Electrodeposition of aluminium-titanium alloys from molten fluoride-oxide electrolytes

Omar Awayssa; Gudrun Saevarsdottir; Rauan Meirbekova; Geir Martin Haarberg

doi:10.1016/j.elecom.2021.106919

Electrodeposition of aluminium-titanium alloys from molten fluoride-oxide electrolytes

Omar Awayssa, Gudrun Saevarsdottir, Rauan Meirbekova, Geir Martin Haarberg

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

This study reports the direct production of an aluminium-titanium alloy during aluminium electrolysis in fluoride-based melts. Experiments were conducted in a laboratory cell dedicated to current efficiency measurements. The temperature was varied from 960 to 980 °C at a cathodic current density (CCD) of 0.9 A/cm² and a cryolite ratio (CR) of 2.2. The titanium content was up to 1.0 wt%. Titanium was added in the form of a TiO₂ precursor. Bath samples were collected regularly and analyzed with ICP-MS to observe the decay of titanium during electrolysis. The current efficiency for electrodeposition of Al–Ti alloys was estimated to be at least around 90%. The surface of the solidified metal deposits was mostly flat, but some deposits were partially deformed.

Original language	English
Article number	106919
Journal	Electrochemistry Communications
Volume	123
DOIs	https://doi.org/10.1016/j.elecom.2021.106919
Publication status	Published - Feb 2021
Externally published	Yes

Keywords

Aluminium
Aluminium-titanium alloys
Current efficiency
Electrodeposition
Titanium

ASJC Scopus subject areas

Electrochemistry

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10.1016/j.elecom.2021.106919

Cite this

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title = "Electrodeposition of aluminium-titanium alloys from molten fluoride-oxide electrolytes",

abstract = "This study reports the direct production of an aluminium-titanium alloy during aluminium electrolysis in fluoride-based melts. Experiments were conducted in a laboratory cell dedicated to current efficiency measurements. The temperature was varied from 960 to 980 °C at a cathodic current density (CCD) of 0.9 A/cm2 and a cryolite ratio (CR) of 2.2. The titanium content was up to 1.0 wt%. Titanium was added in the form of a TiO2 precursor. Bath samples were collected regularly and analyzed with ICP-MS to observe the decay of titanium during electrolysis. The current efficiency for electrodeposition of Al–Ti alloys was estimated to be at least around 90%. The surface of the solidified metal deposits was mostly flat, but some deposits were partially deformed.",

keywords = "Aluminium, Aluminium-titanium alloys, Current efficiency, Electrodeposition, Titanium",

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T1 - Electrodeposition of aluminium-titanium alloys from molten fluoride-oxide electrolytes

AU - Awayssa, Omar

AU - Saevarsdottir, Gudrun

AU - Meirbekova, Rauan

AU - Haarberg, Geir Martin

PY - 2021/2

Y1 - 2021/2

N2 - This study reports the direct production of an aluminium-titanium alloy during aluminium electrolysis in fluoride-based melts. Experiments were conducted in a laboratory cell dedicated to current efficiency measurements. The temperature was varied from 960 to 980 °C at a cathodic current density (CCD) of 0.9 A/cm2 and a cryolite ratio (CR) of 2.2. The titanium content was up to 1.0 wt%. Titanium was added in the form of a TiO2 precursor. Bath samples were collected regularly and analyzed with ICP-MS to observe the decay of titanium during electrolysis. The current efficiency for electrodeposition of Al–Ti alloys was estimated to be at least around 90%. The surface of the solidified metal deposits was mostly flat, but some deposits were partially deformed.

AB - This study reports the direct production of an aluminium-titanium alloy during aluminium electrolysis in fluoride-based melts. Experiments were conducted in a laboratory cell dedicated to current efficiency measurements. The temperature was varied from 960 to 980 °C at a cathodic current density (CCD) of 0.9 A/cm2 and a cryolite ratio (CR) of 2.2. The titanium content was up to 1.0 wt%. Titanium was added in the form of a TiO2 precursor. Bath samples were collected regularly and analyzed with ICP-MS to observe the decay of titanium during electrolysis. The current efficiency for electrodeposition of Al–Ti alloys was estimated to be at least around 90%. The surface of the solidified metal deposits was mostly flat, but some deposits were partially deformed.

KW - Aluminium

KW - Aluminium-titanium alloys

KW - Current efficiency

KW - Electrodeposition

KW - Titanium

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Electrodeposition of aluminium-titanium alloys from molten fluoride-oxide electrolytes

Abstract

Keywords

ASJC Scopus subject areas

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