Comparison of the layer structure of vapor phase and leached SRL glass by use of AEM [analytical electron microscopy]
- Argonne National Lab., IL (USA)
- McCrone Environmental Services, Inc., Westmont, IL (USA)
Test samples of 131 type glass that have been reacted for extended time periods in water vapor atmospheres of different relative humidities and in static leaching solution have been examined to characterize the reaction products. Analytical electron microscopy (AEM) was used to characterize the leached samples, and a complicated layer structure was revealed, consisting of phases that precipitate from solution and also form within the residual glass layer. The precipitated phases include birnes-site, saponite, and an iron species, while the intralayer phases include the U-Ti containing phase brannerite distributed within a matrix consisting of bands of an Fe rich montmorillonite clay. Comparison is made between samples leached at 40{degrees}C for 4 years with those leached at 90{degrees}C for 3-1/2 years. The samples reacted in water vapor were examined with scanning electron microscopy and show increasing reaction as both the relative humidity and time of reaction increases. These samples also contain a layered structure with reaction products on the glass surface. 15 refs., 5 figs.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 137676
- Report Number(s):
- CONF-891119-106; ON: DE90007789; TRN: 90:008969
- Resource Relation:
- Conference: Materials Research Society fall meeting, Boston, MA (United States), 27 Nov - 2 Dec 1989; Other Information: PBD: [1989]
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GLASS
PHASE STUDIES
WATER VAPOR
CHEMICAL REACTIONS
ELECTRON MICROSCOPY
HIGH-LEVEL RADIOACTIVE WASTES
UNDERGROUND DISPOSAL
WATER
TEMPERATURE EFFECTS
COMPARATIVE EVALUATIONS
LEACHING
HUMIDITY
IRON
URANIUM
TITANIUM
BRANNERITE
MONTMORILLONITE
CLAYS
MATHEMATICAL MODELS
YUCCA MOUNTAIN
TUFF
Yucca Mountain Project