Physicochemical Aspects of the Protection of Metals from Corrosion with the Use of Nano- and Microsize Coatings¹

Yu. I. Kuznetsov

Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 119991 Russia

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Received April 1, 2004

Abstract — The formation of thin protective layers at metals, which could be successfully used for corrosion control, has long been the focus of attention for physical chemists. Those layers are formed either during the adsorption of corrosion inhibitors (CIs) or in reactions of the cations of the metal to be protected with some components of the medium. The latter case involves not only nanosized layers formed by CIs but also thick conversion (oxide, phosphate, etc.) coatings. Let us restrict our consideration to conversion coatings (CCs) with a thickness of5 µm. Apparently, it is methods designed to form thin and ultrathin protective layers that will be in the best demand by the technologies of the XXI century. We will consider only a few important problems that physical chemists face with when studying the possibilities of the protection of metals from corrosion.