Details

Autor(en) / Beteiligte

• Karthika, B.
• Mohan, S.
• Bera, Anuradha
• Rajasekaran, N.

Titel

Structure, microstructure and electrodeposition behaviours of aluminium from AlCl3-EMIC and AlCl3-BMIC ionic liquid electrolytes - a comparative study

Ist Teil von

• Surface engineering, 2020-09, Vol.36 (9), p.1012-1021

Ort / Verlag

London, England: Taylor & Francis

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Electrodeposition of aluminium on the copper substrate using two different chloroaluminate ionic liquid electrolytes such as AlCl 3 /1-Butyl-3-methylimidazolium chloride electrolyte (AlCl 3 -BMIC) and AlCl 3 /1-Ethyl-3-methylimidazolium chloride electrolyte (AlCl 3 -EMIC) were studied. Cyclic voltammetry studies reveal the aluminium deposition process follows two steps mechanism in AlCl 3 -EMIC electrolytes and in AlCl 3 -BMIC electrolytes, it follows single-step mechanism. The AlCl 3 -EMIC electrolytes permit wide deposition current density window than the AlCl 3 -BMIC electrolytes for aluminium deposition with good properties. The aluminium deposits obtained from AlCl3-EMIC electrolyte have better surface properties than the deposits obtained from AlCl 3 -BMIC electrolyte. Detailed comparative studies of deposits obtained from these two electrolytes with respect to deposition mechanism, deposition efficiency and deposition current density window were done. The deposit properties such as surface morphology, microstructure and crystal structures were also compared. From this study, we observed the AlCl 3 -EMIC electrolyte gives good quality deposits than AlCl 3 -BMIC electrolyte.