Nontoxic corrosion inhibitors for N80 steel in hydrochloric acid

Synthesized amino acid compounds as eco-friendly corrosion inhibitors for mild steel in hydrochloric acid solution: electrochemical and quantum studies

“…In continuation of our research for developing eco-friendly corrosion inhibitors [1][2][3] with high effectiveness and efficiency, the present paper explores a systematic study to ascertain the inhibitive action of synthesized amino acid compounds, namely, OYAA and OYPA on corrosion of mild steel in 15-% HCl solution by using potentiodynamic polarization, electrochemical impedance spectroscopy and quantum chemical calculations.…”

“…The selection of an inhibitor is controlled by its economic availability, its efficiency in inhibiting the substrate material, and its environmental side effects. Most corrosion inhibitors for mild steel in acidic medium are organic compounds containing nitrogen, oxygen and/or sulfur [1][2][3][4][5][6]. The inhibiting action of these compounds is due to the adsorption of these compounds to the metal/solution interface, the process of which depends upon the nature and surface charge of the metal, the type of aggressive media, the structure of the inhibitor and the nature of its interaction with the metal surface [7].…”

Synthesis and Study of Good’s Buffer Ionic Liquid as Corrosion Inhibitor for Carbon Steel in Acidic Medium

“…Fig 3a reveals the steel surface after a 24 h immersion in uninhibited 1 M HCl. Aggressive attack and damage with a great deal of deep cavities were found [23]. Fig 3b-d, present the images of the iron sheet covered by HEPES buffer film after immersion in different concentrations of buffer only solutions in acidic medium.…”

“…It is worth to mention that good inhibition efficiency is obtained even at lowest concentration (200 ppm). The inhibition efficiency increases with increase in ionic liquid inhibitor concentration indicating decrease in metal dissolution rate [12], [23].…”

Activation Parameters and Adsorption Behavior of 1-Isonicotinoyl-4-Pyridin-2-Yl Piperazine on Mild Steel in Acid Environment

“…The practice of inhibition is commonly used to reduce the corrosive attack on metallic materials. Most corrosion inhibitors for mild steel in acidic medium are organic compounds containing nitrogen, oxygen and/or sulfur [2][3][4][5] . In many cases, organic inhibitors (chemically synthesized) were found very efficient but its toxicity and synthesis cost motivated people to develop environment friendly and cheap inhibitors.…”