SOLUBILITY OF CARBON IN LIQUID AL AND STABILITY OF AL4C3

Using thermodynamic models the properties of the Al-C liquid phase hav e been evaluated from experimental information on the carbon solubilit y in liquid Al. After slight modification of the description of Al4C3 presented by Gluschko and Gurvitch [1], the solubility has been descri bed very well from 950 to 2500 degrees C with a regular solution model for the liquid phase. Stability of Al4C3 was examined through thermod ynamic calculations under various conditions. It has been shown that t he description of Al4C3 can account very well for most thermochemical measurements in a wide temperature range.