Effects of aspect ratio and particle size on the microwave properties of Fe-Cr-Si-Al alloy flakes

被引：97
作者：
Wang, Xian [1 ]
Gong, Rongzhou
Li, Peigang
Liu, Lingyun
Cheng, Weiming
机构：
[1] Huazhong Univ Sci & Technol, Dept Elect Sci & Technol, Wuhan 430074, Peoples R China
[2] Zhejiang Sci Tech Univ, Ctr Optoelect Mat & Devices, Dept Phys, Hangzhou 310018, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 466卷 / 1-2期
关键词：
crystal structure; aspect ratio; particle size; Fe-Cr-Si-Al alloy; electromagnetic;
D O I：
10.1016/j.msea.2007.02.051
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The structural and electromagnetic properties of gas atomized Fe-Cr-Si-Al alloy (SMSS) powders flattened by ball milling were studied. It is found that the aspect ratio of the powders with the same particle sizes of 48-55 mu m increases with the milling time. With the increase of the aspect ratio, the complex permittivity, permeability and intensity of reflectivity peak increase, respectively, and the matching frequency shifts to low frequency due to the improved wave impedance matching and the increase of real part of complex permittivity and permeability. A similar trend of the microwave properties with the decrease of the particle size can be also observed. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：178 / 182
页数：5
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