Reduction of Oxidative Melt Loss of Aluminum and Its Alloys

Das, Subodh K.; Ningileri, Shridas

doi:10.2172/877410

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…7). Until now, we have calculated the values of n through logarithm of experimental data on equation (2). The values for n are found from the slope of the most probable line by the least squares method.…”

Section: (B)mentioning

confidence: 99%

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STUDY OF OXIDATION KINETICS OF Al-Si ALLOYS WITH HIGH CONCENTRATION OF IMPURITIES (Fe, Zr, V)

Петрова¹,

Yaneva²,

Miteva³

et al. 2022

adeletters

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Aluminium alloys are used as lightweight materials especially in the aerospace and automotive industries. They have a number of properties such as high corrosion resistance due to the surface oxide coating, low relative weight and better castability. At normal temperatures, metal oxides are more resistant than the metal itself. The oxide layer is much thinner than the metal but protects it from interacting with the air. The kinetics of oxidation processes is the subject of the current work. As the temperature rises, the oxidation process usually proceeds in the presence of water vapour, and its rate depends on various factors, including the initial oxide layer and oxidation kinetics. The values of the oxidation exponent n аrе calculated for aluminium ribbons with different contents of Fe, Mg and Sb. Their influence on the intensity and two-stage tendency of the oxidation process is established.

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Section: (B)mentioning

confidence: 99%

“…In the melting process, aluminium reacts with the gases contained in the atmosphere and oxidizes. The loss of Al from the oxidation of the melt is over 5% [2].…”

Section: Introductionmentioning

confidence: 99%

STUDY OF OXIDATION KINETICS OF Al-Si ALLOYS WITH HIGH CONCENTRATION OF IMPURITIES (Fe, Zr, V)

Петрова¹,

Yaneva²,

Miteva³

et al. 2022

adeletters

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“…Its high vapor pressure and strong reactivity, however, can cause significant loss of material through dross formation. 12 Primary aluminum produced by the conventional Hall-Héroult electrolytic process typically contains only trace amounts of magnesium (in the parts per million, or ppm, range), but Mg is intentionally added to most types of cast and wrought alloys, to specific concentrations typically ranging from 0.5 wt% to 5 wt%. 13 The use of LIBS analyzers for process control in the secondary aluminum industry, including aluminum recycling, therefore requires a comprehensive understanding of Mg emission and its behavior in the melt, in order to determine how the contribution of the vapor phase influences the measured signal.…”

Section: Introductionmentioning

confidence: 99%

Vapor-Phase Contribution to Laser-Induced Plasma Emission of Magnesium in Liquid Aluminum

Thorarinsdottir,

Maghsoudi,

Leosson

2023

Appl Spectrosc

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Liquid aluminum containing the important alloying element magnesium in varying concentrations was analyzed using in-situ laser-induced breakdown spectroscopy (LIBS). Magnesium emission shows an exponential dependence on melt temperature that correlates well with the expected partial pressure of magnesium above the aluminum melt. Furthermore, comparison with LIBS measurements on corresponding solid samples supports the conclusion that a significant part of Mg emission from liquid metal samples originates from the vapor phase above the metal surface. Simultaneously, curves of growth measured over four orders of magnitude in Mg concentration reveal a level of self-absorption for liquid aluminum samples that is stronger than for solid aluminum samples having a corresponding Mg concentration, and beyond what is expected from conventional plasma models. The implications for measurements of volatile species in liquid metals in general are discussed.

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Oxidation of Flash-Anodized Al-Mg Alloy in Dry Atmospheres of N2, CO2, and O2 and Humid Atmosphere of Ar

Lapointe

Bao

Kvithyld

2015

Metall Mater Trans B

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Reduction of Oxidative Melt Loss of Aluminum and Its Alloys

Cited by 3 publications

References 2 publications

STUDY OF OXIDATION KINETICS OF Al-Si ALLOYS WITH HIGH CONCENTRATION OF IMPURITIES (Fe, Zr, V)

STUDY OF OXIDATION KINETICS OF Al-Si ALLOYS WITH HIGH CONCENTRATION OF IMPURITIES (Fe, Zr, V)

Vapor-Phase Contribution to Laser-Induced Plasma Emission of Magnesium in Liquid Aluminum

Oxidation of Flash-Anodized Al-Mg Alloy in Dry Atmospheres of N2, CO2, and O2 and Humid Atmosphere of Ar

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