非晶合金填料及其电磁屏蔽涂层性能的影响因素

发布时间：2018-05-21 13:29

本文选题：电磁屏蔽涂层 + 软磁非晶合金　；参考：《功能材料》2015年24期

【摘要】：软磁非晶合金因其优良的磁特性、耐蚀性及机械性能,在电磁屏蔽领域得到了广泛的关注与应用。在简要介绍非晶合金结构和性能特点的基础上,以软磁非晶合金填料为研究对象,系统地总结了影响其软磁特性和耐蚀性的因素;并从软磁非晶合金复合电磁屏蔽涂层开发的角度出发,讨论了影响涂层电磁屏蔽效能的主要因素。大量研究表明,改善非晶合金的软磁特性乃至电磁屏蔽性能,主要通过提高非晶形成能力、增强耐蚀性能和细化晶粒3个途径实现。适当添加合金元素、对合金粉末进行表面包覆或形成双层镀膜结构均可起到提高电磁屏蔽效能的作用。另外,对于电磁屏蔽涂层来说,使用片状填料形成良好的导电网络、选用适当的偶联剂与填料配合获得最佳的分布状态均是提高涂层的电磁屏蔽效能的关键。最后对今后的研究方向作了探讨。
[Abstract]:Soft magnetic amorphous alloys have been widely used in electromagnetic shielding due to their excellent magnetic properties, corrosion resistance and mechanical properties. On the basis of a brief introduction of the structure and properties of amorphous alloys, the factors affecting the soft magnetic properties and corrosion resistance of soft magnetic amorphous alloy fillers are systematically summarized. From the point of view of the development of soft magnetic amorphous alloy composite electromagnetic shielding coating, the main factors affecting the electromagnetic shielding efficiency of the coating are discussed. A large number of studies show that the improvement of the soft magnetic properties and even the electromagnetic shielding properties of amorphous alloys is mainly achieved by improving the amorphous forming ability, enhancing the corrosion resistance and refining the grain size. The effect of electromagnetic shielding can be improved by adding alloying elements to the surface of alloy powder or forming double layer coating structure. In addition, for the electromagnetic shielding coating, it is the key to improve the electromagnetic shielding efficiency to form a good conductive network by using sheet filler, and to select the appropriate coupling agent and filler to obtain the best distribution state. Finally, the future research direction is discussed.
【作者单位】：北京科技大学腐蚀与防护中心;
【基金】：国家重点基础研究发展计划(973计划)资助项目(2014CB643300) 国家自然科学基金重点资助项目(51133009)
【分类号】：TG139.8

【参考文献】