(1. 武汉理工大学 材料复合新技术国家重点实验室， 武汉 430070；
2. 武汉理工大学 材料科学与工程学院， 武汉 430070)
摘 要: 采用微波合成法制备了Fe2O3-MnO2-CuO-Co2O3体系红外辐射材料，测量了微波合成粉料的红外辐射性能，运用XRD，IR，SEM和图像分析等测试方法研究了合成粉料的结构和颗粒形态。结果表明，采用微波加热在1000℃保温10min和在900℃保温30min，均得到立方尖晶石结构的合成产物。与常规固相合成法相比，微波合成温度减低，反应时间缩短。合成粉料的颗粒细小均匀，平均粒度分别为1.175μm和1.814μm。微波合成粉料的红外辐射性能与采用常规固相合成法制备粉料的红外辐射率基本相当，其法向全辐射率均达到0.84。
关键字: 微波合成； Fe2O3-MnO2-CuO-Co2O3体系；颗粒形态； 红外辐射性能
Fe2O3-MnO2-CuO-Co2O3 system in
frared radiation materials
（1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing，
Wuhan University of Technology, Wuhan 430070, P.R.China；
2. Institute of Materials Science and Engineering,
Wuhan University of Technology, Wuhan 430070, P.R.China）
Abstract:Infrared radiation materials of Fe2O3-MnO2-CuO-Co2O33 system were synthesized by microwave heating, and infrared radiation properties of synthesized powders were measured. XRD, IR, SEM and image analysis were used to investigate the microstructure and morphology characteristics of powders. The results show that pow, ders with a cubic spinal structure were produced by heating at 1000℃ for 10*!min or at 900℃ for 30min in microwave field, indicating apparent decrease of synthesis temperature and time compared with conventional heating. Microwave-synthesized powders have significant advantages of small particle size and narrow particle size distribution over conventionally-synthesized powders. The powders synthesized at 1000℃ for 10min and at 900℃ for 30min in microwave field exhibit average particle sizes of 1.175μm and 1.814μm, respectively. No remarkable difference was detected between infrared radiation properties of powders synthesized by microwave heating and conventional heating respectively, which exhibit total emissivities of 0.84.
Key words: microwave synthesis; Fe2O3-MnO2-CuO-Co2O3 system; morphology of particles; infrared radiation properties
