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I know that there are some metals that just "like" to be on a surface, so if I make an alloy of such metal and some other metal, the first one will be on the surface after solidification of initially liquid alloy. This happens due to reduction of free surface energy, and I think that Gibbs' equation would be helpful here.

I'm especially interested in gold alloys


  1. I'm not sure if I'm right about Gibbs
  2. I don't know where should I search for coefficients needed in this equation
  3. I don't know how to solve and interpret it (Library at my Alma Mater is poor, and the Internet isn't sufficient)
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