Corrosion can be prevented or mitigated through various methods, including material selection, surface treatment, coatings, cathodic protection, and environmental control. Material selection involves choosing metals or alloys that are resistant to corrosion in a given environment. Surface treatment, such as passivation or electropolishing, can create a protective layer on the metal surface. Coatings, such as paint or varnish, can provide a physical barrier against corrosion. Cathodic protection involves applying an electric current to drive the corrosion reaction in the opposite direction, protecting the metal. Environmental control involves controlling factors such as temperature, humidity, and chemical composition to reduce the corrosivity of the environment.