(Al – C) Aluminium – Carbon

Pierre Perrot

Literature Data

Investigations on the Al-C diagram were mainly devoted to the solubility of carbon in liquid aluminum and to the incongruent melting of the only known carbide Al₄C₃. Consistent results are reported for the solubility of C in liquid Al₄C₃ above 1700°C. However, the various diagrams proposed disagree widely on the melting point of Al₄C₃, which is reported as low as 1990°C and as high as 2700°C [1991Sch]. [Mas2] gives a decomposition point at 2500°C. [1992Oka] pointed out, that the boiling point of Al reported by [Mas2] is 2700°C instead of the generally accepted value of 2519(±1)°C. [1991Sch, 1998Gok1, 1998Gok2] redrew the diagram, based on a Calphad assessment [1991Kum], in which Al₄C₃ melts incongruently at 2173°C, very near to...