👉 Nitridation is a process in which a metal or its alloy is oxidized to form a compound that is harder, more ductile, and more resistant to corrosion. This process can be carried out by using a reducing agent such as sulfuric acid, ammonia, or hydrochloric acid. The objective of nitridation is to improve the mechanical properties of the material being treated, making it less susceptible to cracking, erosion, and other forms of wear.