首页|Cf/(CrZrHfNbTa)C-SiC high-entropy ceramic matrix composites for potential multi-functional applications
Cf/(CrZrHfNbTa)C-SiC high-entropy ceramic matrix composites for potential multi-functional applications
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
In this work,Cf/(CrZrHfNbTa)C-SiC high-entropy ceramic matrix composites with good load-bearing,elec-tromagnetic shielding and ablation resistance were designed and reported for the first time.The compos-ites were fabricated by an efficient combined processing of slurry infiltration lamination(SIL)and precur-sor infiltration and pyrolysis(PIP).Density and porosity of the as-fabricated composites are 2.72 g/cm3 and 12.44 vol.％,respectively,and the flexural strength is 185±13 MPa.Due to the carbon fiber rein-forcement with high conductivity and strong reflection,and high-entropy(CrZrHfNbTa)C ceramic matrix with strong absorbability,the total Electromagnetic interference shielding efficiency(SET)of the compos-ites with a thickness of 3 mm are as high as 88.2 dB and 90 dB respectively in X-band and Ku-band.This means that higher than 99.999999％electromagnetic shielding is achieved at 8-18 GHz,showing excel-lent electromagnetic shielding performance.The Cf/(CrZrHfNbTa)C-SiC composites also present excellent ablation resistance,with the linear and mass ablation rates of 0.9 μm/s and 1.82 mg/s after ablation at the heat flux of 5 MW/m2 for 300 s(～2450 ℃).This work opens a new insight for the synergistic de-sign of structural and functional integrated materials with load-bearing,electromagnetic shielding and ablation resistance,etc.
Yang Hu、Dewei Ni、Bowen Chen、Feiyan Cai、Xuegang Zou、Fan Zhang、Yusheng Ding、Xiangyu Zhang、Shaoming Dong
展开 >
State Key Laboratory of High-Performance Ceramics & Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China
Structural Ceramics and Composites Engineering Research Center,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China
University of Chinese Academy of Sciences,Beijing 100049,China
Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou,China
展开 >
国家重点研发计划Program of Shanghai Academic/Technology Research Leader国家自然科学基金
NETL
NSTL
万方数据
