Oxidation mechanism of a Fe–9Cr–1Mo steel by liquid Pb–Bi eutectic alloy (Part I)

This paper is the first part of a global study on the oxidation process of a Fe–9Cr–1Mo martensitic steel (T91) in static liquid Pb–Bi. It focuses on the oxygen transport mode across the oxide scale. The oxide layer has a duplex structure composed of an internal Fe–Cr spinel layer and an external ma...

Full description

Saved in:
Bibliographic Details
Published in:Corrosion science 2008-09, Vol.50 (9), p.2523-2536
Main Authors: Martinelli, L., Balbaud-Célérier, F., Terlain, A., Delpech, S., Santarini, G., Favergeon, J., Moulin, G., Tabarant, M., Picard, G.
Format: Article
Language:English
Subjects:
A. Fe–9Cr
A. Oxygen
A. Pb–Bi
Applied sciences
B. Oxygen tracer experiment
C. Diffusion
Chemical Sciences
Corrosion
Corrosion environments
Exact sciences and technology
Material chemistry
Metals. Metallurgy
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper is the first part of a global study on the oxidation process of a Fe–9Cr–1Mo martensitic steel (T91) in static liquid Pb–Bi. It focuses on the oxygen transport mode across the oxide scale. The oxide layer has a duplex structure composed of an internal Fe–Cr spinel layer and an external magnetite layer. Oxygen 18 tracer experiments are performed: they show that the magnetite layer grows at the Pb–Bi/ oxide interface whereas the Fe–Cr spinel layer grows at the metal/oxide interface. Oxygen seems to diffuse across the oxide scale dissolved inside nanometric lead penetrations called nano-channels. Specific experiments are performed to characterize the nano-channels.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2008.06.050