Coating processes – Electrical product produced
Patent
1992-07-15
1994-01-18
Beck, Shrive
Coating processes
Electrical product produced
427 96, 427309, C23C 2600
Patent
active
052798500
ABSTRACT:
A process for removing unwanted contaminant metallic oxide from the surface of a nickel branding layer of an electronic circuit package, in order to enhance the affinity of a layer of phenolic branding ink to the surface of the metallic branding layer involves treating the surface of the metallic branding layer with a hydrogen-containing, chemical reducing gas phase ambient, so that oxygen within the surface oxide chemically combines with the hydrogen component within the ambient, so as to form readily removable water. The surface of the metallic branding layer is thereby substantially free of surface oxide, providing a greater surface area of metallic-ink bonding sites. As a consequently, a subsequently deposited layer of branding ink strongly adheres to the surface of the nickel and is not readily removed during further cleaning of the circuit package.
REFERENCES:
patent: 3647532 (1972-03-01), Friedman
patent: 3827918 (1974-08-01), Ameen
patent: 4457861 (1984-07-01), Des Marais
patent: 4479890 (1984-10-01), Prabhu
patent: 4511601 (1985-04-01), Akse
patent: 4964923 (1990-10-01), Takeuchi
patent: 5009926 (1991-04-01), Fukuda
patent: 5024734 (1991-06-01), Downs
DeCrosta David A.
Linn Jack H.
Walter Martin E.
Beck Shrive
Dang Vi Duong
Harris Corporation
Wands Charles E.
LandOfFree
Gas phase chemical reduction of metallic branding layer of elect does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gas phase chemical reduction of metallic branding layer of elect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas phase chemical reduction of metallic branding layer of elect will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1135083