Electromagnetic properties of pyrolytic carbon-Si3N4 ceramics with gradient PyC distribution

被引：28
作者：
Li, Xiangming [1 ]
Zhang, Litong [2 ]
Yin, Xiaowei [2 ]
机构：
[1] NW A&F Univ, Coll Water Resources & Architecture Engn, Yangling 712100, Shaanxi, Peoples R China
[2] NW Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Shaanxi, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2013年 / 33卷 / 04期
关键词：
Si3N4; Pyrolytic carbon; Chemical vapour infiltration; Electromagnetic properties; Functional applications; INTERFERENCE SHIELDING EFFECTIVENESS; MICROWAVE REFLECTIVITY; CONDUCTING PLATE; COMPOSITES; DESIGN; ABSORPTION; EFFICIENCY; SURFACE;
D O I：
10.1016/j.jeurceramsoc.2012.09.028
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：
Pyrolytic carbon-Si3N4 ceramics (PyC-Si3N4) with gradient PyC distribution (Gradient-PyC-Si3N4) is fabricated by directional oxidation. After directional oxidation for 1.0 h, the electromagnetic absorptivity of Gradient-PyC-Si3N4 increases significantly from 0.8 to 50.1% with the obvious reduction of electromagnetic reflectivity from 99.2 to 43.8%. The Gradient-PyC-Si3N4 is a good electromagnetic absorbing material meeting the requirement of self-concealing technology. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：647 / 651
页数：5
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