摘要
研究了多晶 Na-β″-Al_2O_3的 Ag 离子交换动力学,采用一维双面扩散模型处理,求得离子交换过程中 Na^+、Ag^+的互扩散系数.样品的形貌和结构采用 EPMA、SEM、XRD 等分析技术进行观察和分析.测试了 Na-β″-Al_2O_3和 Ag-β″-Al_2O_3及部分 Ag^+交换的 Na/Ag-β″-Al_2O_3样品的电导率,并进行了理论分析.
The paper reports the kinetic process of silver ions exchange for polycrystalline Na-β″-Al_2O_3.The inter-diffusion coefficients in the process of Ag-Na exchange were calculated withan one dimension two side diffusion model.Microstructures of the samples were observed andanalysed by EPMA,SEM and XRD.The results of conductivity measurements for sampleswith Na^+,Ag^+ and Na^+ -Ag^+ modile ions were presented and explained.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第2期175-188,共14页
Journal of Inorganic Materials
基金
国家自然科学基金资助课题
关键词
互扩散系数
电导率
氧化铝
钠
Polycrystalline Na(Ag)-β″-Al_2O_3
Inter-diffusion coefficient
Conductivity
