Sodium-caesium electric field assisted ion exchange in a mixed-alkali (Na, K) lime silicate glass
Source abstract
Abstract
Abstract In this study, sodium exchange for caesium in a mixed alkali lime silicate glass was carried out using electric field-assisted ion exchange (EF-IE). Na/Cs exchange was realised by applying electric fields up to 2000 V cm−1 for 5 min on glass tubes immersed in molten CsNO3 at 460 °C. The chemical concentration profiles measured near the glass surface showed a bilayer concentration profile which comprises caesium and potassium-rich layers, the formation of the potassium-rich layer being associated with the different mobility of alkali ions. Nanoindentation analysis outlined that surface layer produced by Na/Cs ion-exchange is characterised by poorer mechanical properties than Na/K ion-exchanged layer. Raman spectroscopy investigation revealed that the Na/Cs ion-exchanged layer has a denser structure with respect to raw glass, this being responsible for the different mechanical properties.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Glass properties and applications · Nuclear materials and radiation effects · Luminescence Properties of Advanced Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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