“…[3,4] and references therein). In the binary systems Al-Ru and Al-Os have been found: RuAl 6 , Ru 4 Al 13 , Ru 2 Al 5 , RuAl 2 , Ru 2 Al 3 , RuAl [5], and isotypic Os 4 Al 13 , OsAl 2 , Os 2 Al 3 , OsAl, respectively [2]. Therefore, there are good reasons to expect some similarity in the phase diagrams of the systems Al-Ir-Ru and Al-Ir-Os.…”