Metal working – Method of mechanical manufacture – Electrical device making
Patent
1996-07-09
1998-08-04
Arbes, Carl J.
Metal working
Method of mechanical manufacture
Electrical device making
29851, 428552, H01R 900
Patent
active
057875782
ABSTRACT:
Disclosed is a method of selectively depositing a metallic layer on a metallic feature on a ceramic substrate. The metallic layer preferably may be elemental nickel particles, elemental copper particles, a mixture of copper and nickel particles, or copper
ickel alloy particles. The metallic layer is deposited as a paste mixture which includes the metallic particles and a binder material. Through a subsequent heating step, the metallic layer tightly bonds to the metallic feature but only loosely bonds to the ceramic substrate. Thereafter, an ultrasonic treatment is applied to remove the loosely adhered metallic layer on the ceramic substrate. The metallic layer on the metallic feature, being tightly bonded, is not removed by the ultrasonic treatment.
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Farooq Shaji
Kaja Suryanarayana
Knickerbocker John U.
Peterson Brenda
Reddy Srinivasan N.
Arbes Carl J.
Blecker Ira D.
International Business Machines - Corporation
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