Microstructure and mechanical properties of Cf/SiC–Al composites fabricated by PIP and vacuum pressure infiltration processes

被引：0

作者：

Liao, Jiahao ^{[1
,2
,3
]}

Chen, Zhaofeng ^{[1
]}

Li, Binbin ^{[1
]}

Liu, Jiabao ^{[1
]}

Guan, Tianru ^{[1
]}

Yu, Shengjie ^{[1
]}

Tang, Kaiyuan ^{[1
]}

Wu, Q. ^{[1
]}

Wang, Yang ^{[4
]}

机构：

[1] International Laboratory for Insulation and Energy Efficiency Materials, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing,211106, China

[2] Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing University of Aeronautics and Astronautics, Nanjing,211106, China

[3] Suzhou Superlong Aviation Heat Resistance Materials Technology Co.,Ltd, Suzhou,215400, China

[4] College of Materials Science and Engineering, Nanjing University of Technology, Nanjing,210009, China

来源：

Journal of Alloys and Compounds | 2021年 / 803卷

关键词：

3D needle-punched - Al composites - Carbon fiber fabrics - Microstructural investigation - Microstructure and mechanical properties - Open porosity - Precursor infiltration and pyrolysis - Vacuum pressure;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In the present study, 3D needle-punched Cf/SiC–Al composites were prepared by precursor infiltration and pyrolysis (PIP) and vacuum pressure infiltration processes. The microstructure and mechanical properties of the as-prepared 3D needle-punched Cf/SiC–Al composites were investigated in comparison to the porous 3D needle-punched Cf/SiC composites and the dense 3D needle-punched Cf/SiC composites with the same carbon fiber fabric. The results showed that the open porosity of 3D needle-punched Cf/SiC–Al composites was 4.63%, while the open porosity of the porous 3D needle-punched Cf/SiC composites and the dense 3D needle-punched Cf/SiC composites was 27.23% and 11.68%, respectively. Furthermore, the compressive strength of 3D needle-punched Cf/SiC–Al composites was significantly improved compared to the porous 3D needle-punched Cf/SiC composites, increasing from 168 ± 17 MPa to 445 ± 15 MPa, which was approached that of the dense 3D needle-punched Cf/SiC composites (451 ± 32 MPa). The microstructural investigations revealed that most of the pores were filled with Al alloy, improving the bearing capacity of the matrix of 3D needle-punched Cf/SiC composites. © 2019

引用

页码：934 / 941