The corrosion of aluminium in concentrated hydrogen peroxide



A distinction is made between the electrochemical corrosion of metallic aluminium, in which aluminium oxide is formed, and the chemical solution of the aluminium oxide, leading eventually to the interaction of aluminium ions with the stannic acid stabiliser. The electrochemical reaction is facilitated by chloride ions and retarded by nitrate ions, whilst the chemical solution is enhanced by hydrogen ions and the presence of stannic acid sol. Only the chemical reaction affects the stability of the stannic acid stabiliser.