Fe – P (Iron – Phosphorus)

Pierre Perrot, Sofia Batista, Xianran Xing

Literature Data

The Fe-P system was assessed by [1988Rag, 1990Gus, 1990Oka] with an intensive literature survey up to 1986. The diagram was then known between 0 and 40 at.% P and was completed by [1997Zai] between 40 and 50 at.% P. The phase diagram between FeP and P is still unknown although hyperphosphides FeP₂ and FeP₄ are known to exist. A large amount of detailed thermodynamic research has been performed owing the importance of phosphorus in iron and steel industry and in the purpose of understanding the behavior of systems with strong interparticle interaction [1995Zai3]. Absolute entropies of the three phosphides Fe₃P, Fe₂P and FeP were derived from the application of the third law to heat capacities [1994Dob1, 1994Zai2, 1995Zai2]. The Gibbs energy of formation of these phosphides was ...