Preparation of SiCw/Al2O3 Composite Sheets through Gel-Tape-Casting Process

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In this paper, the gel-tape-casting process was applied to manufacture multilayer green sheets of SiCw /Al2O3 composite. The influence of SiCw, ball milling time and solids loading on the rheological behaviors of SiCw/Al2O3 slurries were investigated. It was found that the slurries exhibited a shear thinning behavior. The viscosity of the slurry increased with increasing of the fraction of SiCw. A stable slurry with 40 vol.% solids loading was prepared when 20 vol.% of SiCw was added. The flexural strength of the green sheet showed a trend of increasing firstly and then decreasing with SiCw increasing. The optimal mechanical properties of 40.2 MPa for flexural strength was obtained when SiCw contents was 20 vol.%. SEM observation indicated that significant whisker alignment was present in the composite tape, which was considered as one of parameters affecting toughening process.

Info:

Periodical:

Materials Science Forum (Volumes 675-677)

Edited by:

Yi Tan and Dongying Ju

Pages:

119-122

DOI:

10.4028/www.scientific.net/MSF.675-677.119

Citation:

S. C. Li et al., "Preparation of SiCw/Al2O3 Composite Sheets through Gel-Tape-Casting Process", Materials Science Forum, Vols. 675-677, pp. 119-122, 2011

Online since:

February 2011

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Price:

$35.00

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