离子交换增强熔盐添加剂除杂机理的研究  

Study on Impurity Removing Mechanism of Ion-exchange Strengthening Additive

作　　者：刘沈龙[1] 张保军[1] 黄友奇[1] 祁丹[1] 蓝知惟[1] 

机构地区：[1]中国建筑材料科学研究总院玻璃科学研究所,北京100024

出　　处：《材料导报》2013年第10期120-123,共4页Materials Reports

基　　金：国家自然科学基金(50972136)

摘　　要：通过分析离子交换增强玻璃表面K+浓度、表面应力、交换层深度和熔盐成分变化,研究了不同浓度Ca2+对K+-Na+交换的影响以及添加剂对熔盐中杂质离子作用的机理。结果表明:K+-Na+交换速率随熔盐中Ca2+浓度的增加而降低,在失活的熔盐中添加KHCO3可消除Ca2+对K+-Na+交换的不利影响。Through analyzing the potassium concentration profiles, the surface stress, the exchange layer depth of ion-exchange strengthening glass and the molten salt composition change, the effect of different concentration Ca^2＋on K^＋-Na^＋ ion-exchange as well as additive on the impurity ion were studied. The results show that K^＋-Na^＋ ion-exchange rate decreases as the concentration of impurity ion increases, the detrimental effect on ion-exchange can be re- duced by adding KHCOa in this deactivated molten salt.

关 键 词：钠钙硅玻璃 离子交换 KNO3熔盐 添加剂 

分 类 号：TQ171[化学工程—玻璃工业]