The inhibition action of heterocyclic nitrogen organic compounds on Fe and steel in HCl media

Inhibitive action of gramine towards corrosion of mild steel in deaerated 1.0M hydrochloric acid solutions

“…Because of the general aggressiveness of acid solutions, organic inhibitors are commonly used to reduce the corrosion attack on metallic materials [1]. Among the inhibitors which are effective in acid solutions there are nitrogen containing compounds such as derivatives of amines [2][3][4] pyridazine [5], quinoline and pyridine [6], pyrazole [7,8], pyrazine [9], acridine [10], benzimidazole [11][12][13] and triazole [14][15][16][17][18][19]. Previous studies have shown that indole and some its derivatives display good inhibiting effects on steel and copper corrosion in acid solutions [20][21][22][23][24][25][26][27][28].…”

Pitting Corrosion Resistance and Inhibition of Lean Austenitic Stainless Steel Alloys

“…The most common method of which is the use of chemical compounds to modify the environment during application [63][64][65][66][67]. Studies have shown that inhibitor adsorption on metallic surface depends on the physicochemical characteristics of inhibitor molecule such as functional groups, steric factors, aromaticity, electron density of the donor atoms, π-orbital character of donating electrons, polymerization resulting in formation of protective film and the electronic structure of the molecules [68,69]. Most of the well-known corrosion inhibitors are organic compounds containing functional groups of heteroatoms capable of chemically reacting through adsorption with valence electrons of stainless steel surfaces at the metal solution interface [70,71].…”

Inhibitor action of ascorbic acid on the corrosion of copper in alkaline medium

“…Metal yüzeyine adsorplanan inhibitör moleküllerinin oluşturduğu tabaka, metalin çözeltiyle etkileşimini azaltması sonucu korozyon hızının azalmasına neden olmaktadır. Bakır için inhibisyon etkinliği derişimin azalmasıyla artmaktadır [10], [11].…”