摘要
在服役温度范围内研究羰基铁复合吸波涂层材料微观结构和性能演变对揭示其断裂失效机理和优化工艺参数具有十分重要的意义。采用空气喷涂法制备了羰基铁/聚硅氮烷吸波涂层,并在550℃下进行不同时间的热处理,分析热处理前后涂层的红外吸收性质、物相组成、微观形貌、硬度变化;采用万能试验机测试了热处理前后吸波涂层的结合性能。结果表明,由于热处理时间的延长,在高温和氧气影响下羰基铁热解产生以α-Fe_(2)O_(3)为主要物相的纳米花结构;在550℃热处理80 h后,涂层的平均结合强度达到最高值(11.88±1.10) MPa;热处理400 h后,涂层的平均维氏硬度达到最高值104.56HV±22.97HV。
It is of great significance to study the microstructure and properties evolution of carbonyl iron composite absorbing coating materials in the service temperature range to reveal the failure mechanism and optimize the process parameters.In this work,the carbonyl iron/polysilazane wave-absorbing coatings were prepared by the air spraying method and heat-treated at 550℃for different time.The properties of infrared absorption,phase composition,microstructure,and hardness of the coating before and after heat treatments were analyzed.The tensile tests were carried out by a universal testing machine.The results show that the average adhesive strength of the coating reaches(11.88±1.10)MPa at 550℃for 80 h,the hardness is 104.56HV±22.97HV for 400 h.
作者
邓妍
洪森
曹湘杰
蒋曜年
戴翠英
毛卫国
张有为
刘平桂
DENG Yan;HONG Sen;CAO Xiangjie;JIANG Yaonian;DAI Cuiying;MAO Weiguo;ZHANG Youwei;LIU Pinggui(School of Materials Science and Engineering,Xiangtan University,Xiangtan 411105,Hunan,China;School of Materials Science and Engineering,Changsha University of Science&Technology,Changsha 410014,China;Stealth&Coatings Institute,AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China)
出处
《材料导报》
EI
CSCD
北大核心
2024年第1期148-153,共6页
Materials Reports
基金
国家自然科学基金(11772287)
国家科技重大专项(J2019-VI-0017-0132)
国家重点研发计划(2021YFB3702304-4)
国防基础科研项目(WDZC20195500501)。
关键词
羰基铁粉
吸波涂层
花状结构
硬度
结合强度
carbonyl iron
wave absorbing coating
flower-like structure
hardness
adhesive strength
