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ctrodeposited CMMA Zn-Alloy Coatings for Cd Replacement

Zinc Based Compositionally Salient Technical Features

Modulated Multilayered The coating provides cathodic
protection to steel both in normal
Alloy (CMMA) coatings were water and saline water. Have high
red rust resistance for ≥ 1000h in salt
electrodeposited on high strength spray chamber, humidity resistance for
more than 500h. The coating resists
steel aqueous bath using bi-polar hydrogen embrittlement and ideal for
Cd replacement.
pulsed DC power. The deposition
Level/Scale of Development : TRL-3
process was optimized and the
Commercialization : Lab scale
developed coatings exhibited similar

behaviour as that of electroplated

Cd.

Intellectural Property Rights (IPR): The
IPR is with the Sponsor

Application Major Raw Materials Utilized
Commercial Chemicals
Cathodic protection to high strength
steel that are prone to hydrogen Major Plant, Equipment and
embrittlement so as to replace toxic Cd Machinery Required
platings. Target industries are aviation Bipolar current source.
and automotive sector.

AS 57