羰基铁粉抗氧化性能研究现状

摘要

羰基铁粉具有高磁导率和高磁损耗等优良特性,被认为是薄层吸波涂层吸收剂的理想材料.加之,羰基铁粉的居里温度较高,有望成为薄层耐温吸波涂层的吸收剂.但是,羰基铁粉由于颗粒尺寸较小,颗粒表面积较大,在高温下的抗氧化性较差,近年来有关其抗氧化性能的研究已成为备受关注的热点.本文概述了羰基铁粉吸收电磁波的机制以及提高抗氧化性能的机理,介绍了几种有助于提高其抗氧化性能的制备方法,最后展望了这一领域的研究前景.%Carbonyl iron powder is considered as an ideal absorber for thin absorbing coating,due to its excellent properties such as high permeability and high magnetic loss.Additionally,high Curie temperature makes carbonyl iron powders a potential can-didate for the absorbent of heat-resistant absorbing coating.However,the small particle size and large surface area largely cause se-vere oxidation while suffering high temperature,and consequently in recent years,contribute to the surge of research interest upon the oxidation resistance of carbonyl iron powders.This paper gives a brief description of the microwave absorbing mechanism of car-bonyl iron powders and the mechanism of improving the oxidation resistance,summarizes the preparation methods that benefit pro-duct's performance under high temperature oxidative environment,and finally ends with an outlook for this urgent and crucial re-search topic of microwave absorbing materials.