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XPS characterization of new corrosion inhibitor: zinc aminophosphonate coordination complex
Author(s) -
Shabanova I. N.,
Chausov F. F.,
Naimushina E. A.,
Somov N. V.
Publication year - 2014
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5479
Subject(s) - x ray photoelectron spectroscopy , corrosion , zinc , chemistry , thermal stability , metal , covalent bond , chelation , corrosion inhibitor , carbon steel , inorganic chemistry , chemical state , nuclear chemistry , chemical engineering , organic chemistry , engineering
A new zinc aminophosphonate corrosion inhibitor (Zn ATMP ) containing the Zn–N bond in the coordination environment of zinc has been synthesized, separated and studied. The inhibition coefficient according to the all‐Union State Standard 9.502 is 14.7. The interaction of the metal‐coordination corrosion inhibitor Zn ATMP with the surface of carbon steel has been studied by X‐ray photoelectron spectroscopy. The structure of the protective layer, its stability in the temperature range of 300–575 K and the mechanism of thermal destruction have been investigated. It is shown that the interaction of the nitrogen‐containing chelate corrosion inhibitor with the steel surface leads to the formation of the surface protective layer, the atoms of which form strong covalent bonds Fe–O–P–Zn–N(C). Fe atoms pass into a high‐spin state. Thermal action on the protective film results in its destruction at 575 K. Copyright © 2014 John Wiley & Sons, Ltd.