Volatile inhibitors of atmospheric corrosion. IV. Evolution of vapor-phase protection in the light of patent literature

• N. N. Andreev, O. A. Goncharova and S. S. Vesely

A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119071 Russian Federation

Abstract: The review analyzes the patent literature dealing with metal protection by volatile corrosion inhibitors (VCIs) and materials based thereon. It has been found inhibitors of atmospheric corrosion with vapor pressure above 10^–5 mmHg can be used as VCIs, including nitrogen-containing bases of various nature, salts of nitrogen-containing bases with some inorganic or organic acids, organic nitro compounds, esters of organic and inorganic acids, heterocyclic nitrogen-containing compounds, etc. Vapor-phase metal protection is also performed using non-volatile compounds and formulations that can release compounds of the above types upon hydrolysis. VCIs for temporary protection can be used in the form of active compounds, solutions, packaging materials, porous emitters, inhibited air, or in special forms intended for the protection of specific product types. VCIs can be used for permanent protection of metal articles within polymer coatings (paints) and working liquids (hydraulic, cooling liquids, etc.).

Keywords: volatile corrosion inhibitors, patent literature, vapor-phase protection of metals

Int. J. Corros. Scale Inhib., 2013, 2, no. 3, 162-193 PDF (666 K)
doi: 10.17675/2305-6894-2013-2-3-162-193

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