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Date:         Fri, 30 Jun 2006 16:13:04 -0400
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: another discussion point on coolant system corrosion
Comments: To: Alistair Bell <albell@UVIC.CA>
In-Reply-To:  <26A4809E-A2A0-403B-A1EB-F9AB9D596AF0@uvic.ca>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 12:00 PM 6/30/2006 -0700, Alistair Bell wrote:
>The surface area of the sacrificial metal, Al, was much, much greater
>than the "gaining " metal stainless. Imagine the corrosion if it were
>the other way around, or imagine someone using aluminium pop rivets
>in a stainless structure exposed to salt air or spray, the rivets
>would be corroded away in no time.


I've seen aluminum castings (aluminum cleat on anodized aluminum
mast, s/s fastenings) burst apart because the corrosion products from
the aluminum could no longer fit in the slack space of the mounting holes.




--
David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage," '85 GL "Poor Relation"
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