How do you stop rusting if an iron object is already underwater?

In summary, the conversation discusses ways to prevent rusting and corrosion of iron. The three main methods mentioned are galvanization, alloying, and applying a layer of paint. However, the concern is whether these methods would still work if the object is already submerged in water, specifically at a depth of 1000m. Additional methods such as sacrificial anodes and active cathodic protection are also mentioned as possible solutions. It is suggested to explore coatings designed for underwater application, such as epoxies and other materials.
  • #1
Mr-Keroro
1
0
I have a bit of basic knowledge on rusting and corrosion of iron but I am trying to find ways to stop rusting. The problem is what if an object was already submerged in water? Is it still possible to stop it from rusting? I know there are 3 ways of preventing corrosion but I am not sure if there are more. There is Galvanisation, Alloying and simply applying a layer of paint over an iron or steel object but will any of these methods work if the object is already underwater(around 1000m below sea level)? If not then, are there any more methods which could possibly slow down if not stop rusting?
 
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  • #2
I assume that in your list of preventive measures, you're including sacrificial anodes, like one made of Zinc for example.
 
  • #3
Mr-Keroro said:
If not then, are there any more methods which could possibly slow down if not stop rusting?

How about active cathodic protection? In seawater you might need an additional protection against microorganisms.
 
  • #4
You could wrap it tightly with something like latex or rubber. Some epoxys might cure underwater... perhaps with a UV light.
 
  • #5
Go explore the many coatings designed to be applied under water. I only have experience with the epoxies, but there are others.
 

1. What causes rusting in iron objects underwater?

Rusting is a chemical process that occurs when iron is exposed to oxygen and water. This combination creates iron oxide, also known as rust.

2. Can rusting be prevented in iron objects that are already underwater?

Yes, rusting can be prevented in iron objects that are already underwater by using a process called galvanization. This involves coating the iron object with a layer of zinc, which acts as a barrier between the iron and water, preventing the formation of rust.

3. How can I remove rust from an iron object that is already underwater?

Removing rust from an iron object that is already underwater is a difficult task. The best solution is to bring the object to the surface and use a rust removal product specifically designed for underwater use. Alternatively, you can also try using a wire brush or sandpaper to scrub off the rust, but this may damage the object.

4. Are there any natural methods to prevent rusting in iron objects underwater?

There are some natural methods that can help prevent rusting in iron objects underwater. For example, you can apply a layer of beeswax or vegetable oil to the object, as these substances create a protective barrier against water and oxygen. However, these methods may not be as effective as galvanization.

5. What are the long-term effects of rusting on iron objects underwater?

Rusting can significantly weaken and damage iron objects over time, making them more prone to breaking or disintegrating. In addition, rust can also cause discoloration and decrease the aesthetic value of the object. It is important to prevent and address rusting in underwater iron objects to maintain their structural integrity and appearance.

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