Browse Prior Art Database

Inhibition of Dry Silver Migration

IP.com Disclosure Number: IPCOM000090624D
Original Publication Date: 1969-Jun-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 23K

Publishing Venue

IBM

Related People

Blodgett, AJ: AUTHOR [+3]

Abstract

There is a significant reduction of insulation resistance of glass, electroded with silver bearing conductors, 80 silver/2O palladium, when subjected to approx. 200 degrees C at a field of 10 volts per mil. This effect is attributed to silver migration. There is a significant reduction in this effect when the anode is solder coated with, for example, 10 tin/9O lead solder.

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Inhibition of Dry Silver Migration

There is a significant reduction of insulation resistance of glass, electroded with silver bearing conductors, 80 silver/2O palladium, when subjected to approx. 200 degrees C at a field of 10 volts per mil. This effect is attributed to silver migration. There is a significant reduction in this effect when the anode is solder coated with, for example, 10 tin/9O lead solder.

The data below shows the effect of the solder Insulation Resistance Initial After 150 Hours Untinned electrodes 10/12/ 10/3/ Tinned electrodes 10/12/ 10/12/

The data indicates that configurations like glass crossovers or capacitor elements, when electroded with silver bearing electrodes, be constructed so that the anodes are solder-coated. This is indicated in the drawing. Conductors 1 and 2 are separated by glass layer 3. Anode conductor 2 is coated with solder 4.

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