Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Corrosion mechanism of a new-type low-alloy corrosion resistant steel containing Sb used in acid environment

Corrosion mechanism of a new-type low-alloy corrosion resistant steel containing Sb used in acid... This study aims to develops a new-type low-alloy corrosion resistant steel containing Sb and investigate the corrosion mechanism of this new-type low-alloy steel.Design/methodology/approachEnergy dispersive spectrometer, X-ray photoelectron spectroscopy, X-Ray diffraction and scanning electron microscopy were used to evaluate the corrosion resistance of the rust layers formed on these samples. Laser confocal microscopy was used to observe the corroded surfaces of the steels.FindingsResults showed that Sb added can consume H+ in the solution, thereby preventing the oxygen reaction to slow down the corrosion rate. Meanwhile, a stable and insoluble substance (Sb2O3) in the acidic solution would be produced when the reaction of the product of Sb and H+ with the enough dissolved oxygen in the solution. Due to the precipitation of Sb2O3 and iron oxyhydroxides, the rust layer of Sb-containing steel became more uniform and compact, which resulted in better corrosion resistance in acid environment.Originality/valueIn this study, a new-type acid resistant low-alloy steel containing Sb was developed. Compared with the results, the corrosion mechanism of the new-type low-alloy steel in acid environment was discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Anti-Corrosion Methods and Materials Emerald Publishing

Corrosion mechanism of a new-type low-alloy corrosion resistant steel containing Sb used in acid environment

Loading next page...
 
/lp/emerald-publishing/corrosion-mechanism-of-a-new-type-low-alloy-corrosion-resistant-steel-vD05XgdKvG
Publisher
Emerald Publishing
Copyright
© Emerald Publishing Limited
ISSN
0003-5599
DOI
10.1108/acmm-09-2020-2378
Publisher site
See Article on Publisher Site

Abstract

This study aims to develops a new-type low-alloy corrosion resistant steel containing Sb and investigate the corrosion mechanism of this new-type low-alloy steel.Design/methodology/approachEnergy dispersive spectrometer, X-ray photoelectron spectroscopy, X-Ray diffraction and scanning electron microscopy were used to evaluate the corrosion resistance of the rust layers formed on these samples. Laser confocal microscopy was used to observe the corroded surfaces of the steels.FindingsResults showed that Sb added can consume H+ in the solution, thereby preventing the oxygen reaction to slow down the corrosion rate. Meanwhile, a stable and insoluble substance (Sb2O3) in the acidic solution would be produced when the reaction of the product of Sb and H+ with the enough dissolved oxygen in the solution. Due to the precipitation of Sb2O3 and iron oxyhydroxides, the rust layer of Sb-containing steel became more uniform and compact, which resulted in better corrosion resistance in acid environment.Originality/valueIn this study, a new-type acid resistant low-alloy steel containing Sb was developed. Compared with the results, the corrosion mechanism of the new-type low-alloy steel in acid environment was discussed.

Journal

Anti-Corrosion Methods and MaterialsEmerald Publishing

Published: May 25, 2021

Keywords: Acid environment; Low-alloy steel; Antimony; Rust layer; LCM

References