摘要
以黄磷炉渣为主要原料,采用高温熔融法制备MgO掺杂的以Tb_(4)O_(7)为激活剂的黄磷炉渣发光微晶玻璃,通过DTA、FactSage模拟、XRD、SEM、稳态/瞬态荧光、CIE色度等探究MgO对Tb^(3+)-黄磷炉渣微晶玻璃热处理制度、析出晶相、样品形貌、发光性能和样品色度的影响.结果表明:MgO添加质量为1%~6%时,基础玻璃析晶温度显著降低,析晶活化能(E)呈现降低趋势,析晶效果显著;随着MgO添加,样品中钙铝黄长石(Ca_(2)Al_(2)SiO_(7))相含量减小,镁黄长石(Ca_(2)MgSi_(2)O_(7))相含量增加,与FactSage软件模拟结果基本一致.在激发和发射光谱中,绿光发射峰(543nm)强度随MgO掺杂量的增加呈先增加后降低的趋势,当MgO添加质量为2%时,微晶玻璃具有良好的绿光发射,光致发光强度最高,色坐标显示此时样品色度更优,说明一定浓度MgO掺杂对微晶玻璃的发光强度有较大的促进作用.
MgO doped yellow phosphorus slag luminescent glass-ceramics with Tb_(4)O_(7) as activator were prepared by high-temperature melting method,using yellow phosphorus slag as the main raw material.The effects of MgO on Tb^(3+)-yellow phosphorus slag glass-ceramics heat treatment system,precipitated crystal phase,sam⁃ple morphology,luminescence performance and sample shade were explored through DTA,FactSage simulation,XRD,SEM,steady state/transient fluorescence,CIE chromaticity and so on.The results show that when the mass addition amount of MgO is 1%—6%,the crystallization temperature of the base glass is significantly re⁃duced,the crystallization activation energy(E)shows a decreasing trend,and the crystallization effect is signifi⁃cant.With the addition of MgO,the content of calcium aluminite(Ca_(2)Al_(2)SiO_(7)) phase in the sample decreases,and the content of magnesium anhydrite(Ca_(2)MgSi_(2)O_(7)) phase increases,which is basically consistent with the simulation results of FactSage software.In the excitation and emission spectra,the intensity of the green light e⁃mission peak(543 nm)first increases and then decreases with the increase of the MgO doping amount.When the MgO mass addition is 2%,the glass-ceramics have good green light emission.Photoluminescence intensity is the highest,and the color coordinates show that the sample chromaticity is better at this time,indicating that a certain concentration of MgO doping has a greater promotion effect on the luminescence intensity of the glass-ceramics.
作者
李文斌
黄小凤
杨熙斌
马丽萍
陈茂生
鲍银珠
刘嘉鑫
LI Wenbin;HUANG Xiaofeng;YANG Xibin;MA Liping;CHEN Maosheng;BAO Yinzhu;LIU Jiaxin(Faculty of Environmental Science and Enginerring,Kunming University of Science and Technology,Kunming 650500,China)
出处
《昆明理工大学学报（自然科学版）》
北大核心
2022年第4期127-135,共9页
Journal of Kunming University of Science and Technology(Natural Science)
基金
国家重点研发计划项目(2018YFC1801701)。
关键词
MGO
稀土离子Tb^(3+)
黄磷炉渣
发光
析晶
MgO
rare earth ion Tb^(3+)
yellow phosphorus slag
photoluminescence
crystallization
