(1. 西華大學(xué) 材料科學(xué)與工程學(xué)院，成都 610039;
2. 電子科技大學(xué) 國家電磁輻射控制材料工程技術(shù)研究中心，成都 610054)
摘 要: 以不同含量的Ti原子取代FeSiAl合金中的Al原子，采用機械合金化方法，制備Fe85Si9.6(Al1-xTix)5.4合金粉體。結(jié)合固體與分子經(jīng)驗電子理論，計算4種合金粉體的電子結(jié)構(gòu)的變化，并測試粉體的形貌、物相和電磁參數(shù)，計算電磁波反射損耗率。結(jié)果表明:Ti原子的加入可以細化晶粒，主要增加(111)方向上的共價電子對數(shù)，Ti取代量為0.66時，具有理想的吸波性能。
關(guān)鍵字: FeSiAlTi合金; EET理論;電磁參數(shù);反射損耗;機械合金化
（1. School of Materials Science and Engineering, Xihua University, Chengdu 610039, China;
2. National Engineering Research Center of Electromagnetic Radiation Control Materials,
University of Electronic Science and Technology of China, Chengdu 610054, China）
Abstract:Fe85Si9.6 (Al1-xTix)5.4 alloy powders were prepared by mechanical alloying with various Ti contents instead of Al atoms in FeSiAl alloy. The electronic structure evolutions of four kinds of alloy powders were calculated with the empirical electron theory of solids and molecules. The morphology, phase and electromagnetic parameters of powders were tested, and the electromagnetic wave reflection losses were calculated. The results show that the addition of Ti can refine the grain and increase the number of covalent electrons in the (111) direction, and the ideal absorbing performance among the four powders can be gotten when the Ti content is 0.66.
Key words: FeSiAlTi alloy; EET theory; electromagnetic parameter; reflection loss; mechanical alloying
