 Corrosion on metals is un-expected damage and in the other hand, it is un-avoided. Corrosion problems in industry always caused high cost every year, it is spent to control the corrosion and replace corroded or contaminated products. Understanding corrosion phenomena is the first step to control the corrosion it self. This course is designed to provide description and basic knowledge of corrosion, which related to various modes of corrosion, and how to control the corrosion. Through this course, attendants will be able to define the types, major causes and the failures caused by corrosion. In further benefits, attendants will have the ability to decide the best method to control the corrosion and also be able to predict the remaining life time of a product or an equipment by using the combination of software application, economic evaluation, and case studies. OBJECTIVES This course will provide knowledge refreshment about corrosion, and upgrade the understanding of these following subjects: - Basics of metallic corrosion
- Classification of corrosion
- Major cause of corrosion and failures occurred
- Corrosion rate and influence parameters
- Corrosion control methods and application
SYLLABUS
1. Introduction
a.Cost of Corrosion
b.The influence of people
2. Corrosion Modes :
a.Uniform corrosion
i. Atjospheric corrosion
ii. Galvanic corrosion
iii. Stray current corrosion
iv. General biological corrosion
v. Molten Salts corrosion
vi. Liquid Metal corrosion
vii. High temperature corrosion
b.Localized Corrosion
i. Filiform corrosion
ii. Crevice corrosion
iii. Pitting corrosion
iv. Localized biological corrosion
c.Metallurgically Influenced Corrosion
i. Intergranular corrosion
ii. Dealloying corrosion
d.Mechanically Assisted Corrosion
i. Erosion-corrosion
ii. Fretting Corrosion
iii. Cavitation corrosion
iv. Corrosion fatigue
e.Environmentally Induced Cracking
i. Stress corrosion cracking
ii. Hydrogen damage
iii. Liquid metal embrittlement
iv. Solid metal induced embrittlement
3. The Electrochemical aspect of corrosion :
a.Electrochemistry cell
b.Corrosion tendency and electrode potentials
c.Pourbaix diagram
d.Polarization and corrosion rate
e.Passivity theory
4. Corrosion Protection Methods
a.Protective coating
i. Painting
ii. Electrochemical coating
iii. Spray coating
b.Corrosion inhibitors
i. Classification
ii. Inhibition mechanism coating
iii. Selection of inhibitor system
c. Cathodic Protection
i. Sacrificial anode
ii. Impressed current
d. Anodic Protection
5. Laboratory Visit
a. Inhibitor Selection Laboratory
b. Metallurgical Engineering Laboratory
6. Cases Studies
a. CO2 corrosion in pipeline
b. Stress corrosion cracking of impeller materials
c. Microbiological corrosion
d. High temperature corrosion
e. Intergranular corrosion
f. Crevice corrosion of heat exchanger tubes |
