通过耐液性试验,研究了添加Al2O3对硼硅酸盐玻璃[70SiO2-(20-x)B2O3-xAl2O3-10Na2O,x=0、5、10、15、20,摩尔分数]的抗水、盐酸和氢氧化钠水溶液腐蚀性能的影响,讨论了铝硅酸盐玻璃在不同化学结构下的化学侵蚀机理.结果 表明:在氧化玻璃网络中加入Al3+后,该玻璃在水、HCl和NaOH水溶液中的化学耐久性显著提高;不含Al2O3的玻璃化学耐久性较差与熔融玻璃中存在含3个和4个非桥氧(NBO)的BO4有关,在水溶液侵蚀后,玻璃被更快地侵蚀,形成多孔玻璃表面.在非晶态玻璃网络中添加Al2O3,抑制了BO4的生成,提高了材料的化学耐久性.“,”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.