Preparation and Microstructure of Nextel 720/Mullite-Corundum Composite

Z. Chen; L. Zhang; L. Cheng; Y. Xu

doi:10.4028/www.scientific.net/kem.249.25

Preparation and Microstructure of Nextel 720/Mullite-Corundum Composite

Z. Chen, L. Zhang, L. Cheng, Y. Xu

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

Oxide fiber/oxide matrix composites have been considered as an important and very attractive subpart of ceramic matrix composites because of their inherent stability in oxidization atmospheres at high temperature. Nextel 720 fibers reinforced mullite-corundum ceramic matrix composite was prepared by chemical vapor infiltration followed by sintering process. A mixed matrix including γ-alumina and silica was obtained by chemical vapor infiltration at 550°C using AlCl₃-SiCl₄-H ₂-CO₂ system. Then the mixture was crystallized into mullite-corundum matrix by sintering at 1260°C. Effects of (H ₂+CO₂)/(AlCl₃+SiCl₄) flow ratio and total pressure on weight gain of preform were analyzed. SEM photographs of the composite showed the matrix surrounding filaments was dense and uniform.

Original language	English
Pages (from-to)	25-30
Number of pages	6
Journal	Key Engineering Materials
Volume	249
DOIs	https://doi.org/10.4028/www.scientific.net/kem.249.25
State	Published - 2003
Event	Composite Materials III: Proceedings of the 3rd China Cross-Strait Conference on Composite Materials - Wuhan, China Duration: 7 May 2003 → 12 May 2003

Keywords

Chemical vapor infiltration
Microstructure
Nextel 720/mullite-corundum
Sintering

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title = "Preparation and Microstructure of Nextel 720/Mullite-Corundum Composite",

abstract = "Oxide fiber/oxide matrix composites have been considered as an important and very attractive subpart of ceramic matrix composites because of their inherent stability in oxidization atmospheres at high temperature. Nextel 720 fibers reinforced mullite-corundum ceramic matrix composite was prepared by chemical vapor infiltration followed by sintering process. A mixed matrix including γ-alumina and silica was obtained by chemical vapor infiltration at 550°C using AlCl3-SiCl4-H 2-CO2 system. Then the mixture was crystallized into mullite-corundum matrix by sintering at 1260°C. Effects of (H 2+CO2)/(AlCl3+SiCl4) flow ratio and total pressure on weight gain of preform were analyzed. SEM photographs of the composite showed the matrix surrounding filaments was dense and uniform.",

keywords = "Chemical vapor infiltration, Microstructure, Nextel 720/mullite-corundum, Sintering",

author = "Z. Chen and L. Zhang and L. Cheng and Y. Xu",

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language = "英语",

volume = "249",

pages = "25--30",

journal = "Key Engineering Materials",

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note = "Composite Materials III: Proceedings of the 3rd China Cross-Strait Conference on Composite Materials ; Conference date: 07-05-2003 Through 12-05-2003",

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TY - JOUR

T1 - Preparation and Microstructure of Nextel 720/Mullite-Corundum Composite

AU - Chen, Z.

AU - Zhang, L.

AU - Cheng, L.

AU - Xu, Y.

PY - 2003

Y1 - 2003

N2 - Oxide fiber/oxide matrix composites have been considered as an important and very attractive subpart of ceramic matrix composites because of their inherent stability in oxidization atmospheres at high temperature. Nextel 720 fibers reinforced mullite-corundum ceramic matrix composite was prepared by chemical vapor infiltration followed by sintering process. A mixed matrix including γ-alumina and silica was obtained by chemical vapor infiltration at 550°C using AlCl3-SiCl4-H 2-CO2 system. Then the mixture was crystallized into mullite-corundum matrix by sintering at 1260°C. Effects of (H 2+CO2)/(AlCl3+SiCl4) flow ratio and total pressure on weight gain of preform were analyzed. SEM photographs of the composite showed the matrix surrounding filaments was dense and uniform.

AB - Oxide fiber/oxide matrix composites have been considered as an important and very attractive subpart of ceramic matrix composites because of their inherent stability in oxidization atmospheres at high temperature. Nextel 720 fibers reinforced mullite-corundum ceramic matrix composite was prepared by chemical vapor infiltration followed by sintering process. A mixed matrix including γ-alumina and silica was obtained by chemical vapor infiltration at 550°C using AlCl3-SiCl4-H 2-CO2 system. Then the mixture was crystallized into mullite-corundum matrix by sintering at 1260°C. Effects of (H 2+CO2)/(AlCl3+SiCl4) flow ratio and total pressure on weight gain of preform were analyzed. SEM photographs of the composite showed the matrix surrounding filaments was dense and uniform.

KW - Chemical vapor infiltration

KW - Microstructure

KW - Nextel 720/mullite-corundum

KW - Sintering

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DO - 10.4028/www.scientific.net/kem.249.25

M3 - 会议文章

AN - SCOPUS:0141828929

SN - 1013-9826

VL - 249

SP - 25

EP - 30

JO - Key Engineering Materials

JF - Key Engineering Materials

T2 - Composite Materials III: Proceedings of the 3rd China Cross-Strait Conference on Composite Materials

Y2 - 7 May 2003 through 12 May 2003

ER -

Preparation and Microstructure of Nextel 720/Mullite-Corundum Composite

Abstract

Keywords

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