Micro-CT characterization on porosity structure of 3D Cf/ SiCm composite

Yanjian Feng; Zude Feng; Siwei Li; Weihua Zhang; Xingan Luan; Yongsheng Liu; Laifei Cheng; Litong Zhang

doi:10.1016/j.compositesa.2011.07.015

Micro-CT characterization on porosity structure of 3D C_f/ SiC_m composite

Yanjian Feng, Zude Feng, Siwei Li, Weihua Zhang, Xingan Luan, Yongsheng Liu, Laifei Cheng, Litong Zhang

School of Materials Sience and Engineering

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

51 Scopus citations

Abstract

The fabric architecture and porosity of three-dimensional (3D) C _f/SiC_m composites are characterized using commercial X-ray microcomputed tomography (microCT). The non-destructive observation exhibits an inhomogeneous structure of the carbon fiber performs with gradiently distributed porosity. The shape of fiber bundles and porosity are investigated with respect to the gas transport during chemical vapor infiltration (CVI). Difference in growth rate of deposition between outer surface and inner porosity are identified through reconstructing the porosity morphology, which coincides well with the "node-bond" theoretical model. Moreover, in the light of the porosity features, gas retention and viscous flow is revealed to play key roles in the formation of the inner structure of C_f/SiC_m.

Original language	English
Pages (from-to)	1645-1650
Number of pages	6
Journal	Composites Part A: Applied Science and Manufacturing
Volume	42
Issue number	11
DOIs	https://doi.org/10.1016/j.compositesa.2011.07.015
State	Published - Nov 2011

Keywords

A. Ceramic-matrix composites
B. Microstructures
B. Porosity
X-ray microcomputed tomography

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10.1016/j.compositesa.2011.07.015

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title = "Micro-CT characterization on porosity structure of 3D Cf/ SiCm composite",

abstract = "The fabric architecture and porosity of three-dimensional (3D) C f/SiCm composites are characterized using commercial X-ray microcomputed tomography (microCT). The non-destructive observation exhibits an inhomogeneous structure of the carbon fiber performs with gradiently distributed porosity. The shape of fiber bundles and porosity are investigated with respect to the gas transport during chemical vapor infiltration (CVI). Difference in growth rate of deposition between outer surface and inner porosity are identified through reconstructing the porosity morphology, which coincides well with the {"}node-bond{"} theoretical model. Moreover, in the light of the porosity features, gas retention and viscous flow is revealed to play key roles in the formation of the inner structure of Cf/SiCm.",

keywords = "A. Ceramic-matrix composites, B. Microstructures, B. Porosity, X-ray microcomputed tomography",

author = "Yanjian Feng and Zude Feng and Siwei Li and Weihua Zhang and Xingan Luan and Yongsheng Liu and Laifei Cheng and Litong Zhang",

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doi = "10.1016/j.compositesa.2011.07.015",

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T1 - Micro-CT characterization on porosity structure of 3D Cf/ SiCm composite

AU - Feng, Yanjian

AU - Feng, Zude

AU - Li, Siwei

AU - Zhang, Weihua

AU - Luan, Xingan

AU - Liu, Yongsheng

AU - Cheng, Laifei

AU - Zhang, Litong

PY - 2011/11

Y1 - 2011/11

N2 - The fabric architecture and porosity of three-dimensional (3D) C f/SiCm composites are characterized using commercial X-ray microcomputed tomography (microCT). The non-destructive observation exhibits an inhomogeneous structure of the carbon fiber performs with gradiently distributed porosity. The shape of fiber bundles and porosity are investigated with respect to the gas transport during chemical vapor infiltration (CVI). Difference in growth rate of deposition between outer surface and inner porosity are identified through reconstructing the porosity morphology, which coincides well with the "node-bond" theoretical model. Moreover, in the light of the porosity features, gas retention and viscous flow is revealed to play key roles in the formation of the inner structure of Cf/SiCm.

AB - The fabric architecture and porosity of three-dimensional (3D) C f/SiCm composites are characterized using commercial X-ray microcomputed tomography (microCT). The non-destructive observation exhibits an inhomogeneous structure of the carbon fiber performs with gradiently distributed porosity. The shape of fiber bundles and porosity are investigated with respect to the gas transport during chemical vapor infiltration (CVI). Difference in growth rate of deposition between outer surface and inner porosity are identified through reconstructing the porosity morphology, which coincides well with the "node-bond" theoretical model. Moreover, in the light of the porosity features, gas retention and viscous flow is revealed to play key roles in the formation of the inner structure of Cf/SiCm.

KW - A. Ceramic-matrix composites

KW - B. Microstructures

KW - B. Porosity

KW - X-ray microcomputed tomography

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U2 - 10.1016/j.compositesa.2011.07.015

DO - 10.1016/j.compositesa.2011.07.015

M3 - 文章

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SN - 1359-835X

VL - 42

SP - 1645

EP - 1650

JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

IS - 11

ER -

Micro-CT characterization on porosity structure of 3D C_f/ SiC_m composite

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Keywords

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