How can I find out more?

davebolton · Nov 17, 2001

I have read a post here that I am interested in seeing more material if anyone knows. Let me know.

Thanks.

http://www.bladeforums.com/forums/showthread.php?threadid=177422&referrerid=116108:confused:

DC KNIVES · Nov 17, 2001

try it without the smilie,Dave

Keith Montgomery · Nov 18, 2001

I hope this is the link that you were actually trying to post. It is to a thread on galvanic corrosion.

http://www.bladeforums.com/forums/showthread.php?s=&threadid=177422&referrerid116108

davebolton · Nov 18, 2001

I was looking for information related to the use of an anode (copper, brass, zinc, magnesium, etc...) to reduce or stop the oxidation of steels. More particularly the use of these anodes to reduce the oxidation of a high carbon blade.
Any ideas?

george tichbourne · Nov 19, 2001

Sacrificial anodes reduce corrosion by corroding themselves, in order to work the corroding anode must be exposed not hidden. In the best case of corrosion protection you will have a pristine blade attached to a pitted discoloured magnesium guard or pommel.

davebolton · Nov 19, 2001

Thanks George, does the anode have to be magnesium or will other materials work. What about a replaceable disk of magnesium etc. placed in the bolster so it could not be seen but still had oxigen exchange. Sort of like a rust battery, replaceable like in a watch.

Any ref. material that I would understand?

C L Wilkins · Nov 20, 2001

Go to Yahoo, Google or any other search engine and do a search on "cathodic protection". There are a number of sites on the internet that address this issue.

When I was in the Navy about 300 years ago, I maintained the cathodic protection system on the ship I was on.

Come to think of it, the Navy would be the best branch of the service if it didn't have any ships! Going to sea was like being thrown in jail with a chance of drowning!

C Wilkins

george tichbourne · Nov 20, 2001

I say Magnesium because it is one of the most reactive metals that is stable enough for normal use ie normally available. Aluminum is next lower on the table then I think zinc and copper but I do not have my table of elements right handy. If you have one the most reactive (useful as sacrificial anodes) metals are at the top of the table.

You cannot hide sacrificial anodes, unless they are exposed to the element which causes the corrosion so they may corrode themselves instead of the protected metal they don't work. Take a look at an outboard motor, the sacrificial anode is a bare unpainted piece of metal attached near the skeg. If it were painted it would not work.

davebolton · Nov 20, 2001

Thanks again for the replies folks, I will also do that search on "cathodic protection".
Interesting concept.