ABSTRACT
This chapter presents the evaluation of the performances of NaC10, HC10 and HC14 treatments on bare iron simulating iron artefact by electrochemical measurements. The anticorrosion performances of new non-toxic inhibitors based on carboxylic acids extracted from vegetable oil have been evaluated for the protection of iron artefacts. Despite the numerous corrosion inhibition investigations, relatively few works are directed towards the study of non-toxic organic compounds. The comparison with the spectrum of FeC10, previously synthesised, confirms that the passivation mechanism of iron coupon immersed in non-toxic inhibitive solutions is correlated to the precipitation of an insoluble Fe(III) carboxylate. The development of new protection systems, which can contribute to a decrease in the corrosion rate of metallic artefacts, is one of the main objectives of research in conservation. The more effective solution was tested on real artefacts belonging to the National Maritime Museum of Paris to evaluate their effectiveness in real conditions.
