Novel silver compositions

Details Novel silver compositions Novel silver compositions

1975-02-26

1977-01-04

Sebastian, Leland A.

Compositions

Electrically conductive or emissive compositions

Free metal containing

252518, 106 1, 428434, H01B 102

Patent

active

040011461

ABSTRACT:
Compositions useful for making electrical conductor patterns on a nonconductive substrate, the compositions comprising metal powder and 1-5% glass-free inorganic binder. The binder consists essentially of certain amounts of bismuth oxide and oxides of copper and/or lead, and optionally MnB.sub.2 and/or MnO.sub.2. The metal powder is either silver or a mixture of silver with a second metal powder; the second metal powder is Pt, Pd, Au, or an alloy of Cu with one or more of Pt, Pd, Au, and Ag. The weight ratio of Ag to other metals is at least 17/1. These compositions are useful for making conductor patterns on substrates, which patterns have good adhesion to the substrate, both initially and after thermal aging (e.g., 150.degree. C. for 48 hours).

REFERENCES:
patent: 2819170 (1958-01-01), Short
patent: 3293501 (1966-12-01), Martin
patent: 3763409 (1973-10-01), Sheard
patent: 3776769 (1973-12-01), Buck et al.
patent: 3799890 (1974-03-01), Smith
patent: 3799891 (1974-03-01), Smith
American Ceramic Society Bulletin 46, 789 (1967), "An Air Fired Gold-Copper Oxide Paste".

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