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

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

Research output: Contribution to journalArticlepeer-review

7 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 languageEnglish
Article number106919
JournalElectrochemistry Communications
Volume123
DOIs
Publication statusPublished - Feb 2021
Externally publishedYes

Keywords

  • Aluminium
  • Aluminium-titanium alloys
  • Current efficiency
  • Electrodeposition
  • Titanium

ASJC Scopus subject areas

  • Electrochemistry

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