Surface and electrochemical characterization of pitting corrosion behaviour of 304 stainless steel in ground water media

Abstract

The effectiveness of aminotrimethylidene phosphonic acid (ATMP) as a corrosion inhibitor in association with a bivalent cation like Zn 2+ and nonionic surfactant like polyoxyethylene sorbitan monooleate (Tween 80) were investigated by measuring corrosion losses using electrochemical techniques. The corrosion of 304 stainless steel in the ground water medium was inhibited by complexation of the inhibitor. A combined inhibition effect was achieved by adding both ATMP and Zn 2+ along with Tween 80. The formulation functioned as a mixed type inhibitor. The synergistic effect of the inhibitor compound is calculated. Luminescence spectra, FTIR spectra, XRD, XPS and scanning electron microscopic studies were carried out to understand the mode of corrosion inhibition and also the morphological changes on the metal surface.

Inhibition of corrosion of carbon steel in well water by arginine-Zn2+ system

“…This helps to understand the nature of the surface film in the absence and presence of inhibitors and the extent of corrosion of carbon steel. The SEM micrographs of the surface are examined [54][55][56]. The SEM images of different magnification (500 x, 1000 x) of carbon steel specimen immersed in well water for 7 days in the absence and presence of inhibitor system are shown in Figs.…”

“…8c indicate that in the presence of inhibitor (250 ppm DL-arginine and 5 ppm Zn 2+ ) the rate of corrosion is suppressed, as can be seen from the decrease of corroded areas. The metal surface is almost free from corrosion due to the formation of an insoluble complex on the surface of the metal [54]. In the presence of DL-arginine and Zn 2+ , the surface is covered by a thin layer of inhibitors which effectively controls the dissolution of carbon steel.…”

Inhibition Effect of Copper Complex of 1-(8-Hydroxy Quinolin-2-yl- Methyl) Thiourea on the Corrosion of Mild Steel in Sodium Chloride Solution

“…The FTIR spectra have been used to analyze the film formed on the mild steel surface [25][26][27]. The FTIR spectrum (KBr) of pure Cu-HTF is shown in Fig.…”

Effect Formazan of Benzaldehyde as Corrosion Inhibitor on Preventing the Mild Steel Corrosion in Acidic Medium

“…However, the use of organic inhibitors in acid solutions leads to prevent corrosion resistance [10][11][12][13][14] . Organic compounds containing Oxygen, Nitrogen, Sulphur and tiple bonds have been reported as good corrosion inhibitors [15][16] . Many nitro and nitroso have been tried as corrosion inhibitors 17 .…”