Corrosion Mechanism in Artificial Sweat Solution of In-Bearing White Bronze Alloy

Abstract

Corrosion properties of thin layers of a copper-tin-zinc-indium alloy ("white bronze") were investigated in an artificial sweat solution indicating poor resistance properties. The coating degraded via pitting, generalized, and crevice corrosion, as evidenced by scanning electron microscopy-energy-dispersive x-ray analysis (SEM-EDX) investigation. The corrosion mechanism was investigated in situ by means of electrochemical impedance spectroscopy (EIS), and ex situ by x-ray photoelectron spectroscopy (XPS). These combined results demonstrate that the key point of the corrosion failure is the removal of the passive In-Sn oxides.

Electrochemiluminescent sensors as a screening strategy for psychoactive substances within biological matrices

“…Artificial sweat was prepared following the ISO 3610-2 guidance. 25,26 Artificial saliva and synthetic urine were commercially purchased and spiked with scopolamine as required.…”

Electrochemical Behaviour of an Au-Ge Alloy in an Artificial Saliva and Sweat Solution

“…For a long time, nickel-based alloys have been used widely for the above purposes, but it is well known that nickel ions, which are formed through electrochemical corrosion under the influence of human sweat, can cause a strong allergic reaction in a high percentage of the population [3,4]. Consequently, many studies have been conducted so far with the aim of achieving an economically affordable and sustainable alternative to the conventional nickel alloy.…”