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Unit 5 - Chemistry

Chemistry primarily deals with the composition of substances and their reactions. Corrosion in aqueous systems is an electrochemical process. However, corrosion in non-aqueous systems can be a chemical process - for example, in the case of high temperature oxidation in gaseous environments. Even in aqueous systems, there can be a chemical (not electrochemical) component. For example, in some cases the passive film can experience chemical dissolution and thinning.
Chemistry
Chemistry

The chemistry of the Local Environment is critical in corrosion.
It is important to recognize that there can be a significant difference
between the Bulk Environment and the Local Environment.

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