Corrosion assessment of refractory materials for high temperature waste vitrification

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Description

A variety of vitrification technologies are being evaluated to immobilize radioactive and hazardous wastes following years of nuclear materials production throughout the Department of Energy (DOE) complex. The compositions and physical forms of these wastes are diverse ranging from inorganic sludges to organic liquids to heterogeneous debris. Melt and off-gas products can be very corrosive at the high temperatures required to melt many of these waste streams. Ensuring material durability is required to develop viable treatment processes. Corrosion testing of materials in some of the anticipated severe environments is an important aspect of the materials identification and selection process. Corrosion ... continued below

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15 p.

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Marra, J. C.; Congdon, J. W. & Kielpinski, A. L. November 1995.

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Description

A variety of vitrification technologies are being evaluated to immobilize radioactive and hazardous wastes following years of nuclear materials production throughout the Department of Energy (DOE) complex. The compositions and physical forms of these wastes are diverse ranging from inorganic sludges to organic liquids to heterogeneous debris. Melt and off-gas products can be very corrosive at the high temperatures required to melt many of these waste streams. Ensuring material durability is required to develop viable treatment processes. Corrosion testing of materials in some of the anticipated severe environments is an important aspect of the materials identification and selection process. Corrosion coupon tests on typical materials used in Joule heated melters were completed using glass compositions with high salt contents. The presence of chloride in the melts caused the most severe attack. In the metal alloys, oxidation was the predominant corrosion mechanism, while in the tested refractory material enhanced dissolution of the refractory into the glass was observed. Corrosion testing of numerous different refractory materials was performed in a plasma vitrification system using a surrogate heterogeneous debris waste. Extensive corrosion was observed in all tested materials.

Physical Description

15 p.

Notes

INIS; OSTI as DE96001857

Source

  • 97. annual meeting of the American Ceramic Society, Cincinnati, OH (United States), 30 Apr - 1 May 1995

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  • Other: DE96001857
  • Report No.: WSRC-MS--94-0571P
  • Report No.: CONF-950401--30
  • Grant Number: AC09-89SR18035
  • Office of Scientific & Technical Information Report Number: 120846
  • Archival Resource Key: ark:/67531/metadc621855

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  • November 1995

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 9, 2016, 8:03 p.m.

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Marra, J. C.; Congdon, J. W. & Kielpinski, A. L. Corrosion assessment of refractory materials for high temperature waste vitrification, article, November 1995; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc621855/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.