Effect of Al and Ce oxide layers electrodeposited on OC4004 stainless steel on its corrosion characteristics in acid media
- 1. Institute of Physical Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 11, 1113 Sofia (Bulgaria)
- 2. Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia (Bulgaria)
Description
The changes in the corrosion characteristics of stainless steel OC4004 in 0.1 M HNO3 after electrodeposition of thin Al and Ce oxide films on it has been investigated. The Ce2O3-CeO2 layers have been found to possess a pronounced stabilizing effect on the steel passive state and on its corrosion resistance, respectively, whereas the Al2O3 layers do not improve considerably the corrosion behaviour of the SS/Al2O3 system. A twice-lower corrosion current was observed with a ternary SS/Al2O3/Ce2O3-CeO2 system in the passive region, while the zones of potentials, where the steel is in a stable passive state, are not changed. The obtained results permit the assumption that the cerium oxides layer acts as an effective cathode playing a determining role with respect to the improvement of the corrosion behavior of the steel. It has been concluded that when the SS/Al2O3/Ce2O3-CeO2 system is used in media containing nitric acid, the corrosion will proceed at potentials where the passive state of steel would not be disturbed
Additional details
Identifiers
- DOI
- 10.1016/j.corsci.2006.04.008;
- PII
- S0010-938X(06)00145-4;
Publishing Information
- Journal Title
- Corrosion Science
- Journal Volume
- 48
- Journal Issue
- 12
- Journal Page Range
- p. 4037-4052
- ISSN
- 0010-938X
- CODEN
- CRRSAA
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38028845
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM OXIDES; CERIUM OXIDES; CORROSION; CORROSION RESISTANCE; ELECTRODEPOSITION; FILMS; LAYERS; PASSIVITY; STAINLESS STEELS
- Descriptors DEC
- ALLOYS; ALUMINIUM COMPOUNDS; CARBON ADDITIONS; CERIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; DEPOSITION; ELECTROLYSIS; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; LYSIS; OXIDES; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; STEELS; SURFACE COATING; TRANSITION ELEMENT ALLOYS
Optional Information
- Copyright
- Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.