MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Flexural Strength of a Plain-Woven Tyranno-SA Fiber-Reinforced SiC Matrix Composite
Wen YangHiroshi ArakiAkira KohyamaChumphol BusabokQuanli HuHiroshi SuzukiTetsuji Noda
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2003 Volume 44 Issue 9 Pages 1797-1801

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Abstract

A SiC/SiC composite in a disc preform of 120 mm in diameter and 3.2 mm in thickness was fabricated by the chemical vapor infiltration (CVI) process. The composite was reinforced with plain-woven high-crystalline Tyarnno-SA fiber. Microstructure examinations and density measurements indicated a quite dense and very good space homogeneous matrix deposition in the composite. The fracture behavior and statistic reliability of the flexural strength upon three-point bending loading were investigated. The composite had an average flexural strength 597 MPa with a standard deviation 70 MPa. The statistic analysis of the strength showed good consistency among the bending specimens, with a Weibull modulus of 10.2, which is much higher than that for the Nicalon and Hi-Nicalon fibers reinforced CVI-SiC matrix SiC/SiC composites.

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© 2003 The Japan Institute of Metals and Materials
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