粉煤灰制备辉石微晶玻璃及电子探针分析  

Preparation and electron probe micro-analysis of pyroxene glass-ceramics from coal fly-ash

作　　者：姚树玉[1] 韩野[1] 张伟伟[1] 姚玉随[1] 

机构地区：[1]山东科技大学材料科学与工程学院,山东青岛266510

出　　处：《材料热处理学报》2012年第5期10-14,共5页Transactions of Materials and Heat Treatment

基　　金：高技术研究发展计划项目(2006AA06Z381);山东省优秀中青年科学家奖励基金计划(BS2009CL027/BS2010CL037);青岛市科技计划项目(11-2-4-4(7)-jch)

摘　　要：以CaO-Al2O3-SiO2-10%MgO系相图为理论依据,采用熔融工艺制备辉石微晶玻璃。运用差热分析(DTA)、X射线衍射仪(XRD)、电子探针分析(EPMA)、能谱仪(EDS)、显微硬度等测试手段,研究了微晶玻璃的玻璃基体、晶相组成。结果表明810℃保温1 h、再以10℃/min的升温速率升至960℃保温1 h的热处理工艺,获得了以单一辉石Mg0.89Fe0.08Al0.20Cr0.04Ti0.01Ca0.76Na0.10Si1.92O6为晶相的微晶玻璃;基体玻璃中原子种类十分复杂,既有网络形成体,又有网络修饰体和网络中间体,由于[SiO4]四面体中Si-O(桥氧)键太少,玻璃网络断裂严重,该基体玻璃容易析晶。Pyroxene glass-ceramics were prepared by melting method on the basis of CaO-Al2O3-SiO2-10% MgO phase diagram.Crystalline phase and glass matrix of the glass-ceramics were investigated by means of differential thermal analysis（DTA）,X-ray diffraction（XRD）,electron microprobe analysis（EPMA）,energy dispersive spectrometer（EDS） and microhardness test.The results show that pyroxene glass-ceramics with single-crystal of Mg.89Fe.08Al.20Cr.04Ti.01Ca.76Na.10Si1.92O6 can be obtained in the sample heated at 810 ℃ for 1 h and subsequently heated to 960 ℃ holding 1 h with the heating rate of 10 ℃/min.The atoms in glass matrix is very complicated,not only including the network former,but also the modified cation and the intermediate former.Because of too little Si-O（bridging oxygen） in the ,disconnection of the glass network is serious,the matrix glass is easy of crystallization.

关 键 词：粉煤灰 微晶玻璃 熔融法 电子探针 辉石 

分 类 号：TG383[金属学及工艺—金属压力加工] TQ171.1[化学工程—玻璃工业]