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Online Course

Aqueous Corrosion and Its Control

Indian Institute of Technology Bombay and NPTEL via Swayam

Overview

Corrosion failures of components cuts across all the industries and cost a national about 3.5% of its GDP. In addition, it affects environments, scant resources, safety and reliability of components. Effective control of corrosion requires basic understanding of electrochemical principles, metallurgical aspects and a clear perspective of the industrial problem. This course comprehensively addresses these aspects.
INTENDED AUDIENCE :
Metallurgical Engineering and Materials Science, but is open to other engineering branches
PREREQUISITES :None
INDUSTRIES SUPPORT :Oil and Gas Industries, Manufacturing

Syllabus

COURSE LAYOUT

Week 1:Introduction to the course and Importance of corrosionWeek 2:Can we predict of corrosion of a metal? Electrochemical Equilibrium and Thermodynamics of corrosion.Pourbaix diagrams and identification of stability regionsWeek 3:Concepts of Electrochemical Kinetics, exchange current density charge transfer and diffusion controlledWeek 4:What determines the corrosion rates? Mixed Potential theory Passivity and Application of mixed potential theory for prediction of corrosion. Application of electrochemical kinetics for corrosion rate determination and mechanisms ofcorrosion
Week 5:Uniform corrosion and the factors affecting them and the control measures, concept of localized corrosionWeek 6:Galvanic Corrosion: Mechanism, factors affecting galvanic corrosion, prevention methods, typical industrial problems and methods of evaluationWeek 7:Crevice Corrosion: Mechanism, factors affecting crevice corrosion, prevention methods, typical industrial problems and methods of evaluationWeek 8:Pitting Corrosion: Mechanism, factors affecting pitting corrosion, prevention methods, typical industrial problems and methods of evaluation
Week 9:Intergranular Corrosion: Mechanism, factors affecting intergranular corrosion, weld decay, knife line attack. Role of welding techniques, parameters and other material conditions on weld decay.Week 10:Industrial problems of weld decay, intergranular corrosion of other alloys, test methods and selection rationale.Week 11:Dealloying: Mechanism, factors affecting alloying prevention methods, typical industrial problems.Flow assisted Corrosion, Erosion Corrosion, Cavitation damage: Mechanism, factors affecting these corrosion, prevention methods, typical industrial problemsWeek 12:Environmentally assisted cracking: Stress corrosion cracking and Hydrogen Damage Mechanism, factors affecting cracking of metals, prevention methods, typical industrial problems and methods of evaluationWeek 13:Continuation of the above, Microbial Corrosion, Corrosion Control Philosophy and Management

Taught by

Prof. V. S. Raja

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