SHS of Al70Co15Ni15 and Al65Cu20Co15 Quasicrystals

Abstract

Decagonal quasicrystals in Al–Co–Ni and Al–Co–Cu systems were first prepared by SHS method. XRD analysis showed that the synthesis of Al–Co–Cu system yields Al₇₀Co₁₅Ni₁₅ quasicrystalline phase; meanwhile, in the Al–Co–Ni system, the synthesized product contains Al₇₀Co₁₅Ni₁₅ quasicrystals as a basis with minor addition of cubic Al₅₈Co₇₆Ni₆₆ phase. Both synthesized materials have weak magnetic properties with maximum magnetization of 0.145–0.730 emu/g for the applied magnetic field of 10 kOe.