Zieba S5 Copper Color Wacked out

[jftman]

Like the Copper touch but this I would have wanted to be preventable. Patina is cool but even Patina Please. I won't polish to prevent. Mr. Zieba?

 

[b00n]

I had the same thing happen to me with my PM2 and the Flytanium Copper Scales I added, the Clip left a very noticeable difference in the patina. So I removed the clip, polished it up again, and now let it patina without the clip, even around the screws you can see a bit difference. I don't think it's really preventable. (Above, the Mark the Clip left, below after cleaning it all up with some Flitz Polish)

 

[jftman]

But can't deny this Angry Bird just think another material would be a work around. And, add to the cost. But maybe someone knows how Copper reacts to all foreign metal, or just steel?

 

[b00n]

My best guess would be Galvanic Corrosion, as seen here:

But it would be interesting if somebody with more Chemistry/Metallurgy knowledge would chime in. I'm curious about the process behind it myself. (And you're right about your Zieba, it should have have been taken into account, or at least mentioned/warned about)

 

[jftman]

Checking the clip isn't magnetic. And steel is in the green while titanium is red. Thanks for that info

 

[unwisefool]

If you want to remove the patina rub some lemon juice on the knife and let it sit for a few minutes

 

[BitingSarcasm]

Any time you have two dissimilar metals in direct physical contact, you risk galvanic corrosion as the chart above indicates. You build a dielectric current between them because the two metals have a different number of electrons in their outer shells, hence different energy levels. All that you need to transfer electrons from one metal to the next is a slightly acidic solution, like sweat, and then electrons flow from the high energy metal to the low--one gets corroded, the other gets the buildup. You can prevent this by insulating one metal, perhaps with a coat of lacquer or poly on the clip.