Film-forming corrosion inhibitors are complex mixtures of organic and inorganic molecules, designed to absorb onto metal or oxide surfaces in order to protect them from corrosion attacks. Recently, there has been increasing interest in the use of inhibitors as a preventive measure or as a restoration technique for reinforced concrete structures since this technology could provide an economical protection method. While inhibitor performance can be assessed by suitable corrosion tests in the laboratory or on site, few techniques are available to probe the protected surface directly. In this work, x-ray photoelectron spectroscopy (XPS) and Time-of-Flight SIMS (ToF-SIMS) have been used to study the interaction of a commercial corrosion inhibitor blend of unknown composition with clean gold and iron surfaces and with iron after immersion in alkaline solutions.
XPS study on the adsorption of inhibitor on iron in alcaline solutions
ROSSI, ANTONELLA;ELSENER, BERNHARD;
1996-01-01
Abstract
Film-forming corrosion inhibitors are complex mixtures of organic and inorganic molecules, designed to absorb onto metal or oxide surfaces in order to protect them from corrosion attacks. Recently, there has been increasing interest in the use of inhibitors as a preventive measure or as a restoration technique for reinforced concrete structures since this technology could provide an economical protection method. While inhibitor performance can be assessed by suitable corrosion tests in the laboratory or on site, few techniques are available to probe the protected surface directly. In this work, x-ray photoelectron spectroscopy (XPS) and Time-of-Flight SIMS (ToF-SIMS) have been used to study the interaction of a commercial corrosion inhibitor blend of unknown composition with clean gold and iron surfaces and with iron after immersion in alkaline solutions.
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