WIX Archives

Galvanic Corrosion

Posted by bdk on Wed Mar 03, 2004 12:16:35 PM

In reply top SAAF Spit 9 ... posted by Dave on Tue Mar 02, 2004 11:58:19 PM

Radials seen to be quite a bit more forgiving in that respect... The other issue with long term storage is galvanic corrosion which occurs when two different metals are in contact that are far apart on the galvanic scale.

Note that lead, silver, nickel, brass/bronze, and aluminum are commonly used in bearings- some plated one on top of the other, others as alloy constituents, and usually applied to a steel backing plate.

An electrolyte like water (or residual acids from combustion) enhance this effect.

: IIRC a pickled engine was put in this aircraft , without b
: eing completely stripped down ...comment made by an engine
: er that it would only be a matter of time before it quit i
: n flight ..unfortunately that is what happened.

The Galvanic Series Chart

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