Combination of gel-casting and reactive melt infiltration for rapid fabrication of SiCw/SiC composites

Zhiwei Gao; Xinyuan Lv; Laifei Cheng; Fang Ye; Litong Zhang

doi:10.1016/j.ceramint.2021.02.016

Combination of gel-casting and reactive melt infiltration for rapid fabrication of SiC_w/SiC composites

Zhiwei Gao, Xinyuan Lv, Laifei Cheng, Fang Ye, Litong Zhang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

9 Scopus citations

Abstract

Gel-casting combined with reactive melt infiltration (RMI) process was first proposed for the rapid preparation of SiC whisker-reinforced SiC ceramic matrix composites (SiC_w/SiC). Gel-casting process can prepare isotropic whisker preforms with high volume fraction (≥40 vol.%) in near-net-size shape. RMI process can densify the whisker preform rapidly and achieve a high density. The influence of resin carbon (as the carbon source of SiC matrix) content on the microstructural evolution, phase composition and mechanical properties of SiC_w/SiC composites was studied in detail. When the resin carbon content is 24 vol.%, SiC_w/SiC can obtain good mechanical properties (218 MPa of flexural strength and 3.11 MPa·m^1/2 of fracture toughness) with high density (2.9 g·cm⁻³) and low open porosity (~0.36 vol.%).

Original language	English
Pages (from-to)	14375-14381
Number of pages	7
Journal	Ceramics International
Volume	47
Issue number	10
DOIs	https://doi.org/10.1016/j.ceramint.2021.02.016
State	Published - 15 May 2021

Keywords

Gel-casting
Reactive melting infiltration
SiC whisker-Reinforced SiC composites

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10.1016/j.ceramint.2021.02.016

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@article{a21c7ead00f54a0f81731ffe67b23040,

title = "Combination of gel-casting and reactive melt infiltration for rapid fabrication of SiCw/SiC composites",

abstract = "Gel-casting combined with reactive melt infiltration (RMI) process was first proposed for the rapid preparation of SiC whisker-reinforced SiC ceramic matrix composites (SiCw/SiC). Gel-casting process can prepare isotropic whisker preforms with high volume fraction (≥40 vol.%) in near-net-size shape. RMI process can densify the whisker preform rapidly and achieve a high density. The influence of resin carbon (as the carbon source of SiC matrix) content on the microstructural evolution, phase composition and mechanical properties of SiCw/SiC composites was studied in detail. When the resin carbon content is 24 vol.%, SiCw/SiC can obtain good mechanical properties (218 MPa of flexural strength and 3.11 MPa·m1/2 of fracture toughness) with high density (2.9 g·cm−3) and low open porosity (~0.36 vol.%).",

keywords = "Gel-casting, Reactive melting infiltration, SiC whisker-Reinforced SiC composites",

author = "Zhiwei Gao and Xinyuan Lv and Laifei Cheng and Fang Ye and Litong Zhang",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd and Techna Group S.r.l.",

year = "2021",

month = may,

day = "15",

doi = "10.1016/j.ceramint.2021.02.016",

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TY - JOUR

T1 - Combination of gel-casting and reactive melt infiltration for rapid fabrication of SiCw/SiC composites

AU - Gao, Zhiwei

AU - Lv, Xinyuan

AU - Cheng, Laifei

AU - Ye, Fang

AU - Zhang, Litong

PY - 2021/5/15

Y1 - 2021/5/15

N2 - Gel-casting combined with reactive melt infiltration (RMI) process was first proposed for the rapid preparation of SiC whisker-reinforced SiC ceramic matrix composites (SiCw/SiC). Gel-casting process can prepare isotropic whisker preforms with high volume fraction (≥40 vol.%) in near-net-size shape. RMI process can densify the whisker preform rapidly and achieve a high density. The influence of resin carbon (as the carbon source of SiC matrix) content on the microstructural evolution, phase composition and mechanical properties of SiCw/SiC composites was studied in detail. When the resin carbon content is 24 vol.%, SiCw/SiC can obtain good mechanical properties (218 MPa of flexural strength and 3.11 MPa·m1/2 of fracture toughness) with high density (2.9 g·cm−3) and low open porosity (~0.36 vol.%).

AB - Gel-casting combined with reactive melt infiltration (RMI) process was first proposed for the rapid preparation of SiC whisker-reinforced SiC ceramic matrix composites (SiCw/SiC). Gel-casting process can prepare isotropic whisker preforms with high volume fraction (≥40 vol.%) in near-net-size shape. RMI process can densify the whisker preform rapidly and achieve a high density. The influence of resin carbon (as the carbon source of SiC matrix) content on the microstructural evolution, phase composition and mechanical properties of SiCw/SiC composites was studied in detail. When the resin carbon content is 24 vol.%, SiCw/SiC can obtain good mechanical properties (218 MPa of flexural strength and 3.11 MPa·m1/2 of fracture toughness) with high density (2.9 g·cm−3) and low open porosity (~0.36 vol.%).

KW - Gel-casting

KW - Reactive melting infiltration

KW - SiC whisker-Reinforced SiC composites

UR - http://www.scopus.com/inward/record.url?scp=85101371842&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2021.02.016

DO - 10.1016/j.ceramint.2021.02.016

M3 - 文章

AN - SCOPUS:85101371842

SN - 0272-8842

VL - 47

SP - 14375

EP - 14381

JO - Ceramics International

JF - Ceramics International

IS - 10

ER -

Combination of gel-casting and reactive melt infiltration for rapid fabrication of SiC_w/SiC composites

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Keywords

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