2 research outputs found
Use of Extracted Green Inhibitors as a Friendly Choice in Corrosion Protection of Low Alloy Carbon Steel
Mitigation of corrosion impact on environment is an important step in environmental protection. Use of environmentally friendly corrosion protection methods is very important. It is smart to choose cheap and safe to handle compounds as corrosion inhibitors. The use of green inhibitors (extracted inexpensively, from the seed endosperm of some Leguminosae plants), and investigation of their efficiency in corrosion protection is the aim of this study. As green inhibitor one kind of polysaccharides (galactomannan) from locust bean gum (also known as carob gum, carob bean gum) extracted from the seed of carob tree is used. Corrosion protection efficiency of these extracted green inhibitors was tested for carbon steel marked as: steel 39, steel 44, and iron B 500 (usually applied as reinforcing bars to concrete). Sulfuric acid solution in the presence of chloride ions was used as corrosion media. The composition of corrosion acid media used was 1 mol L<sup>-1</sup> H<sub>2</sub>SO<sub>4</sub> and 10<sup>-3</sup> mol L<sup>-1</sup> Cl<sup>-</sup> (in the form of NaCl). Electrochemical techniques such as potentiodynamic polarization methods were used for inhibitor efficiency testing
Primjena ekstrahiranih "zelenih" inhibitora pri zaÅ”titi niskolegiranih ugljiÄnih Äelika od korozije
Mitigation of corrosion impact on environment is an important step in environmental protection. Use of environmentally friendly corrosion protection methods is very important. It is smart to choose cheap and safe to handle compounds as corrosion inhibitors. The use of green inhibitors (extracted inexpensively, from the seed endosperm of some Leguminosae plants), and investigation of their efficiency in corrosion protection is the aim of this study. As green inhibitor one kind of polysaccharides (galactomannan) from locust bean gum (also known as carob gum, carob bean gum) extracted from the seed of carob tree is used. Corrosion protection efficiency of these extracted green inhibitors was tested for carbon steel marked as: steel 39, steel 44, and iron B 500 (usually applied as reinforcing bars to concrete). Sulfuric acid solution in the presence of chloride ions was used as corrosion media. The composition of corrosion acid media used was 1 mol Lā1 H2SO4 and 10ā3 mol Lā1 Clā (in the form of NaCl). Electrochemical techniques such as potentiodynamic polarization methods were used for inhibitor efficiency testing.Ublažavanje utjecaja korozije na okoliÅ” važan je korak u oÄuvanju okoliÅ”a, Posebno se istiÄu metode zaÅ”tite od korozije prihvatljive za okoliÅ”. Treba upotrebljavati jeftine i okoliÅ”u prijateljske korozijske inhibitore. To su tzv. zeleni inhibitori. U ovom radu istraživan je inhibitor dobiven iz endosperma sjemena rogaÄa (karuba guma). Djelotvornost u zaÅ”titi od korozije ispitivana je na ugljiÄnim Äelicima (Äelik 39 i Äelik 44) te željezu B 500. Korozijski medij bio je otopina sumporne kiseline, c(H2SO4) = 1 mol L-1, Äista i uz dodatak i kloridnih iona c(NaCl) = 10-3 mol L-1. Primijenjena je elektrokemijska metoda potenciodinamiÄke polarizacije