Course Details
Subject {L-T-P / C} : MM5511 : Corrosion and Environmental Degradation of Materials { 3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Archana Mallik
Syllabus
Definition of corrosion, Cost of corrosion, Classification of corrosion, Electrochemical aspect of corrosion, Eight forms of corrosion (Uniform attack, Galvanic corrosion, Crevice corrosion, Pitting, Intergranular corrosion, Selective leaching, Erosion corrosion, Stress corrosion), Hydrogen damage, Basic thermodynamics of corrosion (Concept of free energy, Cell potential, EMF and Galvanic series, Relationship between free energy and cell potential, Nernst equation, Application of thermodynamics to corrosion, Pourbaix diagram), Kinetics of corrosion (Exchange current density, Activation polarization, Concentration polarization, Combined polarization, Mixed potential theory, Mixed electrodes, Passivity), Oxidation and hot corrosion of materials at high temperature, Kinetics of oxidation, Pilling-Bed worth ratio. Corrosion testing (Corrosion rate measurement by immersion testing, Expression for corrosion rate, Measurement of open circuit potential, Potentiodynamic polarization scan (Taffel’s plot), Linear polarization, Electrochemical Impedance Spectroscopy), Corrosion prevention (Selection of proper materials, Design rules and its modifications, Alloying additions, Environmental conditioning, Cathodic and anodic protection, Organic and inorganic coating, Surface engineering, Inhibitors and passivators).
Course Objectives
- The scientific principles and methods that underlie the cause, detection, measurement, and prevention of many metal corrosion problems in engineering practice
Course Outcomes
The typical outcomes of the course would be to provide the students with a broad range of information related to: <br /> - Basic thermodynamic interpretation of any form of corrosion <br /> - The guiding kinetics of any corrosion phenomena <br /> - Monitoring techniques and mitigation strategies required to assess internal and external corrosion <br /> - Develop and manage corrosion control programs <br /> - Corrosion data interpretation, analysis, and integration <br /> - Understand the criteria for determining corrective action for high-level corrosion problems within various industrial systems
Essential Reading
- D A Jones, Principles and Preventions of corrosion, Pearson
- R. W. Revie and H. H. Uhlig, Corrosion and Corrosion Control: An Introduction to Corrosion Science and Engineering, Wiley
Supplementary Reading
- Philip A. Schweitzer, Fundamentals of Corrosion: Mechanisms, Causes, and Preventative Methods, CRC Press
- Stephen D. Cramer and Bernard S. Covino, Jr., Corrosion, Fundamental, testing and protection - Handbooks 13 A and B, ASM International
Journal and Conferences
- Corrosion Science, Electrochimica Acta