Discussion in 'Chemistry' started by arauca, Oct 11, 2013.
Diamond been a Crystal ,cam it go trough melting and recrystallizing ?
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Yes, you can melt it at high temperature and pressure.
Wow now we get some science.
Are you saying is going to melt , Hi. Temp. & Pressure . My leading question Ok. it is molten but now I am going to reduce the pressure and reduce tem. solidification will take place . question : will the solid become a diamond or just graphite or solid carbon ?
Come on Arauca, if you google "carbon phase diagram" you get this in about 15 seconds:
I see, there is a critical pressure with respect to temp.
As with all substances.
I believe you are wrong In a gas system you liquify
Oh, ye of so little understanding of basic things! That's simply a step away from solidification / crystallization.
I don't understand the bullshit you are pulling . If you are so smart and I so dumb so show to this idiot your wisdom.
No BS and of course you don't understand. That would require just a tiny bit of scientific knowledge - which you do NOT have. Try reading about phase change or phase transition.
Be warned - it contains words of more than one syllable, but if you try really hard you might be able to understand some of it.
Just thought i would add this periodic table, it is one of the best i have found, there is a temp slider at the top, It tells you what state each element is at different temps, Carbon is the first element to become a solid as temps drop from 6000degrees.
great periodic table. thanks for locating that.
At what temperature diamond ignited in air at atmospheric pressure ?
It doesn't melt at our normal atmospheric pressure.
That was settled with the phase diagram at post #4
Don't you have Google? 1500 F or so.
Why should he Google when he can get folks like you to do it for him?
I don't believe that was my objective .
Does diamond and graphite have the same kindling point then, what is the difference between nuclear grade graphite and does it have the same kindling point as diamond .
Do you see how well both of you can read mind
I'm not sure your question has a single answer. The temperature at which forms of a solid catch fire depends on their physical form, notably their surface/volume ratio. Powders burn far more readily than slabs of material. Think of iron filings. Coke burns fairly easily, though you have to heat it up quite a bit to get it going. Solid graphite, as used in a nuclear reactor for example, will I'm sure need a lot more heat.
I don't know where you are going with the idea of diamond, but obviously this could never be used as the moderator in a reactor. Apart from the expense, you can't machine it and it has totally different (far inferior) heat transfer properties.
What are the( optical ) indication that the diamond burns ? or by the same argument graphite
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