Lightweight Cf/SiC Composites with High Fiber Content Fabricated by Binder Jetting Additive Manufacturing and Liquid Silicon Infiltration

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外文摘要：In this study,Cf/SiC composites with excellent mechanical and thermal properties were prepared by combining binder jetting(BJ)additive manufacturing with liquid silicon infiltration(LSI)process.The introduction of Cf into the Cf/SiC mixed powder reduced its spreading ability,which reduced the density,strength,and precision of the Cf/SiC green parts.However,phenolic resin infiltration and pyrolysis(PRIP)treatment compensated for the decrease in the density of the green parts resulting from the introduction of Cf.By optimizing the number of PRIP cycles to increase the pyrolytic carbon(PyC)content in the carbonized parts,the Cf in the green parts successfully prevented the reaction with molten Si in the LSI and played an important role in strengthening and toughening the composites.The flexural strength,fracture toughness,and thermal conductivity of the Cf/SiC composites reached the maximum values of 316±16 MPa,4.81±0.12 MPa·m1/2,and 140 W/m·K,respectively.This study presents future opportunities for the cost-effective and efficient industrial manufacturing of Cf/SiC complex structures.

外文关键词：

Carbon fiber reinforced SiC ceramicsAdditive manufacturingBinder jetting(BJ)Liquid silicon infiltration(LSI)Mechanical properties and thermal properties

作者：

Shidong Hu、Kunhao Feng、Qihang Wang、Jiangtao Sun、Jiaming Yuan、Yiwei Mao、Daosheng Cai、Wenming Jiang、Chunsheng Ye、Qingsong Wei

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作者单位：

State Key Laboratory of Materials Processing and Die & Mould Technology,School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan,430074,China

基金：

National Defense Basic Scientific Research Program of ChinaFundamental Research Funds for the Central Universities of China

项目编号：

JCKY2022213C008YCJJ20230353

出版年：

2024

DOI：

10.1016/j.amf.2024.200116

中国机械工程学报:增材制造前沿(英文)

ISSN：

年,卷(期)：2024.3(1)