Fabrication of cylindrical SiCf/Si/SiC-based composite by electrophoretic deposition and liquid silicon infiltration

Title
Fabrication of cylindrical SiCf/Si/SiC-based composite by electrophoretic deposition and liquid silicon infiltration
Author(s)
윤당혁Alberto Ortona[Alberto Ortona]Thomas Fend[Thomas Fend]유현우카티라주
Keywords
SIC/SIC COMPOSITES; MATRIX COMPOSITES; FIBER; CARBIDE; INTERFACE; CERAMICS; STRENGTH; CARBON
Issue Date
201405
Publisher
ELSEVIER SCI LTD
Citation
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, v.34, no.5, pp.1131 - 1138
Abstract
Cylindrical SiC-based composites composed of inner Si/SiC reticulated foam and outer Si-infiltrated SiC fiber-reinforced SiC (SiCf/Si/SiC) skin were fabricated by the electrophoretic deposition of matrix particles into SiC fabrics followed by Si-infiltration for high temperature heat exchanger applications. An electrophoretic deposition combined with ultrasonication was used to fabricate a tubular SiCf/SiC skin layer, which infiltrated SiC and carbon particles effectively into the voids of SiC fabrics by minimizing the surface sealing effect. After liquid silicon infiltration at 1550 degrees C, the composite revealed a density of 2.75 g/cm(3) along with a well-joined interface between the inside Si/SiC foam and outer SiCf/Si/SiC skin layer. The results also showed that the skin layer, which was composed of 81.4 wt% beta-SiC, 17.2 wt% Si and 1.4 wt% SiO2, exhibited a gastight dense microstructure and the flexural strength of 192.3 MPa. (C) 2013 Elsevier Ltd. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/32256http://dx.doi.org/10.1016/j.jeurceramsoc.2013.10.037
ISSN
0955-2219
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공과대학 > 신소재공학부 > Articles
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