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Investigation of the role of electrokinetic effects in corrosion deposit formation
Affiliation:1. Materials Performance Centre, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom;2. Rolls-Royce plc, 65 Buckingham Gate, London SW1E 6AT, United Kingdom;1. Department of Nuclear Engineering & Radiological Sciences, University of Michigan, 2355 Bonisteel Boulv, Ann Arbor, MI, USA;2. Theoretical Division (T-1, MS B221), Los Alamos National Laboratory, Los Alamos, NM 87545, USA;3. Westinghouse Electric Company Nuclear Fuel Division, 1000 Westinghouse Drive, Cranberry Township, PA 16066, USA;1. CEA, DEN, DTCD, SECM, Laboratoire d''étude du Comportement à Long Terme des matériaux de conditionnement, F-30207 Bagnols-sur-Cèze, France;2. CEA, DEN, DPC, SCCME, Laboratoire d''Étude de la Corrosion Aqueuse, F-91191 Gif-sur-Yvette, France;3. LPMG-UMR, CNRS 5148, Centre SPIN, Ecole Nationale Supérieure des Mines, 158 Cours Fauriel, F-42023 Saint-Etienne, France;1. Beijing Advanced Innovation Center for Materials Genome Engineering, National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China;2. CNNC Nuclear Power Operations Management Co., Ltd, Jiaxing 314300, China;1. Materials Performance Centre, Department of Materials, Universtiy of Manchester, Oxford Road, M13 9PL Manchester, United Kingdom;2. Rolls Royce plc, Kings Place, 90 York Way, N1 9FX London, United Kingdom;1. Dept. of Nuclear Science and Engineering, Massachusetts Institute of Technology (MIT), 77 Massachusetts Ave., Cambridge, MA, 02139, USA;2. Dept. of Mechanical Engineering, University of Arkansas, Fayetteville, AR, 72701, USA;3. Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University (NCEPU), Beijing, 102206, China;4. Electric Power Research Institute (EPRI), 3420 Hillview Ave, Palo Alto, CA, 94304, USA;5. Westinghouse Electric Company, 1332 Beulah Road, Pittsburgh, PA, 15235, USA;1. Department of Physical Chemistry, University of Chemical Technology and Metallurgy, Kl. Ohridski Blvd. 8, 1756, Sofia, Bulgaria;2. VTT Technical Research Centre of Finland Ltd, P.O.Box 1000, Kemistintie 3, FIN-02044 VTT, Espoo, Finland
Abstract:Electrokinetic effects associated with corrosion deposit formation in simulated high temperature primary water have been investigated. A miniature flow cell was designed for the purpose of creating regions of accelerated flow to produce areas of net anodic and cathodic activity which may be characterised by determination of electrode polarisations. Post-test XRD and GDOES examination of so polarised electrodes showed that the rate of oxide deposition and the oxide structure was strongly dependent on the electrochemical corrosion potential. This work underlines the importance of anodic processes generated by streaming potentials which can lead to enhanced oxide deposition.
Keywords:A. Stainless steel  B. Cyclic voltammetry  B. XRD  C. Electrodeposited films  C. Oxidation
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