材料科学与工程学报2017，Vol.35Issue(5)：708-712,774,6.DOI:10.14136/j.cnki.issn 1673-2812.2017.05.005
TiO2包覆对不同粒径羰基铁粉吸波性能的影响
Effects of TiO2 Coating on the Absorption Properties of Different Sized Carbonyl Iron Particles
摘要
Abstract
Carbonyl iron powders with average diameters of 6μm and 1μm were coated,respectively,with TiO2 film using the sol-gel method.A vector network analyzer was used to measure the complex dielectric permittivity,complex magnetic permeability,and absorption coefficient of the composites composed of carbonyl iron particles and paraffin,where the carbonyl iron particles were bare or TiO2 coated.The results show that the TiO2 coaitng can increase the complex magnetic permeability and the complex dielectric constant of the composite with 1μm diameter carbonyl iron particles,and enhance its microwave absorption coefficient.We suggest that the TiO2 film can prevent eddy currents among the small carbonyl iron particles,which increases its microwave absorption coefficient.关键词
二氧化钛/羰基铁粉/吸波性能/电磁参数Key words
titanium dioxide/carbonyl iron powder/microwave absorbing properties/electromagnetism parameter分类
通用工业技术引用本文复制引用
韩铮,曾国勋,熊小敏..TiO2包覆对不同粒径羰基铁粉吸波性能的影响[J].材料科学与工程学报,2017,35(5):708-712,774,6.基金项目
国家自然科学基金资助项目(10974259,11274391,4103490) （10974259,11274391,4103490）
广东省科技计划资助项目(4202520) （4202520）
