Effect of Ultrasonication on the Microstructure and Tensile Elongation of Zirconia-Dispersed Alumina Ceramics Prepared by Colloidal Processing

Tohru S. Suzuki, Yoshio Sakka, Keishi Nakano, Keijiro Hiraga

研究成果: Article査読

63 被引用数 (Scopus)

抄録

To obtain dense, fine-grained ceramics, fine particles and advanced powder processing, such as colloidal processing, are needed. Al2O3 and ZrO2 particles are dispersed in colloidal suspensions by electrosteric repulsion because of polyelectrolyte absorbed on their surfaces. However, additional redispersion treatment such as ultrasonication is required to obtain dispersed suspensions because fine particles tend to agglomerate. The results demonstrate that ultrasonication is effective in improving particle dispersion in suspensions and producing a homogeneous fine microstructure of sintered materials. Superplastic tensile ductility is improved by ultrasonication in preparing suspensions because of the dense and homogeneous fine microstructure.

本文言語English
ページ(範囲)2132-2134
ページ数3
ジャーナルJournal of the American Ceramic Society
84
9
DOI
出版ステータスPublished - 2001 9
外部発表はい

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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