铁钴铬合金-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

作　　者：陈涛 赵素玲 徐逸凡 江源源 赵志高[4] 黄贻苍 李维[1] 陈志宏 CHEN Tao;ZHAO Suling;XU Yifan;JIANG Yuanyuan;ZHAO Zhigao;HUANG Yicang;LI Wei;CHEN Zhihong(State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,Hubei,China;Center for Material Research and Analysis,Wuhan University of Technology,Wuhan 430070,Hubei,China;School of Science,Wuhan University of Technology,Wuhan 430070,Hubei,China;Wuhan Second Ship Design and Research Institute,Wuhan 430205,Hubei,China)

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070 [2]武汉理工大学材料研究与测试中心,湖北武汉430070 [3]武汉理工大学理学院,湖北武汉430070 [4]武汉第二船舶设计研究所,湖北武汉430205

出　　处：《济南大学学报（自然科学版）》2023年第5期639-647,共9页Journal of University of Jinan(Science and Technology)

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

摘　　要：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300 h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25 h内从6.19 MPa迅速增大到14.16 MPa,随后减小,热处理300 h后降到5.29 MPa;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300 h后保持完整,吸波性能稳定。Fe-Co-Cr alloy particles were laminated and modified,and Fe-Co-Cr alloy-silicone resin composite coatings were prepared.Scanning electron microscopy,universal testing machine and vector network analyzer were used to study the crystal grain structure,thermal service behavior and mechanism of the Fe-Co-Cr alloy,adhesion and absorbing properties of the coatings.The results show that the crystal grain structure and soft magnetic properties of Fe-Co-Cr alloy remain stable after heat treatment at 300℃for 300 h.The adhesion of the coating shows a significant post-curing effect,which rapidly increases from 6.19 MPa to 14.16 MPa within 25 h of heat treatment,and then decreases to 5.29 MPa after 300 h of heat treatment.The increase of adhesion is the result of the increase of resin crosslinking degree and d ensity,while the decrease is related to the thermal oxidation of silicone molecular chain.The composite coating remains intact and stable absorption performance after heat treatment at 300℃for 300 h.

关 键 词：耐温吸波涂层 铁钴铬合金 有机硅树脂 电磁性能 

分 类 号：TB35[一般工业技术—材料科学与工程]