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Inhibition of Metallic corrosion in an acid medium by means of phosphonium salts: Zinc and iron
Author(s) -
Troquet M.,
Pagetti J.
Publication year - 1983
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.19830341105
Subject(s) - phosphonium , zinc , steric effects , chemistry , metal , electrochemistry , corrosion , inorganic chemistry , stereochemistry , organic chemistry , electrode
Experimental results evidenced the chemical structure of phosphonium salts to be essential in the process of corrosion inhibition for zinc and iron metals in the presence of Ph 4−y P + Ry, X − compounds (0 ≤ y ≤ 4) in an acid medium. Several steps are involved in a complex mechanism, each of which being enhanced or strongly reduced by altering the substitutions of the phosphorus atom. Aromaticity and steric hindrance of the radicals are prevailing factors. The inhibition efficiency structure correlation is based on an analytical and electrochemical study of the inhibition process.