摘要
以磁选铁精矿为主要原料,高岭土作为添加剂采用微波原位还原制备Fe/Fe_(2)SiO_(4)基金属陶瓷。概括介绍了利用微波加热原位还原磁选铁精矿研制铁基金属陶瓷的理论基础、主要技术路线和反应机理,结合XRD、SEM等分析测试方式,探究了高岭土添加含量对铁基金属陶瓷复合材料的物相、物理性能及微观组织的影响,为微波加热还原磁选铁精矿制备铁基多功能陶瓷材料的相关研究领域提供参考,对于促进矿产资源的高效综合利用具有重要的意义。结果表明:当烧结温度为835℃,保温时间为1 h,高岭土含量为15%时,制备的铁基金属陶瓷的综合性能最优,其主晶相为α-Fe,密度为5.56 g/cm^(3),维氏硬度值为7.35 GPa。
Fe/Fe_(2)SiO_(4)-based cermets were prepared with magnetic separation iron concentrate as the main raw material and kaolin as the additive by means of microwave in-situ reduction.The theoretical basis,main technical route,and reaction mechanism of iron-based cermets developed by using microwave heating in situ reductions of magnetic separation iron concentrates are summarized.Combined with XRD,SEM,and other analysis and testing methods,the effect of kaolin content on phase,physical properties,and microstructure of iron-based cermets composites had been explored.The results show that under conditions of Kaolin content at 15%,sintering at 835℃for 1 hour can make iron-based cermets composites achieve the best comprehensive properties,where dominant phase isα-Fe,its density is 5.56 g/cm^(3),and Vickers hardness is 7.35 GPa.
作者
高陈波
徐鹏飞
阮飞
李红霞
Gao Chenbo;Xu Pengfei;Ruan Fei;Li Hongxia(School of Materials and Metallurgy,Inner Mongolia University of Science and Technology,Baotou 014000,Inner Mongolia,China)
出处
《钢铁钒钛》
CAS
北大核心
2021年第3期135-142,共8页
Iron Steel Vanadium Titanium
基金
国家自然科学基金(51704172)
内蒙古科技大学创新基金(2016QDL-B27)。
