Pub Date : 2020-01-16DOI: 10.1201/9780367812416-10
T. N. Narayanan
Phosphating is defined as the treatment of a metal surface to give it a reasonably hard, electrically non-conducting surface coating of insoluble phosphate which is contiguous and highly adherent to the underlying metal and is considerably more absorptive than the metal [1]. The coating is formed as a result of a topochemical reaction, which causes the surface of the base metal to integrate itself as a part of the corrosion resistant film.
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