CORROSION PROTECTIVE TECHNIQUES
Iron is a chemical element with symbol Fe and atomic number 26. It is the most widely used of all the metals due to its low cost and high strength.
When Iron is exposed to moisture along with Oxygen it become corroded. The reaction is also called rusting.
For the refined metal, it is a process of gradual degradation. Rust ruins the functionality and stability of important machinery made of iron.
The use of alloys, like stainless steel, is one of the most common ways to prevent rust, or to slow it down.
Stainless steel isn't suitable or economical for all applications, but it will work for many.
A coating of oil will help to prevent rust or slow it down, since it inhibits moisture from reaching the Iron in the metal. However, an oily surface might be problematic for some tools or machines and poses environmental and human concerns.
Copper is a chemical element with the symbol Cu and atomic number 29. It is a soft malleable and ductile metal with very high thermal and electrical conductivity.
Copper and its alloys are extremely resistant to corrosion, but a superficial discoloring tarnish, eventually forms with exposure to the atmosphere or handling. Copper can be corroded in an acidic and alkaline environment.
Two ways of controlling copper corrosion are;
(a) Inorganic corrosion inhibitor (Toxic)
(b) Organic corrosion inhibitor (Green)
Green corrosion inhibitor can be used because they are both economical and environment safe.
Ref 1; http;//opentextbc.ca 17.6-corrosion.
Ref 2; Arabian journey of chemistry volume 13, Issue 1, January 2020, page 481-544
Comments
Leave a comment