Corrosion Resistance of Heat-Treated NST 37-2 Steel in Hydrochloric Acid Solution

Abstract

Corrosion of metal components constitutes a major challenge in many engineering systems, with appropriate design, proper material selection, and heat treatment as commonly used control strategies. In this study, the corrosion behaviour of heat-treated (annealed, normalised, hardened, and tempered) NST 37-2 steel in three concentrations (1.0, 1.5 and 2.0 M) of hydrochloric acid solution was investigated using weight loss and electrode-potential methods. Results showed that corrosion rate increased with increase in acid concentration. The decreasing order of corrosion resistance was Tempered > Annealed > Normalised > Hardened > Untreated. The surface pictures of the heat-treated and untreated samples showed uniform and pitting corrosion with the latter becoming more pronounced as concentration increased.

Study of the Electrochemical Behavior of Concrete‐Coated Steel in 1 M Sulfuric Acid Using an Extract of Diplotaxis simplex L.

“…[13][14][15][16] For stainless steel, promising outcomes have been achieved with extracts from Salvia officinalis leaves and khillah. [17,18] These plant-based solutions are not only costeffective and readily available but also renewable. [19,20] In the pursuit of novel eco-friendly corrosion inhibition strategies, this study investigates the potential of (DS) plant extract as a corrosion inhibitor for concrete steel exposed to a highly corrosive 1 M H 2 SO 4 environment.…”

“…Studies have revealed the remarkable corrosion inhibition potential of extracts from sources such as coffee, garlic husks, fruit peels, Ilex paraguariensis, and Poinciana pulcherrima, particularly against HCl‐induced corrosion in carbon steel [13–16] . For stainless steel, promising outcomes have been achieved with extracts from Salvia officinalis leaves and khillah [17,18] . These plant‐based solutions are not only cost‐effective and readily available but also renewable [19,20] …”

Evolution of Microstructure and Wear Resistance of Carburized Low Carbon Steel

“…Demirkol et al [11] investigated the case depth of carburized steel on fatigue performance. T. G. Fadara et al [12] observed the corrosion resistance of carburized steel in hydrochloric acid services. The works carried out by researchers in the past are effective.…”

Corrosion Resistance Study of Heat Treated 420 Martensitic Stainless Steel and 316 Austenitic Stainless Steel in Dilute Acid Concentrations

“…Their resistance is determined by their passivation characteristics, elemental composition, heat treatment and the corrosive medium. The durability of the protective covering on stainless steels is subject to its self-healing ability (Fadare and Fadara, 2013;Kempester, 1984). The film collapses when the rate of corrosion is much faster than the reforming rate leading to severe localized corrosion attack and eventually catastrophic failures.…”