[cs_content][cs_section parallax=”false” separator_top_type=”none” separator_top_height=”50px” separator_top_angle_point=”50″ separator_bottom_type=”none” separator_bottom_height=”50px” separator_bottom_angle_point=”50″ style=”margin: 0px;padding: 45px 0px;”][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/1″ style=”padding: 0px;”][cs_text]Shipwrecks and Salvage > 5. Rates of Corrosion >
Predict the effect of low temperatures at great depths on the rate of corrosion of a metal[/cs_text][/cs_column][/cs_row][/cs_section][cs_section parallax=”false” separator_top_type=”none” separator_top_height=”50px” separator_top_angle_point=”50″ separator_bottom_type=”none” separator_bottom_height=”50px” separator_bottom_angle_point=”50″ style=”margin: 0px;padding: 45px 0px;”][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/1″ style=”padding: 0px;”][cs_text]
- 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.
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