Al – Rh (Aluminium – Rhodium)

Tamara Velikanova

Literature Data

Literature data, apart from thermodynamics, up to 1986 are given in [Mas2]. The Al-Rh system was subsequently studied by several techniques and for different temperature and composition ranges which are listed in Table 1. These investigations confirmed stable compounds of Rh₂Al₉, Rh₂Al₅ as well as RhAl, and discovered some new interstitial phases [1992Jun, 1997Gri, 1997Got, 1998Li, 1999Gru, 2000Gru]. This system exhibits six intermetallic compounds: Rh₂Al₉, two phases O₁ and O₂ near RhAl₃ stoichiometry, Rh₂Al₅, Rh₃Al₇ and RhAl, for which the structure and composition are well established. Rh₂Al₅ presents two polymorphs: high-temperature βRh₂...