im going to use a 9 volt battery and attach two electrical wires to the two sides and attach those to two nails.will this work as impressed current?
2007-11-25 09:21:38 · 2 answers · asked by Speeding D 4 in Science & Mathematics ➔ Engineering
I sailed on a vessle that had a CAPAC unit (Cathodic Protection Automatic Controller). This unit impressed a voltage onto the hull to cancel out any voltage being produced by electrolytic corrosion.
You are correct in you assumption that placing a reverse voltage will protect the metals. However if to much voltage is applied then you merely reverse the process and the other electrode corrodes.
In order for your experiment to work you need to adjust the voltage to a level just high enough to cancel out the electrolytic voltage being generated. Any more voltage then what it takes to null out corrosion voltage and you merely reverse the electrolytic corrosion process and the other electrode will corrode instead.
You can demonstrate this effect in your experiment by having a control and several other tests which compare not only the amount of voltage being applied but the polarity as well.
2007-11-25 09:49:52 · answer #1 · answered by MarkG 7 · 1⤊ 0⤋
It should, provided you don't need cathodic protection for very long. You may get a more reliable connection of you purchase or scavenge a snap connector for the battery.
2007-11-25 17:28:55 · answer #2 · answered by poorcocoboiboi 6 · 1⤊ 0⤋