Corrosion behaviour of copper containing low alloy steels in sulphuric acid

The Mechanism of Corrosion of Steel 304L in the Presence of Copper in Industrial Installations / Mechanizm Korozji Stali Austenitycznej 304L W Obecności Miedzi W Instalacjach Przemysłowych

“…As a result, corrosion pits with a very well developed characteristic surface form. There have been reports about the (disputable) influence of alloying austenitic steel with copper on the corrosion resistance of the former [10,11,12]. It has been found that during the corrosion of austenitic steel the ions passing into the corrosive solution can intensify the corrosion process.…”

“…6) and the microscopic scale ( Figs 7-10). Copper deposition on the surface of austenitic steel was also observed in [10,11,14]. Corroding copper sends its ions to the solution, which travel towards the steel surface and deposit on it as metallic copper.…”

“…Corroding copper sends its ions to the solution, which travel towards the steel surface and deposit on it as metallic copper. Numerous studies have shown that the copper ions in the corrosive solution can also come from the solubilisation of austenitic steel containing copper in its chemical composition [10,11,14]. The microscopic examinations showed that copper deposition occurred mainly on the surface damaged by corrosion around the sensitized points where the process of anodic solubilisation had begun in the corrosion-affected places, i.e.…”

Effect of Molybdenum on the Corrosion of Low Alloy Steels in Synthetic Seawater

“…It can be inferred from these data that the iron oxides such as FeO, FeOOH, Fe 2 O 3 and Fe 3 O 4 existed in rust layer for all of the specimens. 39,[49][50][51] Unlike the Fe peaks, the Mo peaks were only detected in the 0.2 mass% Mo steel noticeably. These results suggest that Mo compounds were suf ciently precipitated in the rust layer for 0.2 mass% Mo steel, which improved corrosion resistance of the steel effectively.…”

Corrosion Rate of Steels Dx51d and S220gd in Different Corrosion Environment

“…The large range of alloys available has been developed as much for mechanical and physical properties as for corrosion characteristics [1 -4]. Carbon steels generally presents surface defects, such as grain boundaries and inclusions, which are the preferred sites for the initiation of pitting corrosion [5,6]. Galvanized steel is widely employed in numerous engineering applications due to its resistance to corrosion.…”