- At great depths, the following conditions have the following effects on the rate of corrosion:
|Factor:||State:||Effect on Rate of Corrosion:|
|Temperature||Very low||Decrease, due to lower kinetic energies of interacting particles|
|Oxygen levels||Very low||Decrease, as oxygen is essential for the formation of metal oxides|
|Salinity levels||Higher than the surface||Slight increase, but little difference|
- However, corrosion at great depths occurs to a much greater extent than would be expected from the above information.
- Much of the corrosion at great depths is caused by certain anaerobic bacteria that reduce sulfate to sulfide.