From: "Ian Chapman" <[email protected]>
Subject: RE: Galvanic Corrosion
Not really for that length of time. It's recommended to have a lead plated
or tin plated washer between the two surfaces. After 15 years a bit too
late for that now. The corrosion is much worse if the contact area is wet.
You get a white powder there and it's a disaster for electrical contact
resistance.
Regards Ian.
> ----------
> From: Richard Steele[SMTP:[email protected]]
> Sent: Monday, February 01, 1999 9:46 AM
> To: [email protected]
> Subject: Galvanic Corrosion
>
> Treggers,
>
> Has anyone had any experience of long term (5, 10 or 15 years) galvanic
> corrosion between Austenitic Stainless Steel and Aluminium?
>
> The table in Annex J of EN60950 states the electrochemical potential to
> be 0.7V whilst I have other tables that only show 0.5V.
>
> What form of corrosion takes place, does the resistance increase at the
> junction of the 2 metals?
>
> Does anyone know the source of the data in Annex J?
>
> Regards
>
> Richard Steele
> Fujitsu Telecommunications Europe Limited
>
