Enhanced electromagnetic wave absorption properties of PDCs-SiCN(Ni) fibers by in-situ formed CNTs and Ni2Si

被引：30
作者：
Guo, Xue [1 ]
Lu, Junbin [2 ]
Liu, Jie [1 ]
Liu, Chunmiao [1 ]
Tong, Yanchun [1 ]
Li, Jiao [1 ]
Sun, Haibin [1 ]
Peng, Hui [1 ]
Wu, Shigang [1 ]
Feng, Yurun [1 ]
Gong, Hongyu [2 ]
机构：
[1] Shandong Univ Technol, Sch Mat Sci & Engn, Zibo 255049, Peoples R China
[2] Shandong Univ, Key Lab Liquid solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2022年 / 48卷 / 14期
关键词：
PDCs-SiCN(Ni) fibers; EMW absorption properties; Electrospinning technology; Polymer-derived ceramics method; Nickel acetylacetonate; HIGHLY EFFICIENT; MICROWAVE; PERFORMANCE; NANOFIBERS; CERAMICS; LIGHTWEIGHT; NANOPARTICLES; COMPOSITES; NANOWIRES;
D O I：
10.1016/j.ceramint.2022.04.012
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
By utilizing polymer-derived ceramics (PDCs) method and electrospinning technology, SiCN(Ni) fibers with 1 wt % nickel content at different calcination temperatures (1000-1300 degrees C) were synthesized. The properties of PDCsSiCN(Ni) fibers were tested by XRD, SEM, TEM, Raman spectroscopy, XPS and vector network analyzer. The results showed that the addition of nickel acetylacetonate (NA) promoted the in-situ formation of CNTs and Ni2Si at high temperatures, which could adjust the impedance matching performance and improve the electromagnetic wave (EMW) absorption properties. The minimum reflection loss (RL) of SiCN(Ni) fibers was -47.55 dB (4.2 mm), and the effective absorption band (EAB, RL <= -10 dB) was 3.6 GHz (14.4-18 GHz) under the ultra-thin thickness of 1.24 mm.
引用
收藏
页码：20495 / 20505
页数：11
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