ECHE 571 Corrosion Engineering
Fall 2009, Tuesday /Thursday 2 AM– 3:15 PM, SWGN 2A24
Professor :Office:
Telephone:
E: mail:
Web Site:
Office Hours:
Grader:
Office/lab
E:mail
Textbooks:
Objectives:
Corrosion Techniques: / Dr. Branko N. Popov
2C19
777-7314
Monday 11-12 am; Fri: 11-12 am and by appointment
Peng Zhang-
2B33
- Denny A. Jones, “Principles and Prevention of Corrosion,” Macmillan Pub. Co., New York, (1995).
- Mars G. Fontana, Corrosion Engineering , McGraw-Hill, Inc, (1986)
- A. J. Bard and L. R. Faulkner, “Electrochemical Methods – Fundamentals and Applications,” John Wiley & Sons, (1980).
- B. N. Popov “Electrochemical and Corrosion Experimental Techniques,” Notes USC, (2000).
The following advanced corrosion techniques will be demonstrated to the students (1) inear polarization techniques, (2) potentiodynamic technique, (3) cyclic polarization, (4) Tafel technique, (5) electrochemical impedance spectroscopy). The undergraduate students will be tutored by graduate students who are experts in the above techniques. The undergraduate students are required to submit only two reports which will cover two of the above corrosion techniques.
Computer Usage:
Special Projects:
Grading: / Extensive use of spreadsheets, MathCad or Maple and graphing packages
The special projects are designed for graduate students. The undergraduate students will be subjected to a special program which will cover the basics of corrosion processes , corrosion testing and material selection and design. Nine problem sets are planned for the course. Each undergraduate student taking the course will be tutored through help sessions how to solve the problems.
The following is a list of examples for special projects designed for graduate student:
- statistical analysis of corrosion data,
- application of thermodynamics to corrosion.
- polarization methods to measure corrosion rate
- application of electrode kinetics to corrosion (exchange current density, activation polarization, concentration polarization, concentration polarization, combination polarization, mixed potential theory.)
- passivity, mechanism of the growth and breakdown of passive films.
- corrosion protection design for reinforcing steel in concrete,
- predicting of corrosion behavior : effect of oxidizers, velocity effects, galvanic coupling, alloy evaluation
- pitting and crevice corrosion
- effects of metallurgical structure on corrosion
- coatings and inhibitors
- design of cathodic protection system for buried structures,
- design of sacrificial anode protection system for structures,
- modeling of inhibition mechanism of organic inhibitors,
- modeling of degree of delamination of organic coatings on steel - simulation of circuit analog models, (7)
- modeling of hydrogen diffusivity in metals,
- modeling of electrodeposition of alloys and composites,
- mechanism of passivation processes,
- materials selection and design.
Homework's/Quizzes 20% 10%
Two midterms 40% 30% Sep. 29th , Oct. 29th
Final Project 10% 40%
Final Exam 30% 20% Wed. Dec. 9 at 2:00 PM
Graduates
Graduate projects* ReportsDue: First Draft November 1st Final Draft Dec 4th
ECHE 571 Approximate Schedule, Fall 2009
Final Exam: Wed Dec 9 th @ 2:00 AM
Holidays: September 7th, Labor Day;Fall Break: October 8-9, Wed-Fri;
Thanksgiving Recess, November 25-29, Wed-Sun
Date8/20
8/25
8/27
9/1
9/3
9/8
9/10
9/15
9/17
9/22
10/24
9/29
10/1
10/6
10/8
10/13
10/15
10/22
10/27
10/29
11/3
11/5 / Topic and Reading
Thermodynamics of Electrochemical Reversible Systems; Irreversible Electrochemical Systems; Thermodynamic Expression for Equilibrium Potentials; Classification of Electrodes; Standard Electrode Potentials: Hydrogen and Oxygen Gas Electrodes
Use of standard Potentials, Reaction Direction by Free Energy, Concentration Effects Jones Ch.2,Fontana and BNP Handouts
Potential-pH (POURBAUX DIAGRAMS); construction for Al, Fe, Cu, Ni, Co and other metals Read: Jones Ch.2, BNP Handouts
Potentiometry (Experimental Measurements) Reference Electrodes, Reversible Cell Potential, Corrosion Potential.
Review of Electrochemical Thermodynamics and Electrode Potentials
Kinetics of Electrode Processes; Basic Concepts; The EMF of Polarization, Electrode Polarization; Classification of Polarization Phenomena; Fradays Law; Concentration Polarization, Equilibrium Conditions; The Exchange Current Density;
The Current - Overpotential Equation; Butler Volmer Equation, Tafel Behavior- Tafel Plots :Read: Jones Ch 3 and BNP Handouts.
EVANS Diagrams: Read: BNP Handouts
Charge Transfer Resistance; Kinetics of Hydrogen Evolution Reactions: Read: Handouts BNP
Electrochemical Corrosion of Metals; Mixed Electrodes; The Kinetic Theory of Corrosion: Read: Jones Ch 5, BF EM Ch. 3; Handouts BNP
Exchange Current Density, Concentration Polarization, Combined Polarization
Mixed Potential Theory; Review of Electrochemical Kinetics of Corrosion
Polarization Methods to Measure Corrosion Rates-Stern-Geary Equation; CORROSION TECHNIQUES: Tafel Extrapolation, Linear Polarization;
Potentiodynamic Method: Cyclic Polarization Technique Read: Jones Ch 5, BF Ch. 3; Handouts BNP
Passivity: Passive Films, Active Passive Corrosion Behavior: Active -Passive Alloys
Passivity: Examples Alloy evaluation, Criterion for Passivation
Mechanisms of the Growth and Breakdown of Passive FilmsPredicting Corrosion Behavior, Effect of Oxidizers, Velocity Effects, Alloy Evaluation
Galvanic Corrosion: Corroding Metal-Inert Metal Couple, Effect of Exchange Current Density, Effect of Surface Area,Pitting and Crevice Corrosion
Hydrogen Permeation; Evaluation of Diffusivity: Basic Model of Hydrogen Permeation.
Corrosion Prevention: Organic Coating / Comment
Exam 1
Spring Brake
Exam 2
ECHE 571 Approximate Schedule, FALL 2009
Date11/10
1112
11/17
11/19
11/24
12/1
12/3
12/9 / Degradation and Failure Mechanism
Methods for Coating Evaluation- Electrochemical Impedance (EIS)
Cathodic Protection
Cathodic protection: Principles and Application
Impressed Current Cathodic Protection
Sacrificial Anode Protection
Review / FINAL EXAM
1