无机材料学报2017，Vol.32Issue(7)：751-757,7.DOI:10.15541/jim20160558
原子层沉积氧化铝包覆羰基铁粉的抗腐蚀性及吸波性能
Corrosion Resistance and Wave Absorbing Property of Carbonyl Iron Powder Coating with Alumina by Atomic Layer Deposition
摘要
Abstract
To improve the corrosion resistant capability and electromagnetic performance of carbonyl iron powders (CIPs), alumina thin films were coated on carbonyl iron powder by atomic layer deposition (ALD) using trimethylaluminum and water as precursors. Original and modified carbonyl iron powder was characterized comprehensively via scanning electron microscope (SEM), transmission electron microscope (TEM), thermogravimetric analyzer (TGA), Fourier Transform infra-red spectroscope (FTIR), and vector network analyzer. The results indicated that nano-alumina films were conformably grown on the surface of carbonyl iron powders via ALD, forming an excellent core-shell CIP/alumina structure. Compared to the original sample, thermal stability and corrosion resistance of the modified carbonyl iron powders were greatly im-proved. Antioxidation capability of CIPs was found enhanced with the increase of alumina coating thickness, and the maxi-mum antioxidation temperature can exceed 550℃. It was also found that the complex permittivity of core-shell CIP/alumina decreased greatly while the complex permeability was almost the same. Therefore, the electromagnetic parameters and mi-crowave absorption properties of the modified CIPs was also improved.关键词
原子层沉积/羰基铁粉/氧化铝/吸波材料/抗腐蚀性Key words
atomic layer deposition/carbonyl iron powder/alumina/wave absorbing materials/corrosion resistant分类
通用工业技术引用本文复制引用
刘彦峰,李磊削,王韫宇,李昌烽..原子层沉积氧化铝包覆羰基铁粉的抗腐蚀性及吸波性能[J].无机材料学报,2017,32(7):751-757,7.基金项目
国家自然科学基金(11072091) （11072091）
江苏省"青蓝工程"项目 （）
江苏省镇江市"331工程"项目National Natural Science Foundation of China(11072091) （11072091）
'QingLan' Project Foundation of Jiangsu Province （）
Zhen-jiang' 331 Project',Jiangsu Province （）
