【摘要】 用动态离子选择电极方法研究了以ThCl₄为基础氯化物玻璃的化学稳定性。随难溶化合物的引入,该玻璃的化学稳定性有所改善,且引入氯化物溶解度越低,改善越显著。 溶解过程小,电位及氯离子含量与时间的关系分别为:ln（E-E₂/E₁-E₂）=-K₁√t+K₂,lnln[Cl-]=-K₁√（?）+A。根据-ln（E-E₂/E₁-E₃）-√（?）关系图及K₁参数讨论了溶解过程机理,认为氯化物玻璃溶解过程与组成氯化物品体相似,并与组成氯化物的优先选择溶解有关。更多还原

【Abstract】 The chemical stability of the THCl₄ based chloride glasses was investigated using the dynamic ionic selective electrode method. The stability of the glasses was improved by introducing the insoluble chlorides. The lower the solubility of chlorides added, the more the degree of chemical stability improved.The relationship between electrical potential, Cl^- content and the time during the dissolving process are ln（E-E₂/E₁-E₃）=-K₁t^1/2+K₂ and lnln[Cl^-]=-K₁t^1/2+A respectively.The mechanism in dissolving process was disscussed based on the -ln（E-E₂/E₁-E₂）～t^1/2 diagram and the parameter K₁.1t is considered that the dissolving process of the chloride glasses is similar to that of the composed chloride crystals, and depends on the solubility of composed chloride optimumly selected.更多还原