Title

Sodium Diffusion in Glass: II, Mixed Na-K Silicate Glasses

Abstract

The isotope effect for 22Na/24Na diffusion was used to investigate the sodium ion transport mechanism in mixed Na-K silicate glasses. A combined vacancy-interstitialcy mechanism provided the best agreement with the experimental 22Na/24Na isotope effect data. At low temperatures sodium diffusion occurs predominantly by 2-atom interstitialcy jumps, but with increasing temperature an increasing fraction of the ions diffuse by a single-atom vacancy mechanism.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Carrier mobility; Diffusion; Metal ions; Silicates; Increasing temperatures; Isotope effect; Low temperatures; Silicate glass; Single atoms; Sodium ions; Vacancy mechanisms

International Standard Serial Number (ISSN)

0002-7820; 1551-2916

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1977 Wiley-Blackwell, All rights reserved.

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