1983-02-01

AeroNikl ® Brush Plated Coatings 830687

ABSTRACT

Selective "Brush Plating" is a process gaining wider acceptance in the airline/aerospace industries. Applications are no longer limited to mere "touch ups" of cadmium, but are being expanded to include heavy build-ups with other metals on larger areas. As the process applications were expanded, it became evident that the most widely used brush plated coatings, the high speed neutral or alkaline Nickels, would not be acceptable for most applications.

Deposits from such solutions were highly stressed, constantly showed evidence of surface to base cracking, and poor adhesion in bend/fracture tests. With the development of the sulfamate based AeroNikl® plating solutions, these traditional plating problems have been eliminated. Successful plating, however, requires "state-of-the-art" brush plating techniques, including an auxiliary piece of equipment, known in the trade as the AeroNikl® Sump.

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