Question

What is rusting? List the main causes of rusting.

Answer 1

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What is rusting? List the main causes of rusting.

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Rusting is caused by the oxidization of the iron in the steel creating iron oxide. This is generally caused when moisture and oxygen are present.

There are several ways to prevent oxidization:

1. Pickling - place the steel or iron in oil and keep it well coated. This method is often used for firearms and works by keeping the moisture out of the steel.
2. Coating- using a paint product to coat the steel keeps both moisture and oxygen from attacking the steel. complete coverage is important to keep the steel from rusting
3. Galvanizing or zinc coatings - These methods utilize cathodic protection or a “sacrificial metal” to protect the steel. The zinc is attacked before the oxygen begins to work on the steel the prolonging and preserving the steel during the oxidization process.
4. Materials selection - Use of high grade stainless steel is another alternative. While expensive stainless does not generally rust as easy as steel or Iron and thus is widely used for marine applications where conditions for rusting are ideal.

Answer 2

Answer:

Rusting is the oxidation of iron in presence of oxygen and moisture.

The cause of rusting is -

• exposure to moisture

Explanation: