Quasicrystalline Phase Formation in the System Al65Cu20Fe15
DOI:
https://doi.org/10.5433/1679-0375.2016v37n1p99Keywords:
Quasicrystal, Catalyst, Quasicrystalline Phases, CharacterizationsAbstract
Structural, morphological and existing phases in quasicrystalline alloy with nominal compositions Al65Cu20Fe15 were investigated by X-ray Diffraction (XRD), Scanning Electron microscopy (SEM)/ Energy Dispersive Spectroscopy (EDS), Differential Scanning Calorimetry (DSC) and Specific Surface Area (BET). The results show that morphology were observed several of quasicrystalline phases in function of obtaining electric induction furnaces and arc under experimental conditions where both crystalline and quasicrystalline phases coexist at 850°C. When the aluminum loss inside the grains is too high, the icosahedral phase transforms into ? cubic phase (CsCl type). Due to thermal events (exothermic) in a range 400-1200°C for an increase of the phase number and surface area presents an optimal candidate may be used as catalyst in catalytic reactions because of its thermal stability. Finally current and future possible applications of quasicrystals Al-Cu-Fe are discussed in the light of its properties.Metrics
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