The oxidation at 500°C of AlCuFe quasicrystalline powders: A X-ray diffraction study

Formation of nanostructured Al 64 Cu 23 Fe 13 icosahedral quasicrystal by the ball milling technique

“…1b where all the diffraction peaks can be indexed according to the icosahedral scheme proposed by Cahn et al [20], in good agreement with previous works [21,22]. Following Weisbecker et al [23] we determine the six- dimensional lattice constant obtaining a value of a 6D = 6.309Å which is very close to values reported previously [23,24] (for more details see [25]). After ball-milling, a nanostructured quasicrystal is formed, which is indicated by a reduction of the peak intensity and the broadening of the diffraction peaks.…”

Wetting and adhesion properties of quasicrystals and complex metallic alloys

“…Oxidation of Al-based compounds is well known to take place at room temperature (RT), especially in water [25], and even more so at temperatures comprised between RT and the peritectic temperature [26]. We have therefore studied the contact angle of water with specimens that were heat treated in a way as to monitor the nature, thickness and roughness of the oxide layer grown in ambient air or oxidized in situ after depositing thin layers of pure aluminium on a γ-AlCrFe sample placed in a vacuum chamber.…”

Influence of high energy milling on the microstructure and magnetic properties of the Al–Cu–Fe phases: the case of the i-Al64Cu23Fe13quasicrystalline and the ω-Al70Cu20Fe10crystalline phases

“…Similar results have also been observed in the literature. 19,24 In similar way, Fig. 1(b) shows the X-ray diffraction pattern for the heat treated Al 70 -Cu 20 Fe 10 alloy.…”