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Surface Preparation Method

IP.com Disclosure Number: IPCOM000078297D
Original Publication Date: 1972-Dec-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Missel, L: AUTHOR

Abstract

Smooth metallic surfaces upon which subsequent plating will be done often require pretreatment to improve adhesion. Such pretreatment must also maintain the smooth surface characteristics and not roughen or pit the surface.

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Surface Preparation Method

Smooth metallic surfaces upon which subsequent plating will be done often require pretreatment to improve adhesion. Such pretreatment must also maintain the smooth surface characteristics and not roughen or pit the surface.

In the case of aluminum materials, such processing may be as follows: (a) vapor degrease, (b) deoxidize, (c) zincate treatment in a composition comprising NaOH, ZnO, Rochelle salt and diethylene triamine-pentacetic acid pentasodium salt for about one minute, (d) nitric acid rinse, (e) thirty second zincate treatment as above in (c), and (f) plate. This double-zincate treatment provides adhesion, without the severe roughening and pitting inherent in alternative methods.

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