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Oxidation/Dissolution of Ferritic ODS Steels in Static Lead With Various Oxygen Contents at 650°C

[+] Author Affiliations
Valentyn Tsisar

Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, GermanyNational Academy of Sciences of Ukraine, Lviv, Ukraine

Olga Yeliseyeva

National Academy of Sciences of Ukraine, Lviv, Ukraine

Jürgen Konys

Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany

Paper No. ICONE21-15521, pp. V001T02A018; 8 pages
doi:10.1115/ICONE21-15521
From:
  • 2013 21st International Conference on Nuclear Engineering
  • Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Radiation Protection and Nuclear Technology Applications
  • Chengdu, China, July 29–August 2, 2013
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5578-2
  • Copyright © 2013 by ASME

abstract

The compatibility of ferritic oxide dispersion strengthened (ODS) steels with static liquid Pb at 650°C was investigated for up to 1750 h. The dependence of corrosion behavior on oxygen concentration in the melt and steel structure was determined. The interaction mode changed from intensive oxidation in the oxygen-saturated melt, accompanied by the formation of a bi-layer magnetite/spinel scale, to formation of a thin Cr-based oxide film in oxygen-doped melt and to the severe steel dissolution in oxygen-free lead. The viability of the in-situ formed Cr-based oxide film, as a promising way to improve the corrosion resistance of steels in the high-temperature (T > 550°C) lead melts is discussed.

Copyright © 2013 by ASME
Topics: Steel , oxidation , Oxygen

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