Alloys high-temperature film breakdown

Alloys, used at high temperatures, obtain their protection from a dense and adherent oxide layer formed on the metal surface. The corrosive attack of metals and alloys in molten salts is due to the solubility of oxide scales by basic and acidic dissolution. This breakdown of the passive film gives rise to accelerated metal consumption by enhanced oxidation (Hot Corrosion). The phenomenon is closely related to pitting corrosion of metals and alloys in aqueous solutions. 

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