jssailem
SBO Weather and Forecasting Forum Jim & John
- Oct 22, 2014
- 21,227
OK... While drifting, I can see we have addressed chapters 1-3 and in 4 the concepts of a corrosion...
Electrochemical as in what happens to my aluminum mast when it sits exposed to the elements and I scrape the surface layer of aluminum oxide off...
Galvanic as in the Zinc attached to my shaft to protect my prop
and Electrolytic where an electrical current is in the mix and this outside source is flowing between the two metals under my boat in the electrolyte I enjoy sailing.
It is the exchange of atoms that is Corrosion. That the tables help to provide a guide to identify the corrosion potential of various metals in volts. The greater the separation the better the less noble metal will give up it's atoms for the more noble metal...
Electrochemical as in what happens to my aluminum mast when it sits exposed to the elements and I scrape the surface layer of aluminum oxide off...
Galvanic as in the Zinc attached to my shaft to protect my prop
and Electrolytic where an electrical current is in the mix and this outside source is flowing between the two metals under my boat in the electrolyte I enjoy sailing.
It is the exchange of atoms that is Corrosion. That the tables help to provide a guide to identify the corrosion potential of various metals in volts. The greater the separation the better the less noble metal will give up it's atoms for the more noble metal...