What happens to the melting (freezing) temperature of a pure metal when it is mi

Question

What happens to the melting (freezing) temperature of a pure metal when it is mixed with another metal? What region of the phase diagram consists entirely of a single liquid phase? What region consists of a single liquid phase and solid tin? What region consists of a single liquid phase and solid bismuth? What is the lowest melting temperature possible for any composition of bismuth and tin? What is your best estimate of the composition of that will give this lowest melting temperature? What happens to the melting (freezing) temperature of a eutectic composition when it is mixed with either one of the metal components? What might happen to the melting (freezing) temperature of a eutectic composition if a third metal were added to the composition?

Explanation / Answer

Answer 1) Effect of adding another metal to pure metal (i.e. alloying) on it's MP/FP.

a) Addition of another metal to the pure metal is termed as alloying.

b) Alloying metals change their thermal tolerance because they consist of two or more pure metals. Alloys have no single melting point, but instead, melt over a range of temperatures.

c) Their molecular structure formed on alloying can raise the overall melting range of the metal above that of any of its component metals.

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