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Oxidation protection of 20Cr-25Ni-Nb stainless steel at 1300°C

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Abstract

Enhanced environmental protection of chromia-forming advanced metallic alloys at normal operating temperature, typically ≲900°C, may be provided by two well-established approaches—incorporation of reactive elements into the protective oxide scale or an amorphous ceramic coating acting as a diffusion barrier. The continued effectiveness of such approaches, namely by cerium and yttrium ion implantation and with a vapor deposited amorphous silica coating, in reducing oxidation of 20Cr-25Ni-Nb stainless steel in a carbon-dioxide-based environment has been examined during 0.5 and 1 hr transients to 1300°C. The influence of pre-oxidation of the ion-implanted, silica-coated, and uncoated steel for extended periods in the same environment at 825–900°C has also been established.

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Authors and Affiliations

  1. Berkeley Nuclear Laboratories, Nuclear Electric, GL13 9PB, Berkeley, Gloucestershire, UK

    R. C. Lobb

  2. Materials Development Division, AEA Technology, Harwell Laboratory, OX11 0RA, Oxfordshire, UK

    M. J. Bennett

Authors
  1. R. C. Lobb
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  2. M. J. Bennett
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Lobb, R.C., Bennett, M.J. Oxidation protection of 20Cr-25Ni-Nb stainless steel at 1300°C. Oxid Met 35, 35–52 (1991). https://doi.org/10.1007/BF00666499

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  • DOI: https://doi.org/10.1007/BF00666499

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