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Palladium Gold Plating Treatment

IP.com Disclosure Number: IPCOM000088620D
Original Publication Date: 1977-Jul-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

York, ER: AUTHOR

Abstract

This treatment is part of a palladium-gold plating process for KOVAR* such as the one described in the publication entitled "Palladium-Gold Plating For High-Temperature Application", W. M. Albrecht et al, IBM Technical Disclosure Bulletin, Vol. 19, No. 7, December 1976, page 2495. More specifically, it is related to the treatment of the non-nickel-cobalt surface referred to in that publication.

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Palladium Gold Plating Treatment

This treatment is part of a palladium-gold plating process for KOVAR* such as the one described in the publication entitled "Palladium-Gold Plating For High- Temperature Application", W. M. Albrecht et al, IBM Technical Disclosure Bulletin, Vol. 19, No. 7, December 1976, page 2495. More specifically, it is related to the treatment of the non-nickel-cobalt surface referred to in that publication.

Accordingly, the treatment includes the steps of: 1) Mechanically bead blasting the KOVAR surface to roughen the surface so as to promote subsequent adhesion of the noble

metals. 2) Hot alkaline soaking and electrolytic cleaning the KOVAR surface to remove soluble contaminates from the surface. 3) Etching the KOVAR surface in concentrated HCl acid for a suitable time period to neutralize alkali, to remove surface

imperfections and to enhance adhesion. 4) Electro-activating in a cyanide solution prior to the initial palladium plating step referred to in the prior publication.

Thereafter, the plating process of the aforementioned publication is effected. Further treatment using steps 2-4 described above is provided prior to effecting each successive gold plating step associated with each particular successive discrete gold layer being added. As such, each successive step 3 is carried out at a reduced time. * Trademark of Westinghouse Electric Corporation.

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