2023年 05期

铁钴铬合-有机硅耐温吸波涂层的制备及性能

Preparation and Properties of Fe-Co-Cr Alloy-Silicone Resin Heat⁃resistance Microwave Absorption Coatings


摘要(Abstract):

对铁钴铬合金颗粒进行片化处理和表面改性,制备铁钴铬合金-有机硅复合吸波涂层,采用扫描电子显微镜 、万能试验机和矢量网络分析仪等研究了铁钴铬合金晶粒结构、涂层附着力和吸波性能的热服役行为和机制。结果表明:在300 ℃ 热处理300h后,铁钴铬合金晶粒结构和软磁性能保持稳定;涂层附着力呈现显著的后固化效应,热处理25h内从6.19MPa迅速增大到14.16MPa, 随后减小,热处理300h后降到5.29MPa;涂层附着力的增大是树脂交联度和密度增大的结果,减小则与有机硅分子链的热氧化有关;复合涂层在300 ℃ 热处理300h后保持完整,吸波性能稳定。

关键词(KeyWords): 耐温吸波涂层;铁钴铬合金;有机硅树脂; 电磁性能

基金项目(Foundation): 国家自然科学基金项目(52071239) ; 航空科学基金项目(2018ZF65002)

作者(Author): 陈涛,赵素玲,徐逸凡,江源源,赵志高,黄贻苍,李维,陈志宏

DOI: 10.13349/j.cnki.jdxbn.20230808.001

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