Formação de Fases Quasicristalinas No Sistema Al65Cu20Fe15

Lourdes Cristina Lucena Agostinho Jamshidi; Luciano Nascimento; Reza Jamshidi Rodbari; Celmy Maria B. de Menezes Barbosa

doi:10.5433/1679-0375.2016v37n1p99

Quasicrystalline Phase Formation in the System Al65Cu20Fe15

Authors

Lourdes Cristina Lucena Agostinho Jamshidi Centro de Tecnologia e Geociências- CTG/UFPE
Luciano Nascimento Centro de Tecnologia e Geociências- CTG/UFPE
Reza Jamshidi Rodbari Centro de Ciências Exatas e da Natureza-CCEN/UFPE
Celmy Maria B. de Menezes Barbosa Centro de Tecnologia e Geociências-CTG/UFPE

DOI:

https://doi.org/10.5433/1679-0375.2016v37n1p99

Keywords:

Quasicrystal, Catalyst, Quasicrystalline Phases, Characterizations

Abstract

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.

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Author Biography

Luciano Nascimento, Centro de Tecnologia e Geociências- CTG/UFPE

Licenciado em Física (UFPB),Bacharel em Física (UFCG),Especialista em Matemática (IMPA/UFPB),Mestre em Ciências de Materiais( UFPB) ,Doutor em Engenharia Química (UFPE).

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Published

2016-03-16

How to Cite

Jamshidi, L. C. L. A., Nascimento, L., Rodbari, R. J., & Barbosa, C. M. B. de M. (2016). Quasicrystalline Phase Formation in the System Al65Cu20Fe15. Semina: Ciências Exatas E Tecnológicas, 37(1), 99–106. https://doi.org/10.5433/1679-0375.2016v37n1p99

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Issue

Vol. 37 No. 1 (2016)

Section

Original Article

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