • Alumina
  • Colloids
  • Dispersion/agglomeration
  • Slip casting
  • Viscosity

ASJC Scopus subject areas

  • Chemical Engineering(all)

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