Effects of Nickel–Aluminum Bronze Pre-Oxidized Films on the Cathodic Kinetics of Oxygen Reduction. (23rd May 2020)

• Record Type: Journal Article
• Authors: Musabikha, Siti; Utama, I Ketut Aria Pria; Mukhtasor, ; Wharton, Julian A.; Wood, Robert J. K.
• Is Part Of: Analytical letters. Volume 53:Number 8(2020)
• Page Start: 1218
• Page End: 1232
• Publication Date: 2020-05-23
• Subjects: Nickel–aluminum bronze -- oxide film -- oxygen reduction kinetics -- pre-oxidized film -- rotating disc electrode; Chemistry, Analytic -- Periodicals; Chemistry, Analytic -- Abstracts; 543
• DOI: 10.1080/00032719.2019.1700515
• Languages: English
• ISSNs: 0003-2719

Abstract

Abstract: 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 cm 2 s −1 was lower than that of the freshly polished surface of 2.55 × 10 −5 cm 2 s −1, a 3.5-fold decrease, demonstrating the extent to which the oxygen diffusion within the pre-oxidized film was hindered.