Abstract

FAYOMI, O. S. I.; OLAWUNI, A. E.  and  AKANDE, I. G.. Studies on Phosphorus-Aluminum Oxide Coating Effects on Mild Steel Microstructure, Corrosion and Mechanical Behavior. Port. Electrochim. Acta [online]. 2023, vol.41, n.4, pp.315-326.  Epub Aug 30, 2023. ISSN 0872-1904.  https://doi.org/10.4152/pea.2023410405.

The increasing challenge of components used for the development of new materials, in order to improve their mechanical performance, can never be over-emphasized. The present research of a produced P-Al2O3 coating grafted into a Zn electrolyte was done through the thin-film alloy ED on MS, in a time range from 15 to 30 min, pH 5 and T of 95±5 ºC. P-Al2O3 morphological properties were characterized by TESCAN SEM and elemental quantification with EDS. The deposited alloy strengthening and dislocation performance were studied using diamond-based Vickers ( test and a reciprocated wear slider, under a 5 N load. The pitting corrosion study was made using a PGStat101 auto lab potentiostat galvanostat, by LSV and OCP methods. The results show that P-Al2O3 is an active corrosion inhibitor and adsorption composite. The ED mass was obtained at a significant value of 0.1302 and 0.1567 g, at 25 and 30 min DT. At 30 min, wear loss and CR, along with the interfacial surfaces of this CC, were lower than those of other developed alloys, at 15 min, due to the progressive particulates loading effect. The average significant HVN trend was influenced by the particulates weight fraction precipitation. MS properties enhancement by P-Al2O3 indicated that the CC can be used for advanced industrial applications, especially in corrosive environments.

Keywords : adsorption; components; corrosion; MS, P-Al₂O₃; protection.

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