aspire
The Water Cooling Guru
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Um, no they will corrode, not fast but they will.
The green that builds up on brass is corrosion, Nickle and Silver do to, silver gets black, nickle to a small extent does too. (NO, NO, NO, WRONG)
Gold, besides platinum is one of the least reactive metals commonly found, opposite of things like aluminum or Sodium and potasium.
Now the real question is how fast does corrosion happen, for our purposes, lets say 1 year life span, because most of us are gear whores.
Gold, Nickle and Silver won't show signs of corrosion. Brass will have starts of corrosion, but again it's minor.
So "Will they corrode?" The answer is very dependent on expected life span.
But the real question should be... How Bling do you want to be?
No, your confusing oxidation or tarnishing, with corrosion.
These are completely different.
Tarnishing is simply a reaction between the very surface of a metal and oxygen which causes discoloration and a change in chemical properties. Might it eat away some of the metal, sure, but we're talking about a thickness measured in thousandth's of an inch.
Now in regards to corrosion...
In a water cooling loop where you are mixing metals the less noble metal is the one which will be corroded (eaten away).
In the case of Aluminum and Copper, Aluminum is the less noble and is the one which will show the signs of pitting, and corrosion.
The copper will lose it's shine because the aluminum particles in the loop act like sand blasting on it's surface.
Also Aluminum should never even be compared to Sodium, or Potassium.These are alkali metals, and react violently with water. A liquid cooling loop that uses solely aluminum is perfectly safe. Finding aluminum blocks is not easy as the consumers have boycotted it's use as there is simply no point.
Get your facts straight and don't spread false truths about corrosion, it just makes my job harder than it needs to be.