Some time ago we were discussing part of this title in another thread and I found it very interesting. Now someone suggested that alloys are only 2 metals heated together, so this would result some kind of mixture.
The thought on this conclusion was that brass for example has both properties of copper and that of zinc.
Now i have several question on this. If brass is only a mixture of these 2 metals, how the hell is it that brass is much much more difficult to cut that copper when zinc is extreemly soft and copper is not as hard as brass?
Another question, if alloys are only mixtures, how the hell does stainless steel not rust when it is an alloy of 70% iron ??
Some also suggested that brass do not react because zinc forms a layer of zinc oxide just like aluminium does but this time on top of the brass.
can anybody clear this up for me please?? I am
