Mechanical properties of a 3D needled C/SiC composite with graphite filler

Yanzhi Cai; Shangwu Fan; Heyi Liu; Litong Zhang; Laifei Cheng; Juan Jiang; Benxing Dong

doi:10.1016/j.msea.2009.08.031

Mechanical properties of a 3D needled C/SiC composite with graphite filler

Yanzhi Cai, Shangwu Fan, Heyi Liu, Litong Zhang, Laifei Cheng, Juan Jiang, Benxing Dong

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

37 Scopus citations

Abstract

A three-dimensional (3D) needled carbon/carbon (C/C) preform was achieved after one cycle of precursor infiltration-pyrolysis. The mixture of phenolic resin and 8 vol% graphite with an average particle size of 2.5 μm was employed as the carbon precursor. The C/SiC composite, made from the as-obtained C/C preform infiltrated with liquid silicon, was mechanically characterized under flexural loading. The results show that the material exhibited pseudo-plastic fracture characteristic and had the average strength of 120 MPa. A major portion of the toughness was attributable to fiber elastic bridging and frictional pullout and the crack deflection and pinning in the matrix. Flake graphite had tailored the carbon-rich interfacial layer and increased the toughness of the brittle matrix.

Original language	English
Pages (from-to)	539-543
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	527
Issue number	3
DOIs	https://doi.org/10.1016/j.msea.2009.08.031
State	Published - 15 Jan 2010

Keywords

C/SiC composite
Graphite
Mechanical properties
Needled

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10.1016/j.msea.2009.08.031

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title = "Mechanical properties of a 3D needled C/SiC composite with graphite filler",

abstract = "A three-dimensional (3D) needled carbon/carbon (C/C) preform was achieved after one cycle of precursor infiltration-pyrolysis. The mixture of phenolic resin and 8 vol% graphite with an average particle size of 2.5 μm was employed as the carbon precursor. The C/SiC composite, made from the as-obtained C/C preform infiltrated with liquid silicon, was mechanically characterized under flexural loading. The results show that the material exhibited pseudo-plastic fracture characteristic and had the average strength of 120 MPa. A major portion of the toughness was attributable to fiber elastic bridging and frictional pullout and the crack deflection and pinning in the matrix. Flake graphite had tailored the carbon-rich interfacial layer and increased the toughness of the brittle matrix.",

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author = "Yanzhi Cai and Shangwu Fan and Heyi Liu and Litong Zhang and Laifei Cheng and Juan Jiang and Benxing Dong",

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T1 - Mechanical properties of a 3D needled C/SiC composite with graphite filler

AU - Cai, Yanzhi

AU - Fan, Shangwu

AU - Liu, Heyi

AU - Zhang, Litong

AU - Cheng, Laifei

AU - Jiang, Juan

AU - Dong, Benxing

PY - 2010/1/15

Y1 - 2010/1/15

N2 - A three-dimensional (3D) needled carbon/carbon (C/C) preform was achieved after one cycle of precursor infiltration-pyrolysis. The mixture of phenolic resin and 8 vol% graphite with an average particle size of 2.5 μm was employed as the carbon precursor. The C/SiC composite, made from the as-obtained C/C preform infiltrated with liquid silicon, was mechanically characterized under flexural loading. The results show that the material exhibited pseudo-plastic fracture characteristic and had the average strength of 120 MPa. A major portion of the toughness was attributable to fiber elastic bridging and frictional pullout and the crack deflection and pinning in the matrix. Flake graphite had tailored the carbon-rich interfacial layer and increased the toughness of the brittle matrix.

AB - A three-dimensional (3D) needled carbon/carbon (C/C) preform was achieved after one cycle of precursor infiltration-pyrolysis. The mixture of phenolic resin and 8 vol% graphite with an average particle size of 2.5 μm was employed as the carbon precursor. The C/SiC composite, made from the as-obtained C/C preform infiltrated with liquid silicon, was mechanically characterized under flexural loading. The results show that the material exhibited pseudo-plastic fracture characteristic and had the average strength of 120 MPa. A major portion of the toughness was attributable to fiber elastic bridging and frictional pullout and the crack deflection and pinning in the matrix. Flake graphite had tailored the carbon-rich interfacial layer and increased the toughness of the brittle matrix.

KW - C/SiC composite

KW - Graphite

KW - Mechanical properties

KW - Needled

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U2 - 10.1016/j.msea.2009.08.031

DO - 10.1016/j.msea.2009.08.031

M3 - 文章

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SN - 0921-5093

VL - 527

SP - 539

EP - 543

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 3

ER -

Mechanical properties of a 3D needled C/SiC composite with graphite filler

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Keywords

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