An Approach to Understanding the Mixed Alkali Effect.

Abstract

An approach to understanding the mixed alkali effect in binary ionic oxide glasses is proposed. It is based on an expression for the composition dependence of activated processes which is inherently cooperative, and employs the regular solution model for the specification of this dependence. A detailed molecular-level model, using spectroscopic data, is introduced to obtain an estimate of the magnitude of the parameters of the approach. It is shown that the composition dependences of the non-linearly varying properties of mixed alkali systems, including both the measured properties and the exponential and pre-exponential factors obtained from their temperature dependence, can be understood using this approach. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 26, 1977
Accession Number
ADA051156

Entities

People

  • George B. Rouse
  • Jeffrey M Gordon
  • William M. Risen Jr

Organizations

  • Brown University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alkali Glass
  • Chemical Engineering
  • Chemistry
  • Engineering
  • Equations
  • Free Energy
  • Glass
  • Glass Transition Temperature
  • Heat Of Activation
  • Materials
  • Materials Laboratories
  • Materials Science
  • Military Research
  • Mining Engineering
  • New York
  • Physical Properties
  • Transport Properties

Readers

  • Materials Science and Engineering.
  • Polymer Science and Technology
  • Theoretical Analysis.