硅酸盐学报2021，Vol.49Issue(8)：1527-1542,16.DOI:10.14062/j.issn.0454-5648.20200868
氧化铝添加对硼硅酸盐结构和化学耐久性的影响
Effect of Alumina on Structure and Chemical Durability of Borosilicate Glasses
摘要
Abstract
The effect of alumina (Al2O3) on the chemical durability ofborosilicate glasses,70SiO2-(20-x)B2O3-xAl2O3-10Na2O,x=0,5,10,15 and 20 (molar fraction),in water,HCl and NaOH aqueous solutions,was investigated via liquid resistance tests.The chemical stability of aluminoborosilicate glass was discussed based on the glass structure,and the mechanism of chemical attack in different solutions was proposed.The results show that a significant enhancement in the chemical durability in water,HCl and NaOH aqueous solutions occurs after the incorporation of Al3+ into the oxide glass network.The structural analysis indicates that the relatively low chemical durability of the glass as x=0 is correlated to the presence of BO4 with three and four non-bridging oxygen(NBO) in the melts.Consequently,the glass is eroded more quickly during the attack of the aqueous solutions,resulting in a porous glass surface.The chemical durability can be improved due to the addition of Al2O3 into the glass network,suppressing the formation of BO4.关键词
化学耐久性/玻璃/氧化铝/结构/硼硅酸盐Key words
chemical durability/glass/alumina/strucutre/borosilicate分类
化学化工引用本文复制引用
MOHAMED A Ali,刘小峰,邱建荣..氧化铝添加对硼硅酸盐结构和化学耐久性的影响[J].硅酸盐学报,2021,49(8):1527-1542,16.基金项目
国家重点研发计划项目(2018YFB1107200) （2018YFB1107200）
国家自然科学基金项目(52050410326,51772270,617751). （52050410326,51772270,617751）
