Localized Corrosion of a Neutron Absorbing Ni-Cr-Mo-Gd Alloy

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The National Spent Nuclear Fuel Program, located at the Idaho National Laboratory (INL), has developed a new nickel-chromium-molybdenum-gadolinium structural alloy for storage and long-term disposal of spent nuclear fuel (SNF). The new alloy will be used for SNF storage container inserts for nuclear criticality control. Gadolinium has been chosen as the neutron absorption alloying element due to its high thermal neutron absorption cross section. This alloy must be resistant to localized corrosion when exposed to postulated Yucca Mountain in-package chemistries. The corrosion resistance properties of three experimental heats of this alloy are presented. The alloys performance are be compared to ... continued below

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Mizia, R.E.; Lister, T. E.; Pinhero, P. J. & Trowbridge, T. L. April 1, 2005.

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The National Spent Nuclear Fuel Program, located at the Idaho National Laboratory (INL), has developed a new nickel-chromium-molybdenum-gadolinium structural alloy for storage and long-term disposal of spent nuclear fuel (SNF). The new alloy will be used for SNF storage container inserts for nuclear criticality control. Gadolinium has been chosen as the neutron absorption alloying element due to its high thermal neutron absorption cross section. This alloy must be resistant to localized corrosion when exposed to postulated Yucca Mountain in-package chemistries. The corrosion resistance properties of three experimental heats of this alloy are presented. The alloys performance are be compared to Alloy 22 and borated stainless steel. The results show that initially the new Ni-Cr-Mo-Gd alloy is less resistant to corrosion as compared to another Ni-Cr-Mo-Gd alloy (Alloy 22); but when the secondary phase that contains gadolinium (gadolinide) is dissolved, the alloy surface becomes passive. The focus of this work is to qualify these gadolinium containing materials for ASME code qualification and acceptance in the Yucca Mountain Repository.

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  • Corrosion 2005,Houston, TX,04/03/2005,04/07/2005

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  • Report No.: INEEL/CON-05-02578
  • Grant Number: DE-AC07-99ID-13727
  • Office of Scientific & Technical Information Report Number: 911134
  • Archival Resource Key: ark:/67531/metadc883087

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Office of Scientific & Technical Information Technical Reports

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  • April 1, 2005

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 7, 2016, 4:24 p.m.

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Mizia, R.E.; Lister, T. E.; Pinhero, P. J. & Trowbridge, T. L. Localized Corrosion of a Neutron Absorbing Ni-Cr-Mo-Gd Alloy, article, April 1, 2005; [Idaho Falls, Idaho]. (digital.library.unt.edu/ark:/67531/metadc883087/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.