I am planning to do DSC experiments to make a phase diagram of a binary salt mixture. I know that with the melting point data from the DSC, we can draw the liquidus line. But how to draw lines other than the liquidus. I am attaching a binary phase diagram for reference.
Just a warning: DSC can reach temperatures as high as 500-550°C, meanwhile a lot of salts have a Tm higher than such temperture. If you think your salt(s) have a Tm higher than 500°C, you should use instead a DTA or SDT.
From DTA curve you can get information where transformation is happening. So you will obtain 2 temperatures for transformation start and finish.
You need to prepare a lot of samples with different compositions and then you can get complete picture from DTA/DSC if nothing very complex happens during phase transformation. You need to be very careful if peak in curve is superposition of several other process peaks.
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