Electrochemical characterization of Al84Ni9Y7 metallic glass after annealing process

Babilas, R.; Bajorek, A.; Spilka, M.; Łoński, Wojciech; Szyba, Dawid

doi:10.1016/j.jnoncrysol.2019.04.042

Cited by 6 publications

(3 citation statements)

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“…[6] investigated the corrosion morphology of the ribbons before and after heat treatment, which was immersed in 3.5 wt% NaCl solution for 60 h and confirmed the occurrence of only slight signs of local corrosion for the 523 K heat treatment sample. Similarly, Babilas et al [22] observed that the surface of annealed Al84Ni9Y7 ribbons after corrosion tests was free of pitting. The magnetization behavior of the investigated Al-based alloys was evaluated using a VSM apparatus (Fig.…”

Section: Resultsmentioning

confidence: 77%

“…The lowest corrosion rate (vcorr = 0.0003 mm/year) was calculated for the Al88Y7Fe5 alloy after annealing at 250 °C, and the greatest weight loss was found for the Al88Y6Fe6 alloy as-spun state (vcorr = 0.021 mm/year). The variable effect of the annealing process on the change in corrosion resistance of Al-based amorphous alloys is confirmed by research carried out in [1,3,6,21,22]. In the work [6] showed that after annealing at 523 K of the amorphous Al86Ni10Zr4 melt spun alloy, the corrosion resistance of the ribbons improved.…”

Section: Resultsmentioning

confidence: 80%

“…In the work [6] showed that after annealing at 523 K of the amorphous Al86Ni10Zr4 melt spun alloy, the corrosion resistance of the ribbons improved. In turn, polarization tests of the Al84Ni9Y7 alloy revealed the negative effect of heat treatment at 373 to 673 K on the corrosion resistance of these materials, because the samples tested after annealing exhibited a lower potential than the sample in the spun state [22]. Thus, the corrosion resistance of the alloy is mainly dependent on its chemical composition and microstructure.…”

Section: Resultsmentioning

confidence: 99%

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Influence of annealing conditions on changes of the structure and selected properties of Al88Y7Fe5 and Al88Y6Fe6 alloys

Babilas,

Spilka,

Łoński

et al. 2023

Bulletin of the Polish Academy of Sciences Technical Sciences

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Al-Y-Fe amorphous and nanocrystalline alloys are characterized by a unique collection of diverse properties that are influenced by various factors, including heat treatment. In this paper, the effect of heat treatment on the structural changes and selected properties of Al-Y-Fe metallic glasses in the as-spun state is investigated. The structure of the Al88Y7Fe5 and Al88Y6Fe6 alloys was examined by X-ray diffraction (XRD) and Mössbauer spectroscopy (MS). The corrosion resistance of the samples was characterized using polarization tests in a 3.5% NaCl solution at 25 °C. The effect of sodium chloride on the surface was studied with scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). The magnetic properties of Albased alloys were explored using a vibrating sample magnetometer (VSM). It was revealed that the tested alloys show better properties after annealing than in the as-spun state. The annealing of the Al88Y7Fe5 and Al88Y6Fe6 alloys in the temperature range of 200 to 300 °C improved the magnetic properties and corrosion resistance of these materials. After 3,600 s, the better EOCP values were recorded for the Al88Y6Fe6 and Al88Y7Fe5 alloys after annealing at 300 °C and 200 °C, adequately. On the basis of the polarization tests, it was concluded that the electrochemical properties are better for Al88Y6Fe6 alloys after annealing at 300 °C.

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Section: Resultsmentioning

confidence: 77%