Published November 2020 | Version v1
Journal article Metadata-only

Corrosion of T91 and pure iron in flowing and static Pb-Bi alloy between 450 degrees C and 540 degrees C: experiments, modelling and mechanism

Creators

  • 1. Univ Paris Saclay, CEA, Serv Corros and Comportement Mat Environm, F-91191 Gif Sur Yvette (France)
  • 2. Univ Lyon 1, Univ Lyon, CNRS, INSA Lyon,ECL,LMFA,UMR5509, F-69134 Ecully (France)
  • 3. Univ Paris Saclay, CEA, Inst Rech Lois Fondament Univers IRFU, F-91191 Gif Sur Yvette (France)

Description

T91 (Fe-9Cr steel) and pure iron were corroded in pure dissolution domain in liquid lead bismuth eutectic (LBE) from 450 to 540 degrees C in static and in dynamic LBE flow. The modelling showed that corrosion rates were controlled: (i) for static condition (LBE natural convection), by the iron diffusion in the diffusion boundary layer; (ii) for flowing LBE, by a mixed process combining both the interfacial reaction rate of iron dissolution and the iron diffusion rate in the diffusion boundary layer. By fitting the modelling on the experimental points, the constant of interfacial reaction rate was determined. (authors)

Availability note (English)

Available from doi: http://dx.doi.org/10.1016/j.corsci.2020.108897

Additional details

Identifiers

DOI
10.1016/j.corsci.2020.108897;

Publishing Information

Journal Title
Corrosion Science
Journal Volume
176
Journal Page Range
p. 1-11
ISSN
0010-938X

INIS

Country of Publication
United Kingdom
Country of Input or Organization
France
INIS RN
54063236
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BOUNDARY LAYERS; COMPUTERIZED SIMULATION; CORROSION; DIFFUSION; DISSOLUTION; FERRITIC STEELS; IRON; LEAD-BISMUTH EUTECTIC; MARTENSITIC STEELS; NATURAL CONVECTION; REACTION KINETICS
Descriptors DEC
ALLOYS; BISMUTH ALLOYS; BISMUTH BASE ALLOYS; CARBON ADDITIONS; CHEMICAL REACTIONS; CONVECTION; ELEMENTS; ENERGY TRANSFER; HEAT TRANSFER; IRON ALLOYS; IRON BASE ALLOYS; KINETICS; LAYERS; LEAD ALLOYS; MASS TRANSFER; METALS; SIMULATION; STEELS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS