Corrosion-resistant coatings are applied to metals for preventing corrosion. These coverings are made with substances such as zinc or cotton and also depend on the metal. Generally, structures like pipelines, concrete bars, etc. are covered with such layering. Chromium and cobalt alloys are proven best when it comes to corrosion-free coatings. Such coatings are also helpful when it comes to prevention of oxidation, moisture action and avoiding chemical reactions with the metal.