2019
DOI: 10.5433/1679-0375.2019v40n1p3
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Quasicrystalline Phase Formation of the Al67Cu26Fe15 Alloy

Abstract: O presente trabalho teve como objetivo caracterizar a microestrutura da fase icosaedral (f-fase quasicristalina) do sistema com composição estequiométrica do quasicristal Al67Cu26Fe15. A liga ternária com composição nominal de Al67Cu26Fe15 foi processada por Moagem Mecânica de Alta Energia, como um método viável de processamento no estado sólido para a produção de várias fases quasicristalinas metaestáveis e estáveis. A caracterização estrutural das amostras obtidas foi realizada por difração de raios-X (DRX) … Show more

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“…Accordingly, the quasicrystalline structure of the two coatings was characterized as powder and after HVOF deposition. The XRD spectrum of the Al–Cu–Fe–Cr alloy (QC1) showed the decagonal quasicrystalline phase both in the powder and coating forms (tagged as d in Figure a,b), as reported previously. , For QC2, the quasicrystalline phase was detected both in the powder and coating forms and is indicated by Φ in Figure c,d . These results verified that the high-temperature HVOF thermal spray did not affect the quasicrystalline structure significantly and that the quasicrystalline phases remained after deposition on the aluminum substrates.…”
Section: Resultssupporting
confidence: 85%
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“…Accordingly, the quasicrystalline structure of the two coatings was characterized as powder and after HVOF deposition. The XRD spectrum of the Al–Cu–Fe–Cr alloy (QC1) showed the decagonal quasicrystalline phase both in the powder and coating forms (tagged as d in Figure a,b), as reported previously. , For QC2, the quasicrystalline phase was detected both in the powder and coating forms and is indicated by Φ in Figure c,d . These results verified that the high-temperature HVOF thermal spray did not affect the quasicrystalline structure significantly and that the quasicrystalline phases remained after deposition on the aluminum substrates.…”
Section: Resultssupporting
confidence: 85%
“…22,23 For QC2, the quasicrystalline phase was detected both in the powder and coating forms and is indicated by Φ in Figure 2c,d. 24 These results verified that the high-temperature HVOF thermal spray did not affect the quasicrystalline structure significantly and that the quasicrystalline phases remained after deposition on the aluminum substrates. Surface elemental analysis was also performed using EDS, and the elemental compositions of QC1 and QC2 are summarized in Table 1.…”
Section: ■ Experimental Sectionsupporting
confidence: 72%