Subject Group of Materials Science and Engineering
3605 Corrosion Engineering Summer
Description and rationale: The aim of this course is to provide basic knowledge of corrosion and corrosion protection of metals and alloys from electrochemistry. Thermodynamics and electrochemistry are the basis of the course and important concepts such as local cell model for corrosion, charge transfer process, and heterogeneous reaction mechanics are reviewed. On the basis of the knowledge of corrosion phenomena, the methods are introduced how one can protect metals and alloys against corrosion.
Keywords: Corrosion, Corrosion protection, Electrochemistry, Charge transfer process, Impedance, Passivation and passive film, Local cell model
Pre-requisite: thermodynamics, heterogeneous reaction mechanism, and electrochemistry
Expected students: master and doctoral
Instructors: Prof. Toshiaki OHTSUKA ()
Course Outline:
1. Corrosion and Environment
1-1. What is corrosion?
1-2. Environment in the earth
1-3. Why does corrosion takes place?
1-4. Corrosion in Water or Humidified Atmosphere – Electrochemical Cell Model
2. Electrochemistry of Corrosion
2-1. Electrochemical reactions and Electrode Potential
2-2. Stability of Metals- Corrosion from the chemical Equiliblium
3. Corrosion Potential and Corrosion Current – Kinetics of Corrosion
3-1. Mixed Potential
3-2. Current- Potential Relation of Corroded Metals
3-3. Current Change due to Bias Applied
3-4. The Tafel Relation and Linear Polarization Approximation
3-5. Measurement of Corrosion Potential and Polarization Curve
3-6 Polarization Curve and Passivation of Iron Electrode
3-7. Measurement of Corrosion Rate
3-8. What can we read from the polarization curve?
4. Corrosion Protection
4-1 Cathodic Protection
4-2. Anodic Protection
4-3. Low-allooy Steels
4-4. Corrosion Inhibitor
5. Classification and Morphology of Corrosion
5-1. General Corrosion
5-2. Localized Corrosion
5-3. Corrosion Cracking
Grading: based on the results of three reports submitted for the individual assignments in the mid-term and the end of term.
Textbooks and references: Some handouts will be prepared for you. Please contact the instructor if you need further advice. The following books are recommended for references; J. C. Scully, “The fundamentals of Corrosion 3rd Edition”, Pergamon Press (1990); ISBN 0-08-037874-9, R. W. Revie (Editor), Uhlig’s Corrosion Handbook 2nd Edition”, John Wiley & Sons, Inc. (2000); ISBN 0-471-15777-5 and P. R. Roberge (Editor), Corrosion Basics – An Introduction, 2nd Edition, NACE (2006); ISBN 1-57590-198-6.
1/2010