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Electrochemistry & Corrosion Engineering ChE-311

Dr. Sufiyan Engr. Faheem Hassan. Electrochemistry & Corrosion Engineering ChE-311 . Class Timetable. Class Schedule. Assessment Method. Assignments/Attendance: 20% Quiz: 10% Quiz : 10% Mid Term: 20% End Term: 40%. Saturday 13:00 – 13:50 Monday 13:00 – 13:50

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Electrochemistry & Corrosion Engineering ChE-311

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  1. Dr. Sufiyan Engr. Faheem Hassan Electrochemistry & Corrosion EngineeringChE-311

  2. Class Timetable Class Schedule Assessment Method Assignments/Attendance: 20% Quiz: 10% Quiz : 10% Mid Term: 20% End Term: 40% Saturday 13:00 – 13:50 Monday 13:00 – 13:50 Wednesday 13:00 – 13:50

  3. Course Contents • Introduction • Basics in corrosion • Basics in chemistry • Basics in Metallurgy • Corrosion reactions • Corrosion cells • Corrosion rates • Electromotive series and Galvanic series • Factors affecting corrosion • Forms of corrosion • Thermodynamics and kinetics of corrosion • Corrosion control measures

  4. Textbook

  5. Definition • Corrosion may be defined as the destruction of a metal or an alloy because of chemical or electrochemical reaction with its surrounding environment or medium

  6. Environments in Corrosion

  7. Corrosion: Metallurgy in Reverse

  8. Some Corrosion Failure Examples

  9. Aloha Incident

  10. Aloha Incident (Contd..)

  11. Bhopal Accident

  12. Carlsbad Pipeline Explosion

  13. Flow Accelerated Corrosion

  14. Nuclear Reactor with a Hole in the Head

  15. Losses due to Corrosion

  16. Cost of Corrosion • Which cost more? • Corrosion • Fire • Flooding • Earthquake

  17. Cost of Corrosion(2004) in billion US$

  18. Example of Overdesign • An 8" in. dia oil pipeline 225 miles long with a in. wall thickness was installed with no corrosion protection system • With appropriate protection namely cathodic protection, it would have a thin wall thickness which would • save 3,700 tons of steel (worth more than one million dollar) • increase internal capacity of the pipeline by about 5%.

  19. So……Why Study Corrosion? • Materials are precious resources • Engineering design is incomplete without knowledge of corrosion • Applying knowledge of corrosion protection can minimize disasters • Corrosion – contaminate products such as pharmaceutical, food and dairy products or luxury items like soap • Corrosion products – threat to the environment • Artificial implants for the human body!!!

  20. Distribution of disciplines in which active corrosion engineers have graduated

  21. So .. What would be expected from You (a Corrosion Engineer)? • Ensuring maximum life of new equipment • Preservation of existing equipment • Protecting or improving the quality of a product in order to maintain or improve a competitive position. • Avoiding costly interruptions of production. • Reducing or eliminating losses of valuable products by spillage or leaks. • Refitting of equipment withdrawn from service because of corrosion. • Reducing hazards to life and property that might be associated with corrosion: • Explosions of pressure vessels or piping systems • release of poisonous or explosive gases or vapors are a few examples.

  22. Thanks

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