👉 A nickelized object is an item that has been treated with a chemical substance that makes it more resistant to corrosion or rust, such as nickel. Nickel is a soft metal and can be used in a variety of applications due to its ability to conduct electricity and resist corrosion. When a nickel-iron alloy is melted together, the iron becomes less reactive and reacts with the nickel to form a protective layer on the surface of the alloy. This process is called nickelizing or nickelation.