Hi-Nicalon™ fiber-reinforced CVI-SiC matrix composites: I effects of PyC and PyC-SiC multilayers on the fracture behaviors and flexural properties

Wen Yang; Hiroshi Araki; Tetsuji Noda; Ji Yeon Park; Yutai Katoh; Tatsuya Hinoki; Jinnan Yu; Akira Kohyama

doi:10.2320/matertrans.43.2568

Hi-Nicalon™ fiber-reinforced CVI-SiC matrix composites: I effects of PyC and PyC-SiC multilayers on the fracture behaviors and flexural properties

Wen Yang, Hiroshi Araki, Tetsuji Noda, Ji Yeon Park, Yutai Katoh, Tatsuya Hinoki, Jinnan Yu, Akira Kohyama

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

The flexural properties of 2D plain-woven Hi-Nicalon™ fiber reinforced SiC/SiC composites with various PyC and PyC-SiC multilayers were studied at ambient temperature. The composites were fabricated by chemical vapor infiltration process (CVI). The interlayers were deposited by isothermal CVI process from methane for PyC layer and CH₃SiCl₃ (MTS) for SiC layer. The effects of the various interlayers on the fracture behaviors and flexural properties were investigated. The PyC layer thickness showed significant influence on the flexural strength and an optimum PyC layer thickness was defined to be ∼ 150 nm. Fiber/matrix interfacial debonding occurred at the very fiber surface for single PyC layered composites while several interracial debonding and cracking behaviors were observed with the PyC-SiC multilayered composites.

Original language	English
Pages (from-to)	2568-2573
Number of pages	6
Journal	Materials Transactions
Volume	43
Issue number	10
DOIs	https://doi.org/10.2320/matertrans.43.2568
State	Published - Oct 2002
Externally published	Yes

Keywords

Chemical vapor infiltration process
Flexural properties
Hi-Nicalon fiber
Pyrolytic carbon and silicon carbide interlayers
SiC/SiC composites

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10.2320/matertrans.43.2568

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@article{119c0e5d7edc483e8a0c3531f1d27168,

title = "Hi-Nicalon{\texttrademark} fiber-reinforced CVI-SiC matrix composites: I effects of PyC and PyC-SiC multilayers on the fracture behaviors and flexural properties",

abstract = "The flexural properties of 2D plain-woven Hi-Nicalon{\texttrademark} fiber reinforced SiC/SiC composites with various PyC and PyC-SiC multilayers were studied at ambient temperature. The composites were fabricated by chemical vapor infiltration process (CVI). The interlayers were deposited by isothermal CVI process from methane for PyC layer and CH3SiCl3 (MTS) for SiC layer. The effects of the various interlayers on the fracture behaviors and flexural properties were investigated. The PyC layer thickness showed significant influence on the flexural strength and an optimum PyC layer thickness was defined to be ∼ 150 nm. Fiber/matrix interfacial debonding occurred at the very fiber surface for single PyC layered composites while several interracial debonding and cracking behaviors were observed with the PyC-SiC multilayered composites.",

keywords = "Chemical vapor infiltration process, Flexural properties, Hi-Nicalon fiber, Pyrolytic carbon and silicon carbide interlayers, SiC/SiC composites",

author = "Wen Yang and Hiroshi Araki and Tetsuji Noda and Park, {Ji Yeon} and Yutai Katoh and Tatsuya Hinoki and Jinnan Yu and Akira Kohyama",

year = "2002",

month = oct,

doi = "10.2320/matertrans.43.2568",

language = "English",

volume = "43",

pages = "2568--2573",

journal = "Materials Transactions",

issn = "1345-9678",

number = "10",

}

TY - JOUR

T1 - Hi-Nicalon™ fiber-reinforced CVI-SiC matrix composites

T2 - I effects of PyC and PyC-SiC multilayers on the fracture behaviors and flexural properties

AU - Yang, Wen

AU - Araki, Hiroshi

AU - Noda, Tetsuji

AU - Park, Ji Yeon

AU - Katoh, Yutai

AU - Hinoki, Tatsuya

AU - Yu, Jinnan

AU - Kohyama, Akira

PY - 2002/10

Y1 - 2002/10

N2 - The flexural properties of 2D plain-woven Hi-Nicalon™ fiber reinforced SiC/SiC composites with various PyC and PyC-SiC multilayers were studied at ambient temperature. The composites were fabricated by chemical vapor infiltration process (CVI). The interlayers were deposited by isothermal CVI process from methane for PyC layer and CH3SiCl3 (MTS) for SiC layer. The effects of the various interlayers on the fracture behaviors and flexural properties were investigated. The PyC layer thickness showed significant influence on the flexural strength and an optimum PyC layer thickness was defined to be ∼ 150 nm. Fiber/matrix interfacial debonding occurred at the very fiber surface for single PyC layered composites while several interracial debonding and cracking behaviors were observed with the PyC-SiC multilayered composites.

AB - The flexural properties of 2D plain-woven Hi-Nicalon™ fiber reinforced SiC/SiC composites with various PyC and PyC-SiC multilayers were studied at ambient temperature. The composites were fabricated by chemical vapor infiltration process (CVI). The interlayers were deposited by isothermal CVI process from methane for PyC layer and CH3SiCl3 (MTS) for SiC layer. The effects of the various interlayers on the fracture behaviors and flexural properties were investigated. The PyC layer thickness showed significant influence on the flexural strength and an optimum PyC layer thickness was defined to be ∼ 150 nm. Fiber/matrix interfacial debonding occurred at the very fiber surface for single PyC layered composites while several interracial debonding and cracking behaviors were observed with the PyC-SiC multilayered composites.

KW - Chemical vapor infiltration process

KW - Flexural properties

KW - Hi-Nicalon fiber

KW - Pyrolytic carbon and silicon carbide interlayers

KW - SiC/SiC composites

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U2 - 10.2320/matertrans.43.2568

DO - 10.2320/matertrans.43.2568

M3 - Article

AN - SCOPUS:0036818164

SN - 1345-9678

VL - 43

SP - 2568

EP - 2573

JO - Materials Transactions

JF - Materials Transactions

IS - 10

ER -

Hi-Nicalon™ fiber-reinforced CVI-SiC matrix composites: I effects of PyC and PyC-SiC multilayers on the fracture behaviors and flexural properties

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Keywords

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