Definitions for "Rusting"
The corrosion of iron to produce Fe2O3. H2O.
The appearance of metal oxidation (corrosion) on the surface of damaged paint.
The appearance of rust (corrosion) on the surface of the damaged paint. Scratch rusting occurs where the film has been damaged and rusting appears on the scratched area.
Developing a coat of rust on the surface, or containing a rust coating from a previous rusting.