ELECTROCHEMICAL STUDIES SIMULATING CORROSION OF NICKEL-BASE ALLOYS IN THIN LAYERS OF PARTICULATES

Healey, C C; Bannon, T; Carcea, A G; Newman, R C

doi:10.2172/859184

Title: ELECTROCHEMICAL STUDIES SIMULATING CORROSION OF NICKEL-BASE ALLOYS IN THIN LAYERS OF PARTICULATES

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Abstract

Highly corrosion-resistant, nickel-chromium-molybdenum Alloy 22 is designated for use for containment of high-level nuclear waste at the proposed Yucca Mountain Repository. At the University of Toronto and several other North American universities, background scientific studies are in progress to improve our understanding of the possible corrosion mechanisms that might affect this class of alloys. We are using less-resistant alloys, beginning with binary Ni-22CrY to study the stability of localized corrosion, such as pitting, in thin layers of moist dust. Relative humidity and temperature are controlled. The arrangement of miniature sensor electrodes (NiCr, Pt, Ag/AgCl) to carry out meaningful electrochemistry in thin layers has been optimized. Various possible pitfalls in such measurements have been identified. The effect of nitrate ion on corrosion behavior in thin layers of particulate is compared with its effect in bulk liquid environments, and the differences quantified and explained.

Authors:: Healey, C C; Bannon, T; Carcea, A G; Newman, R C

Publication Date:: Fri Jul 01 00:00:00 EDT 2005

Research Org.:: YMP (Yucca Mountain Project, Las Vegas, Nevada)

Sponsoring Org.:: USDOE

OSTI Identifier:: 859184

Report Number(s):: NA
MOL.20050725.0320 DC#44843; TRN: US0600538

DOE Contract Number:: NA

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; ALLOYS; CONTAINMENT; CORROSION; ELECTROCHEMISTRY; ELECTRODES; HUMIDITY; NITRATES; PARTICULATES; RADIOACTIVE WASTES; STABILITY; YUCCA MOUNTAIN

Citation Formats


                    Healey, C C, Bannon, T, Carcea, A G, and Newman, R C. ELECTROCHEMICAL STUDIES SIMULATING CORROSION OF NICKEL-BASE ALLOYS IN THIN LAYERS OF PARTICULATES.  United States: N. p., 2005. 
        Web.  doi:10.2172/859184.

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                    Healey, C C, Bannon, T, Carcea, A G, & Newman, R C. ELECTROCHEMICAL STUDIES SIMULATING CORROSION OF NICKEL-BASE ALLOYS IN THIN LAYERS OF PARTICULATES.  United States.  https://doi.org/10.2172/859184

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                    Healey, C C, Bannon, T, Carcea, A G, and Newman, R C. 2005.  
        "ELECTROCHEMICAL STUDIES SIMULATING CORROSION OF NICKEL-BASE ALLOYS IN THIN LAYERS OF PARTICULATES".  United States.  https://doi.org/10.2172/859184.  https://www.osti.gov/servlets/purl/859184.

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@article{osti_859184,

  title        = {ELECTROCHEMICAL STUDIES SIMULATING CORROSION OF NICKEL-BASE ALLOYS IN THIN LAYERS OF PARTICULATES},

  author       = {Healey, C C and Bannon, T and Carcea, A G and Newman, R C},

  abstractNote = {Highly corrosion-resistant, nickel-chromium-molybdenum Alloy 22 is designated for use for containment of high-level nuclear waste at the proposed Yucca Mountain Repository. At the University of Toronto and several other North American universities, background scientific studies are in progress to improve our understanding of the possible corrosion mechanisms that might affect this class of alloys. We are using less-resistant alloys, beginning with binary Ni-22CrY to study the stability of localized corrosion, such as pitting, in thin layers of moist dust. Relative humidity and temperature are controlled. The arrangement of miniature sensor electrodes (NiCr, Pt, Ag/AgCl) to carry out meaningful electrochemistry in thin layers has been optimized. Various possible pitfalls in such measurements have been identified. The effect of nitrate ion on corrosion behavior in thin layers of particulate is compared with its effect in bulk liquid environments, and the differences quantified and explained.},

  doi          = {10.2172/859184},

  url          = {https://www.osti.gov/biblio/859184},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Fri Jul 01 00:00:00 EDT 2005},

  month        = {Fri Jul 01 00:00:00 EDT 2005}

}

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