Fabrication of the tube-shaped SiCf/SiC by hot pressing

Title
Fabrication of the tube-shaped SiCf/SiC by hot pressing
Author(s)
윤당혁유현우피핏피트리아니이승호박지연[박지연]
Keywords
SILICON-CARBIDE COMPOSITES; SIC-MATRIX COMPOSITES; SIC/SIC COMPOSITES; FUSION APPLICATIONS; ELECTROPHORETIC DEPOSITION; MECHANICAL-PROPERTIES; THERMAL-PROPERTIES; ISSUES; CVI; INFILTRATION
Issue Date
201507
Publisher
ELSEVIER SCI LTD
Citation
CERAMICS INTERNATIONAL, v.41, no.6, pp.7890 - 7896
Abstract
A manufacturing technique for fabricating a dense tubular SiC long fiber-reinforced SiC composite (SiCf/SiC) by hot pressing was developed. After infiltrating a SiC-based matrix phase, containing a 12 wt% of Al2O3-Y2O3 sintering additive, into the fine voids of a Tyranno (TM)-SA3 SiC fabric preform by electrophoretic deposition combined with the application of ultrasonic pulses, hot pressing was performed using 2 types of specially designed molds filled with graphite powder to transfer the vertical hot press force efficiently to the sidewalls of the tubular SiCf/SiC. Compared to the low density (similar to 60%) of SiCf/SiC hot-pressed using a conventional mold, a density > 95% could be acquired using a special mold filled with graphite powder as a pressure delivering medium. This method is suitable for fabricating a dense tubular SiCf/SiC, which cannot be obtained using a conventional extrusion method. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/31611http://dx.doi.org/10.1016/j.ceramint.2015.02.127
ISSN
0272-8842
Appears in Collections:
공과대학 > 신소재공학부 > Articles
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