Hopefully this is self explanatory, but in case not, I'm looking for something like binary phase diagrams (or ternary), but the y-axis shows electrical or thermal conductivity rather than temperature. Of course, temperature and pressure have effects on conductivity too, but "standard" temp/pressure is all I'm after. I'm interested in various binaries/ternaries (and beyond!) but if there were some repository of such diagrams for binaries that would be a great starting place.
I say "electrical or thermal conductivity" as I'm happy to approximate one by the other via Wiedemann-Franz using the general Lorenz number or some weighted average of Lorenz numbers. In actuality, it is the thermal conductivity I'm interested in.
Obviously I've Googled, but without a great deal of success. Perhaps I just don't know the correct name for this type of diagram. Whilst obviously I'm looking for something which has a lot in common with a phase diagram, what I'm after probably isn't called a phase diagram, as it has nothing (directly) to do with the matter phases of the constituents.
Would be very grateful for any elucidation on this.
Thanks
Hi, the short answer is "No". In public domain no such diagram is available. However, since your demand is less (T=RT and P=0.1MPa) I can try to answer that. Consider these two facts -
1. Thermal conductivity in metallic system is essentially due to phonon
2. Any imperfection in the lattice would only hinder phonon movement (i.e. reduce th. cond.)
So, to draw any "binary diagram" take two extreme values (i.e. th. cond. of pure elements) and join them by straight line. Now for any arbitrary alloy composition the resultant th. cond. would be less than this value. This straight line would represent the upper ceiling of th. cond.
If by any chance you find value of th. cond. of an alloy then you can have a parabolic fit with these 3 points which will give you a first hand idea.
Well, I'm not sure what the figure added earlier was representing - obviously thermal conductivity vs density, but for what materials it is entirely unclear.
But pretty sure it is of no help in determining thermal conductivity as a function of alloy composition percent (e.g. of copper-tin binary alloy vs %tin) which is what I was requesting. I thought that was clear from "like a binary phase diagram", apologies if I was not specific enough.
In any case, I have no access to CES software (edu or otherwise).
Chandra Bhanu Basak's answer was informative, but having been able to find a couple of actual [thermal] conductivity vs binary composition percent diagrams, it seems that the "curves" are very unlike parabolas - the ones I found had sharp "v" shape discontinuities in gradient (at the minimum conductivity). Moreover, the point of the discontinuity did not appear to be at or particularly near the eutectic point of the alloy.
I'll keep on looking and add links to any examples I did find (don't have the ones I did find at hand), but seems that a naive parabolic fit is unlikely to help much.
Thanks
It was a general diagram including some 4000 materials . If you need details, you can run it for say Ferrous and Titanium alloys( as an exemple).
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