Comparison of the layer structure of vapor phase and leached SRL glass by use of AEM
- 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 40C for 4 years with those leached at 90C 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.
- Research Organization:
- Materials Research Society, Pittsburgh, PA (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 138163
- Report Number(s):
- CONF-891129-; TRN: 91:023634
- Resource Relation:
- Conference: 13. symposium scientific basis for nuclear waste management, Boston, MA (United States), 27 Nov - 2 Dec 1989; Other Information: PBD: 1990; Related Information: Is Part Of Scientific basis for nuclear waste management 13; Oversby, V.M. [ed.] [Lawrence Livermore National Lab., CA (USA)]; Brown, P.W. [ed.] [Pennsylvania State Univ., University Park, PA (USA)]; PB: 784 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Secondary phase formation and the microstructural evolution of surface layers during vapor phase alteration of the French SON 68 nuclear waste glass at 200{degrees}C
Analytical electron microscopy study of surface layers formed on the french SON68 nuclear waste glass during vapor hydration at 200{degree}C.
Related Subjects
36 MATERIALS SCIENCE
GLASS
LEACHING
PHASE STUDIES
HIGH-LEVEL RADIOACTIVE WASTES
RADIOACTIVE WASTE DISPOSAL
AGING
CORROSIVE EFFECTS
ELECTRON MICROSCOPY
HUMIDITY
HYDRATION
SAVANNAH RIVER PLANT
SCANNING ELECTRON MICROSCOPY
SERVICE LIFE
TIME DEPENDENCE
TITANIUM
TUFF
URANIUM
WATER
YUCCA MOUNTAIN
Yucca Mountain Project