3. • Introduction
Definition of Corrosion:
Destruction of materials due to interaction with
environment:
Not necessarily to produce oxides.
Corrosion and oxidation.
Hot corrosion.
Basics of Corrosion
5. Corrosion Environments:
Air and Moisture.
Water: Fresh, Distilled, Brackish, Sea…….etc.
Industrial Environments: Steam, NH3, SO2, H2S, flue gases……etc.
Chemicals: Organic and Inorganic.
Nuclear, High temp. and pressure conditions.
Corrosion rate Expressions:
* Weight loss or weight gain
mg/ dm2/day……mdd
mg/cm2/day
* Penetration
mils per year(mpy)
mms per year(mmpy)
mms per year(mmpy)
6. Industries That Suffer Corrosion Problems:
Marine and Desalination.
Oil Industry.
Chemical and Petrochemical.
Metal Refining
Transport.
General Engineering.
Food.
Building and Construction.
Basics of Corrosion