电子元件与材料2026，Vol.45Issue(5)：586-592,7.DOI:10.14106/j.cnki.1001-2028.2026.1459
表面磷化对羰基铁耐蚀及电磁性能的影响分析
Analysis of the influence of surface phosphatization on corrosion resistance and electromagnetic properties of the carbony liron
张国瑞 1宋镇江 1李维佳 1郭仲前 1张鲁明1
作者信息
- 1. 成都佳驰电子科技股份有限公司,四川 成都 611730
- 折叠
摘要
Abstract
Carbonyl iron(CI)has been widely used in the field of electromagnetic wave absorption due to its excellent electromagnetic properties.However,CI will be corroded when it is used in harsh environments such as the ocean for a long time,which will affect the electromagnetic characteristics of the material.In recent years,phosphating treatment has been employed as an effective surface modification technique to enhance the corrosion resistance of iron-based materials.By applying phosphating treatment to CI powder,a phosphate passivation layer is formed on the surface of the material.This phosphate layer can significantly inhibit the electrochemical corrosion process of CI,through its physical barrier effect and chemical inertness.After 10 minutes of phosphating,the corrosion current density of CI decreased significantly from 29.4 A·cm-2 to 3.9 A·cm-2,and the corrosion rate dropped from 3.45 mm·a-1 to 0.46 mm·a-1.Simultaneously,this phosphate passivation layer acts as a high-resistance thin film,substantially reducing the leakage conductivity caused by direct contact between CI particles.Consequently,the relative permittivity of the material is modulated,with the real part decreasing from 33.9 to 25.5 and the imaginary part decreasing from 18.5 to 6.1.This adjustment in electromagnetic properties leads to an improvement in the traveling wave attenuation rate at 3 GHz from 17.6 dB·m-1 before phosphating to 34.4 dB·m-1 after phosphating for a coating with thickness of 2 mm.These findings provide a novel approach for corrosion protection and traveling wave suppression in complex environments such as shipboard applications.关键词
羰基铁/磷化/耐腐蚀/电磁性能Key words
carbonyl iron/phosphating/corrosion resistance/electronmagnetic properties分类
数理科学引用本文复制引用
张国瑞,宋镇江,李维佳,郭仲前,张鲁明..表面磷化对羰基铁耐蚀及电磁性能的影响分析[J].电子元件与材料,2026,45(5):586-592,7.
