Microstructure and mechanical property of Cf/SiC core/shell composite fabricated by direct ink writing

被引：74

作者：

Xia, Yuanlin ^{[1
,2
]}

Lu, Zhongliang ^{[1
,2
,3
]}

Cao, Jiwei ^{[1
]}

Miao, Kai ^{[1
]}

Li, Jian ^{[1
]}

Li, Dichen ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Mech Engn, State Key Lab Mfg Syst Engn, Xian 710049, Shaanxi, Peoples R China

[2] Natl Inst Corp Addit Mfg, Yan Xiang Rd 99, Xian 710049, Shaanxi, Peoples R China

[3] Collaborat Innovat Ctr Adv Aeroengine, Xue Yuan Rd 37, Beijing 100191, Peoples R China

来源：

SCRIPTA MATERIALIA | 2019年 / 165卷

基金：

中国国家自然科学基金;

关键词：

Short carbon fiber; SiC ceramic composite; Core-shell microstructure; Direct ink writing; POLYMER COMPOSITES; STRENGTH;

D O I：

10.1016/j.scriptamat.2019.02.016

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A novel approach for the fabrication of Short carbon fibers reinforced SiC ceramic composites filaments with core shell microstructure by direct ink writing was firstly proposed. A novel core-shell feed rod for co-extrusion was designed. Fiber interface layer was prepared by precursor infiltration pyrolysis with polycarbosilane. The results indicated that the ratio (d/D) of carbon fiber (core) to SiC (shell) could be controlled effectively. The debonding and fracture of short fibers with high orientation might improve the fracture resistance of the Cf/SiC composite. The filament-based specimens with strength of similar to 123 MPa and porosity of similar to 31% (d/D = 0.6) were successfully fabricated. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：84 / 88

页数：5

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