摘要
利用气氛烧结工艺,在烧结温度950℃、等静压压力200 MPa条件下,以白云鄂博尾矿为主要原料制备了Fe/辉石基复合材料。采用DSC、XRD、SEM、单边切口梁法等研究了Fe含量在0~40 wt%范围内变化对所研究复合材料显微结构及性能的影响。结果表明:Fe/辉石基复合材料主晶相为辉石相,第二相为金属Fe和少量SiO2。随着Fe含量的增加,金属铁第二相含量升高,密度随之上升,样品的断裂韧性先减小后增加。
Fe/Augite matrix composites were prepared using atmospheric sintering from Baiyun Ebo tailings as the main raw materials at a sintering temperature of 950℃and an isostatic pressure of 200 MPa.The effects of Fe content in the range of 0~40 wt%on the microstructure and properties of the studied composite materials were studied using DSC,XRD,SEM,and single-side notched beam methods.The results show that the main crystal phase of the Fe/Augite matrix composite is the augite phase,and the second phase is Fe phase,and a small amount of SiO2.With the Fe content increasing,the second phase content of iron increases,and the density increases accordingly,and the fracture toughness of the sample decreases firstly and then increases.
作者
陈伟丽
韩永全
贾晓林
徐文策
CHEN Weili;HAN Yongquan;JIA Xiaolin;XU Wence(School of Materials Science&Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;School of Science,Inner Mongolia University of Science&Technology,Baotou 014010,China;State key laboratory,Inner Mongolia University of Science&Technology,Baotou 014010,China;Institute of Mining Engineering,Inner Mongolia University of Science&Technology,Baotou 014010,China)
出处
《中国陶瓷》
CAS
CSCD
北大核心
2020年第6期14-19,共6页
China Ceramics
基金
国家重点基础研究发展计划(973计划)(2012CB722802)。
关键词
气氛烧结
辉石相
断裂韧性
等静压
Atmosphere sintering
Augite phase
Fracture toughness
Isostatic pressure
