Glass reactivity in aqueous solutions

D. R. Baer, L. R. Pederson, G. L. McVay

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18 Citations (Scopus)

Abstract

Surface analysis methods have been incorporated as part of several studies concerning the mechanisms and amount of glass leaching in aqueous solutions. The reactivity of simple glasses with water has been determined by measuring the uptake of D and lsO in soda-lime silicate glass, amorphous and crystalline silica, and amorphous and crystalline albite leached in D2 lsO at 90 °C as a function of time. The concentrations and profiles of lsO and D going into the glass were determined using nuclear reaction analysis and compared to the material leached from the glass as determined by solution and Rutherford backscattering (RBS) analyses. The measured ratio of D/ 180 does not follow any one simple uptake model. Reaction layers formed on simulated nuclear waste glasses containing Pu have also been measured using RBS. Specimens were leached in deionized water or brine at 90 °C. The concentration of Pu on the specimens generally decreased with time. Analysis of the leaching solution indicated that the rate of Pu release was considerably less than that of the glass matrix. The results support the buildup of a surface layer covering the Pu.

Original languageEnglish
Pages (from-to)738-743
Number of pages6
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume2
Issue number2
DOIs
Publication statusPublished - 1984
Externally publishedYes

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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