home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: rec.boats
- Path: sparky!uunet!infonode!ingr!msdhsv!bell.b17a.ingr.com!scott
- From: scott@bell.b17a.ingr.com (Scott Bell)
- Subject: Re: Zincs on boats
- Message-ID: <1992Nov17.140523.3055@msdhsv.ingr.com>
- Keywords: corrosion
- Sender: usenet@msdhsv.ingr.com (USENET)
- Organization: Intergraph
- References: <7599@tekig7.PEN.TEK.COM>
- Date: Tue, 17 Nov 1992 14:05:23 GMT
- Lines: 33
-
- In article <7599@tekig7.PEN.TEK.COM>, alany@tekig5.pen.tek.com (Alan Yelvington) writes:
- |> The zincs on your boats are "sacrificial" electrodes
- |> to protect the rest of the metal on/in your boat.
- |>
- |> Water (especially salt water) is an electrolyte. When
- |> dissimiliar metals are suspended in it, their differences
- |> cause a current to flow between them. The metal that
- |> is giving off electrons will corrode and wear away. This
- |> can be hull plates, the inside of your engine, pitting
- |> on your prop or rudder, whatever.
- |>
- |> Zinc is a "less noble" metal that gives up electrons
- |> easily. By electrically connecting the zincs to the
- |> rest of the metal in your boat, you are able to predict
- |> where corrosion will take place. It's a lot cheaper to
- |> replace a zinc than an engine!
- |>
- Would this also eventually happen to a trailer unloading in salt water?
- I know some trailers that have lights/winches grounded to the trailer
- and/or towing vehicle.
-
- |> Your pal,
- |> AL
- |>
- Scott
- _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
- | Scott Bell | "I may be N by NW when the |
- | Intergraph Corp. - Mapping Sciences Div. | wind is Southerly - but I |
- | M/S IW17A2 Huntsville, AL 35894-0001 | know a hawk from a |
- | scott@bell.b17a.ingr.com (Internet) | handsaw." |
- | 205-730-1776 #include <std_disclaim.h> | W.S. , 'Hamlet' |
- _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
-
-