Volume 13, Issue 4, 2004
Effect of reinforcements on mechanical and thermal properties of SiC short-fibre-reinforced
SiC composites
Jae-Seol LEE
and Toyohiko Yano
Research Laboratory
for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku,
Tokyo 152-8550, Japan
(Received 3/04;
accepted 12/04)
Abstract
Tyranno SA fibre
was higher strength at high temperatures and higher thermal conductivity than
that of Hi-Nicalon fibre. Therefore, the aim of this study was to investigate
the effect of reinforcements on the mechanical and thermal properties of SiC/SiC
composites containing non-coated Tyranno SA short fibres. SiC/SiC composites
containing 30 vol.% short fibres were fabricated by tape-casting and
hot-pressing at 1650oC-1750oC under a pressure of 40 MPa using an Al 2O3-Y2O3-CaO
mixture as sintering additives independent of fibre type.
Keywords:
SiC/SiC composite, Short fibre,
Fracture toughness, Thermal conductivity, Mechanical property
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