Corrosion of glass-bonded sodalite as a function of pH and temperature.

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This paper reports the results of corrosion tests with monoliths of sodalite, binder glass, and glass-bonded sodalite, a ceramic waste form (CWF) that is being developed to immobilize radioactive electrorefiner salt used to condition spent sodium-bonded nuclear fuel. These tests were performed with dilute pH-buffered solutions in the pH range of 5-10 at temperatures of 70 and 90 C. The pH dependence of the forward dissolution rates of the CWF and its components have been determined. The pH dependence of the dissolution rates of sodalite, binder glass, and glass-bonded sodalite are similar to the pH dependence of dissolution rate of ... continued below

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9 p.

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Morss, L. R.; Stanley, M.; Tatko, C. & Ebert, W. L. November 29, 1999.

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Description

This paper reports the results of corrosion tests with monoliths of sodalite, binder glass, and glass-bonded sodalite, a ceramic waste form (CWF) that is being developed to immobilize radioactive electrorefiner salt used to condition spent sodium-bonded nuclear fuel. These tests were performed with dilute pH-buffered solutions in the pH range of 5-10 at temperatures of 70 and 90 C. The pH dependence of the forward dissolution rates of the CWF and its components have been determined. The pH dependence of the dissolution rates of sodalite, binder glass, and glass-bonded sodalite are similar to the pH dependence of dissolution rate of borosilicate nuclear waste glasses, with a negative pH dependence in the acidic region and a positive pH dependence in the basic region. Our results on the forward dissolution rates and their temperature and pH dependence will be used as components of a waste form degradation model to predict the long-term behavior of the CWF in a nuclear waste repository.

Physical Description

9 p.

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INIS; OSTI as DE00750472

Medium: P; Size: 9 pages

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  • MRS '99 Fall Meeting, Boston, MA (US), 11/29/1999--12/03/1999

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  • Report No.: ANL/CMT/CP-99408
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 750472
  • Archival Resource Key: ark:/67531/metadc708128

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • November 29, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 11, 2017, 7:32 p.m.

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Morss, L. R.; Stanley, M.; Tatko, C. & Ebert, W. L. Corrosion of glass-bonded sodalite as a function of pH and temperature., article, November 29, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc708128/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.