纳米材料具有小尺寸效应、表面与界面效应、量子尺寸效应和宏观量子隧道效应等特殊的结构和组成；金属磁性颗粒复合材料具有高饱和磁化强度、高磁导率和小的磁致伸缩系数，对于获得高吸收的电磁波吸收材料至关重要。 对颗粒复合材料辐射吸收的物理机理进行学习认识，了解和掌握颗粒复合材料的辐射吸收基本原理，分析颗粒复合材料的辐射吸收特性各影响因素。分析金属、非金属、磁性与非磁性颗粒复合材料的吸收特性，分析颗粒尺寸和分布等因素对其辐射吸收特性的影响。运用CST软件，对含微\纳米尺寸颗粒复合材料的辐射吸收特性进行模拟计算得出：高磁导率和复介电常数的实部虚部为纳米颗粒材料的辐射吸收主要影响因素，纳米材料外形为正方体时吸收率最大。9662
关键词 复合材料 辐射吸收 纳米颗粒 金属磁性
Title Analysis of absorption characteristics of particulate
composites
Abstract
Nanomaterials with small size effect, the special structure and
composition of surface and interface effects, the quantum size effect and
macroscopic quantum tunneling effect. Metal magnetic particle composites
have high saturation magnetization, high permeability and small
magnetostriction coefficient of performance,which is important to obtain
the high electromagnetic wave absorbing material.
We learn to recognize the physical mechanism of radiation absorbed on
particulate composites.We understand and grasp the basic principles of
Radiation absorption of the particulate composites.We analyzed the impact
of various factors of the radiation absorption properties of particulate
composites.Composites containing micro \ nanometer-sized particles of
radiation absorption characteristics were simulated by using the CST .We
analyze the absorption properties of metals, non-metallic, magnetic and
non-magnetic granular composite materials.We analyze the impact of factors
such as particle size and distribution of its radiation absorption
properties. High magnetic permeability and complex permittivity of the
real part of the imaginary part of the radiation of nanoparticles absorb
the main factors.
Keywords Composite materials Absorption characteristics Radiation absorption
Nanometer-sized 目 次
1 引言 . 1
1.1 纳米颗粒概述 ... 1
1.2 纳米材料优异性质 ... 1
1.3 纳米复合材料概述 ... 2
1.4 纳米复合材料光学性质 ... 3
1.5 颗粒复合材料国内外研究进展 . 4
1.6 纳米颗粒的磁特性 ... 6
1.7 颗粒复合材料的吸收特性研究的目的和意义 . 7
2 辐射吸收基本原理 . 8
2.1 一般磁损耗机制 . 9
2.2 有效介质理论 .. 10
2.3 隐身材料的工作原理 12
2.4 纳米隐身材料的吸波机理 12
2.5 纳米隐身吸波材料的特性 14
3 辐射吸收特性各影响因素 .. 15
3.1 高磁导率 .. 15
3.2 复介电常数 16
3.3 磁性颗粒的大小和非晶介质包覆层的厚度 .. 18
3.4 材料折射率 20
4 建立数学物理模型 20
4.1 分析与讨论 21 CST颗粒复合材料的吸收特性分析:http://www.751com.cn/cailiao/lunwen_8460.html