Tuesday, May 22, 2018

Dissimilar metals and Galvanic Action - Acorn to Arabella



A little background first, the YouTube channel Acorn to Arabella...
We are building a 38’ wooden sailboat designed in 1934 by William Atkin. Atkin calls this particular boat “Ingrid” but our vessel will be named “Arabella”, once built we intend to take her to the most far flung corners of the world. We are documenting every aspect of the build as we go, we hope to inspire and educate people along the way and to experience as much of this wonderful world as possible in the process.
In this week's episode (or rather the episode from April 13, 2018), Steve (the guy with the awesome beard) is looking at using various metals as fasteners on the boat. Apparently it matters whether the metal is very reactive (less noble) or not very reactive (more noble).


Specifically, Steve puts various metal samples in salt water alone and in various combinations to see which metals should and should not share fasteners in the boat.


I haven't yet checked out the follow-up where Steve looks at the effects of the metal corrosion on various woods.

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