Coatings and methods of application

Details Coatings and methods of application Coatings and methods of application

1977-01-31

1978-09-19

Mack, John H.

Chemistry: electrical and wave energy

Apparatus

Coating, forming or etching by sputtering

204 38E, 427409, 427388C, F16B 3306, C25D 548

Patent

active

041145054

ABSTRACT:
A method of providing a protective coating for a metallic object required to retain lubricity notwithstanding prolonged submersion in a deleterious environment such as salt water. The object is first plated with a preselected corrosion-resistant metal. Next, the plating on the object is phosphatized or otherwise processed to improve its bonding capability, and then the object is coated with a fluorocarbon polymer to impart lubricity to the object sought to be protected.
In an alternative form of the process, wherein the object is electroplated or otherwise coated with a metal incapable of being phosphatized, the bonding capability of the electroplating is improved by providing it with a matte surface, as by sandblasting or the like, in preparation for the fluorocarbon polymer outer coating.

REFERENCES:
patent: 3364081 (1968-01-01), Forsberg
patent: 3494243 (1970-02-01), Kleinhenn
patent: 3877998 (1975-04-01), Guhde
patent: 4003760 (1977-01-01), Labenski et al.
patent: 4074011 (1978-02-01), Teramae et al.
Metal Finishing Guidebook and Directory, 1975, p. 531.

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