Effect of Fe_(2)O_(3)on the Structure,Physical Properties and Crystallization of CaO-Al_(2)O_(3)-SiO_(2)Glass  

作　　者：张峰 XIONG Dehua 谢俊 张继红 HAN Jianjun CHEN Dequan WEN Zhongquan FAN Zhenhua CHEN Lina SUN Tengfei ZHANG Feng;XIONG Dehua;XIE Jun;ZHANG Jihong;HAN Jianjun;CHEN Dequan;WEN Zhongquan;FAN Zhenhua;CHEN Lina;SUN Tengfei(State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China;Hepu Research Center for Silicate Materials Industry Technology,Beihai 536100,China;Hainan Institute of Wuhan University of Technology,Sanya 430079,China;Shenzhen Research Institute of Wuhan University of Technology,Shenzhen 518000,China;Chongqing Polycomp Inter-national Corporation,Chongqing 400400,China)

机构地区：[1]State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China [2]Hepu Research Center for Silicate Materials Industry Technology,Beihai 536100,China [3]Hainan Institute of Wuhan University of Technology,Sanya 430079,China [4]Shenzhen Research Institute of Wuhan University of Technology,Shenzhen 518000,China [5]Chongqing Polycomp Inter-national Corporation,Chongqing 400400,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2024年第4期954-961,共8页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Key Research and Development Program of Han Nan province(No.ZDYF2021GXJS027);the Project of Sanya Yazhou Bay Science and Technology City(No.SCKJJYRC-2022-44);the Shenzhen Virtual University Park(SZVUP)Free Exploration Basic Research Project(No.2021Szvup107)。

摘　　要：The calcium aluminosilicate-based glasses(CaO-Al_(2)O_(3)-SiO_(2),CAS)with different Fe_(2)O_(3)content(0.10wt%,0.50wt%,0.90wt%,and 1.30wt%)were prepared by traditional melt-quenching method.The glass network structure,thermal and mechanical properties,and crystallization behavior changes were investigated by nuclear magnetic resonance spectrometer,Fourier-transform infrared spectro-photometer,X-ray diffractometer,differential scanning calorimetry and field emission scanning electron microscope measurements.The change of Q^(n)in glass structures reveals the glass network connectivity decreases due to the increasing content of Fe_(2)O_(3)addition,resulting in the increasing of non-bridging number in glass structure.The glass densities slightly rise from 2.644 to 2.681 g/cm^(3),while Vickers’s hardness increases at first,from 6.469 to 6.901 GPa,then slightly drops to 6.745 GPa,with Fe_(2)O_(3)content increase.There is almost no thermal expansion coefficient change from different Fe_(2)O_(3)content.The glass transmittance in visible range gradually decreases with higher Fe_(2)O_(3)content,resulting from the strong absorption of Fe^(2+)and Fe^(3+)ions.The calculated activation energy from thermal analysis results first decreases from 282.70 to 231.18 kJ/mol,and then increases to 244.02 kJ/mol,with the Fe_(2)O_(3)content increasing from 0.10wt%to 1.30wt%.Meanwhile,the maximum Avrami constant of 2.33 means the CAS glasses exhibit two-dimensional crystallization.All of the CAS glass-ceramics samples contain main crystal phase of anorthite,the microstructure appears lamellar and columnar crystals.

关 键 词：calcium aluminosilicate glass network structure physical properties CRYSTALLIZATION 

分 类 号：TQ171.1[化学工程—玻璃工业]