Corrosion affects every industry in which metal is involved, from manufacturing machinery to transport pipelines, and it is estimated to cost the global economy trillions of dollars per year. Many of the traditional methods for inhibiting corrosion are highly toxic (such as hexavalent chromium) or do not degrade readily in the environment (such as Benzotriazole) meaning they pose a risk to human and environmental health. Much recent work in the area has gone into searching for greener alternatives that will be both safe and effective. Beginning with a look at the fundamentals of corrosion...