The cathodic oxygen reduction kinetics of the freshly polished and the pre-oxidized nickel–aluminum bronze surfaces were investigated in a 3.5 wt.% NaCl solution under steady-state and well-defined hydrodynamic conditions using a rotating disc electrode setup. The diffusion coefficient of the pre-oxidized film specimen of 0.72 × 10−5 cm2 s−1 was lower than that of the freshly polished surface of 2.55 × 10−5 cm2 s−1, a 3.5-fold decrease, demonstrating the extent to which the oxygen diffusion within the pre-oxidized film was hindered.

Original languageEnglish
Pages (from-to)1218-1232
Number of pages15
JournalAnalytical Letters
Issue number8
Publication statusPublished - 23 May 2020


  • Nickel–aluminum bronze
  • oxide film
  • oxygen reduction kinetics
  • pre-oxidized film
  • rotating disc electrode


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