The Electrodeposition of Aluminum from Aromatic Hydrocarbon: I. Composition of Baths and the Effect of Additives

E. Peled, E. Gileadi

Research output: Contribution to journalArticlepeer-review

Abstract

Electroplating of aluminium on copper and steel substrates was conducted at room temperature. The bath consisted basically of A1Br3 and an alkali metal bromide such as KBr dissolved in a suitable mixture of aromatic hydrocarbons. The bath was operated under conditions resembling industrial operation. Oxygen and humidity were removed by bubbling nitrogen through the bath. The effect of bath composition on the quality of the plated product is discussed in detail. Transference numbers were measured. The aluminium is shown to be present in the form of a negative ion (Al2Br7-), the transference number of which is larger than that of the solvated positive ion. The reactions taking place during deposition and dissolution of aluminium in this system are discussed in detail.

Original languageEnglish
Pages (from-to)15-19
Number of pages5
JournalJournal of the Electrochemical Society
Volume123
Issue number1
DOIs
StatePublished - Jan 1976

Keywords

  • aluminum
  • aluminum bromide
  • aromatic hydrocarbons
  • electrodeposition
  • nonaqueous plating bath

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