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Characterization of slurry infiltrated SiCf/SiC prepared by electrophoretic deposition

Authors
Journal
Journal of Nuclear Materials
0022-3115
Publisher
Elsevier
Volume
442
Identifiers
DOI: 10.1016/j.jnucmat.2013.04.074

Abstract

Abstract A hybrid process of SiC slurry impregnation (SI) and hot pressing (HP) has an advantage for the fabrication of dense SiCf/SiC (silicon carbide fiber reinforced/silicon carbide matrix) composite. An effective impregnation of the SiC slurry into the voids of a fiber preform is important to fill the dense matrix phase in the SI and HP processes. An electrophoretic deposition (EPD) technique was applied to effectively increase the densification of the matrix phases by a fast, simple, and efficient impregnation of the SiC slurry. An EPD was performed using a dual electrode system under an applied voltage of 10V for 30min with/without ultrasonification. The maximum density of SiCf/SiC composite fabricated by an EPD with ultrasonification was 3.14±0.04g/cm3. The flexural strength was 531±26MPa for a composite with a single interlayer of (200nm PyC (pyrolytic carbon)+600nm SiC).

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