Na-Agβ-Al_2O_3陶瓷中的离子交换和迁移

Ion Exchange and Ion Transport in Na-Ag Beta Alumina Ceramic

利用称重和电子探针分析方法对β-Al_2O_3陶瓷中 Na^+-Ag^+离子交换进行了研究。扩散过程的拟合计算及所得结果与样品重量和浓度剖图的比较表明:该离子交换过程为扩散控制,并发现在 Na-Ag 混合 β-Al_2O_3中钠离子比银离子更易迁移。

Na-Ag ion exchange in beta alumina ceramic has been investigated by weight gain and electron microprobe analysis.Simulating calculation and its comparisonwith the experimental weighing and concentration profile data indicate a diffusiondominating ion exchange process.In the mixed Na-Ag beta alumina,the sodiumion is found to be more mobile than the silver ion.