New stable icosahedral phases in Al-Pd-Ru and Al-Pd-Os systems

An investigation of the high-Al part of the Al–Pd–Ru phase diagram at 790–900°C

“…The previous study revealed the formation of three structurally related cubic phases: C (Pm3, a = 0.7757 nm), C 1 (Im3, a = 1.5532 nm) and C 2 (Fm3, a = 1.5566 nm), and confirmed the formation of a stable icosahedral quasicrystalline phase earlier reported in Ref. [2]. Another complex face-centered cubic structure with a ≈ 3.96 nm (designated F 40 in Ref.…”

Al-rich region of Al–Pd–Ru at 1000 to 1100°C

“…Another cubic phase (Fm3; a = 1.56058 nm) was revealed at Al 66.8 Pd 21.2 Ru 12.0 [7] and one more (so-called (2/1) approximant with a = 2.0 nm) around Al 71 Pd 19 Ru 10 [8]. An icosahedral (I) quasicrystalline phase was found to be stable in the alloy Al 72 Pd 17 Ru 11 [9].…”

An investigation of the high-Al part of the Al–Pd–Ru phase diagram at 1000 and 1100 ºC

“…Another cubic phase (Fm 3 ; a = 1.56058 nm) was revealed at Al 66.8 Pd 21.2 Ru 12.0 [7] and one more (so-called (2/1) approximant with a = 2.0 nm) around Al 71 Pd 19 Ru 10 [8]. An icosahedral (I) quasicrystalline phase was found to be stable in the alloy Al 72 Pd 17 Ru 11 [9].…”