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PT nuke/Kill coil

post #1 of 12
Thread Starter 
Can a XSPC raystorm cpu block work with Nickel version of AquagraFX for GTX 580? does the nickel corrode easier than copper?

What is a recommended biocide to use in single loop using EX or RX xspc 360.

PT nuke + kill coil? i will be using Distilled Water.
post #2 of 12
The raystorm and Aquagrafx block won't have any issues, besides the nickel version for the 580 block is just a nickel plating, so there's still copper underneath the block. It's up to you which biocide you want to use, both are equally fine just go with what is cheaper/ readily available. Kill coils have less hassle since all you do is plop it in your res or inside a tubing section and leave it there while for PT nuke you'll have to put in a couple drops every time you fill it up.
post #3 of 12
I prefer copper (PT nuke) since it has less of an anodic index with the rest of the metals.

Adding silver to a loop adds another .15V galvanic potential to the loop:

The less potential the better.

corrosionplating.png?w=614
    
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post #4 of 12
Thread Starter 
post #5 of 12
Quote:
Originally Posted by Martinm210 View Post

I prefer copper (PT nuke) since it has less of an anodic index with the rest of the metals.
Adding silver to a loop adds another .15V galvanic potential to the loop:
The less potential the better.
corrosionplating.png?w=614

This. I learned this the hardway. Silver kill coils can and will cause corrosion to copper over time.
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post #6 of 12
Well, Martin's chart kind of makes me feel better that I pulled my kill coil out 2 weeks after filling my loop for the first time on my first build. But I mainly drained my loop to practice maintenance though. I pulled out my kill coil out because I had it in the tubing... and it looked like it was getting sucked into the res where the pumps were at.eek.gif
    
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post #7 of 12
Just ordered some PT nuke. thanks guys thumb.gif
post #8 of 12
meh beh i should switch to copper sulfate...?
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post #9 of 12
I'm still on the fence about silver coils. From what I've read so far on galvanic corrosion, you also need direct metal contact which you wouldn't be getting in a silver coil remote from all the blocks. Some people say the water since it's conductive makes it have contact, but I'm not really sure it's a strong enough metal contact. A lot of people have had pretty good luck with silver coils, but I personally have never used them myself.

Only thing I noticed is the galvanic index does put silver up higher. The higher up on the list, supposedly the more nobel and less reactive. Metals further down the list are supposed to want to travel to those metals higher up on the list.

I believe the amount of surface area also plays a role and the silver coil surface area is pretty small compared to the metals in the radiator etc.

Anyhow, just speculation more than anything, but silver is spreading out the galvanic potential between the mixture of metals. Not sure it's significant enough or not? I just figure copper sulfate is copper which is more similar in metal to the copper/brass/nickel parts than silver.

These are the three basic things for galvanic corrosion to occur:

1. Two dissimilar metals
2. An electrolyte (water with any type of salt or salts dissolved in it)
3. A metal (conducting) path between the dissimilar metals


We have #1 and silver does increase #1, but the water in the loop after being contaminated would just be #2 I think. #3 would only be 100% on direct metal to metal contact like brass/tin/copper radiators, or Brass/Copper/Nickel blocks, etc where metal to metal contact exists.

Perhaps the bigger question on Silver/PT nuke is how they make the water more electrolyte like (more electrically conductive). I think PH has something to do with it too since batteries and such operation on the principle and use an acid. Flushing the loop with good clean fluid regularly has got to help keep the electrolyte condition down too.

I am personally a bit more interested in exploring cathodic protection for water cooling. Seems like a missing element in WC these days..
http://www.cathodicprotection101.com/
Edited by Martinm210 - 2/4/12 at 10:48pm
    
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post #10 of 12
Quote:
Originally Posted by Martinm210 View Post

I am personally a bit more interested in exploring cathodic protection for water cooling. Seems like a missing element in WC these days..
http://www.cathodicprotection101.com/

I started reading that then I was like
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