Some new bipyrazole derivatives as corrosion inhibitors for C38 steel in acidic medium

Synthesis and characterization of new quinoxaline d erivatives of 8- hydroxyquinoline as corrosion inhibitors for mild s teel in 1.0 M HCl medium

“…The activation parameters (Table 7) such as the energy of activation (E a ), the enthalpy of activation (∆H a ), and the entropy of activation (∆S a ) were evaluated according to the Arrhenius law [47][48][49][50] and the alternative form of the Arrhenius equation (8,9):…”

“…Their selection depends on the type of acid, its concentration, the temperature and the metal material exposed to the action of the [7] acid solution. The injection of organic inhibitors to the aggressive medium has been proven to be an effective and practical way to reduce the corrosion process on metal [8][9][10][11][12][13][14]. Some heterocyclic compounds were found to be good corrosion inhibitors in deferent environments.…”

Inhibition Studies of Rosmarinus Officinalis on The Pitting Corrosion Resistance 439LL Ferritic Stainless Steel in Dilute Sulphuric Acid

“…The inhibition action is due to the presence of active organic components such as carnosol, carnosic acid, rosmadial, rosmanol, epirosmanol, and methyl carnosate 20 . Organic [21][22][23] . The adsorption of these compounds on the metal surface reduces the available area for the attack of aggressive ions such as SO 4 2-or Cl -.…”

Combined Quantum Mechanical and Electrochemical Study of New Isatin Derivative as Corrosion Inhibitor for Carbon Steel in 3.5 % NaCl

“…The majority of inhibitors used in the industry are organic compounds mainly consisting of nitrogen, oxygen and sulfur, as well as inhibitors that contain double or triple bonds facilitate the adsorption of these compounds on the metal surfaces [3]. Many scientists have reported that the mechanism of inhibition is mostly explained by certain physicochemical and electronic properties of the organic inhibitor such as steric effects, functional groups, the orbital nature of donating electrons, and the electron density of the donor atoms [4,5]. Isatin is an indole derivative which has been known since.…”