Sciencemadness Discussion Board

Boiling points of metals!

lahthffire - 1-5-2006 at 14:18

I have two questions:

1. Do metal alloys demonstrate boiling point elevation the way solvents with a solute in them do? And if so, would it be calculated in a similar manner?

2. How does pressure affect the boiling point of a metal? I see boiling points listed for metals, but they never state at what pressure they were taken.

Any information anybody has regarding boiling points of metals would be greatly appreciated. Also, if anybody knows of any books or other literature on this topic, please speak up! I would love to buy a book on this topic.

kazaa81 - 1-5-2006 at 14:24

Search for CRC Handbook of Chemistry and Physics...it contains much tables that can full your answers.

Hope to have helped

lahthffire - 1-5-2006 at 15:00

Also, does anybody know where I can find pressure/temperature/density relationships for silver vapor? I'll check the CRC, but won't be surprised if I don't find it there.

12AX7 - 1-5-2006 at 19:22

Probably does. Zinc boils at 1600°F or so but I've poured non-boiling brass at 2200°F.

(No, I won't covert those. My "foundry" works in Fahrenheit and I like it that way! :D )

Tim

leu - 2-5-2006 at 03:24

You may find some thing useful in Mellor's :D

unionised - 4-5-2006 at 11:13

"How does pressure affect the boiling point of a metal? I see boiling points listed for metals, but they never state at what pressure they were taken."
Much the same way as it affects the boiling point of other things- higher temperature at higher pressure- roughly logarithmicaly.
As with most things, if the pressure isn't stated for a boiling point it's assumed to be 1 atmosphere.
In general there's nothing magical about metals so they should behave much the same way as other things e.g. with a bit of luck Raoult's law will give the vapour pressure.