Natural substances have been the subject of numerous research in biology and chemistry to determine their effects active in the medical field. Currently, the extracts of natural substances are other fields of application such as corrosion. Indeed, first interesting results were obtained with essential oils in the field of protection of materials and on the other hand, these inhibitors have been recognized as non-toxic and do not present a risk of pollution the environment. In previous work, we studied the effect of essential oil of Apium graveolens L. (celery) (recognized in the medical field by its analgesic, anti-inflammatory, anti-bacterial, antiseptic and antispasmodic) on corrosion of steel C35 in a 1 M HCL environment. The results obtained showed a very good improvement in the resistance of the alloy with respect to salt corrosion. With the objective of determining the most active component of the constituents of this oil, which contributes most to the inhibition of corrosion of this alloy, we conducted the celery extract from the oil of these grains. Thus, we investigated the effect of certain parameters (concentration, temperature and immersion time) on power celery inhibitor. This study was carried out using stationary and transient electrochemical methods. The results obtained show that, in the corrosive environment celery addition slows down the corrosion process and that the inhibitory efficiency is increasing with the concentration.
Mostaphi AE, Galai Mouhssine, Hartiti HE,Barrahi M, Mohamed Ebn Touhami, Bouchra Lakhrissi and Ouhssine M
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