Inhibition of acidic iron corrosion by. gamma. -irradiated 2-mercaptobenzimidazole

Journal Article · Thu Jan 01 04:00:00 EST 1987 · Prot. Met. (Engl. Transl.); (United States)

OSTI ID:6561160

Makovei, G L; Ushakov, V G; Bagin, V K; Shemshei, V P

The authors report on the corrosion inhibition of St 3 steel in hydrochloric acid by 2-mercaptobenzimidazole previously gamma-irradiated from a cobalt 60 source over an absorbed dose range of 0.25-50 MGy. The electrochemical corrosion characteristics of the steel inhibited by both irradiated and unirradiated quantities of the inhibitor were determined under controlled conditions. The possible effects of gamma radiation on the inhibitor molecules was explored by taking their ultraviolet and infrared spectra. The authors postulate that the gamma radiation can split the -SH group from the molecule to form free sulfur in the inhibitor solution and alter the inhibitor from the thiol to the thione form. The radiation-induced accumulation of the thione form, whose inhibitive action is due to highly negative pi-electron population density at the sulfur atom, gives the irradiated imidazole consistently good inhibitive properties.

• Research Organization: Kiev Polytechnic Institute, USSR
• OSTI ID: 6561160
• Journal Information: Prot. Met. (Engl. Transl.); (United States), Journal Name: Prot. Met. (Engl. Transl.); (United States) Vol. 22:3; ISSN PTNMA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600 -- Radiation Chemistry
ACTIVATION ENERGY
ALLOYS
AZOLES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON STEELS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
COBALT 60
COBALT ISOTOPES
CORROSION
CORROSION INHIBITORS
CORROSION PROTECTION
CORROSION RESISTANCE
CORROSIVE EFFECTS
DOSE-RESPONSE RELATIONSHIPS
ELECTROCHEMICAL CORROSION
ELECTROMAGNETIC RADIATION
ENERGY
GAMMA RADIATION
HETEROCYCLIC COMPOUNDS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
IMIDAZOLES
INFRARED SPECTRA
INORGANIC ACIDS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
IRON ALLOYS
IRON BASE ALLOYS
IRRADIATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KINETICS
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
POTENTIOMETRY
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOISOTOPES
REACTION KINETICS
SPECTRA
STEELS
THIOLS
TITRATION
ULTRAVIOLET SPECTRA
YEARS LIVING RADIOISOTOPES