Erosion–Corrosion Effect on the Alloy 316L in Polluted Phosphoric Acid

Skal, S.; Kerroum, Y.; Guenbour, A.; Bellaouchou, A.; Boulif, Rachid; Idrissi, Hassane; Garcı́a-Antón, J.; Zarrouk, A.

doi:10.1007/s40735-019-0270-4

Cited by 7 publications

(1 citation statement)

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“…Cependant, cette passivité peut être profondément modifiée par l'action électrochimique, mécanique ou physique. Spécifiquement sous l'action de l'effet d'abrasion qui peut conduire à une destruction mécanique partielle ou totale du film passif [5]. Pour la protection contre la corrosion-abrasion, il est possible d'agir sur le matériau lui-même, sur la surface du matériau ou par modification de l'environnement (inhibiteurs de corrosion).…”

Section: Introductionunclassified

Corrosion inhibition of austenitic stainless steel by clay in polluted phosphoric acid with presence of SiC abrasif

Skal¹,

Kerroum²,

Aoufir³

et al. 2018

MATEC Web Conf.

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Stainless steels have many properties mechanical and chemical resistances resulting from the formation of the protective layer (passive film) on their surface which prevents the metal to react with corrosive environments such as, phosphoric acid. This acid contains various impurities, including agressive agents and solid particles of gypsum, increase the risk of corrosion damage depending on the type of stainless steel used. In addition, it has been show that abrasion-corrosion causes an acceleration electrochemical process leading to a decrease in the resistance of materials. This work is to find a solution through an ecological inhibitor. That why we have been studied the effect of crude clay on corrosion behavior of Alloy 31 in polluted phosphoric acid with abrasive by electrochemical impedance spectroscopy (EIS) . The clay was characterized by X-ray fluorescence spectroscopy (FX), X-ray diffraction (DRX) and infrared spectroscopy (IR). EIS exhibited that resistance of Alloy 31 increased with increase the concentration of inhibitor.

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Section: Introductionunclassified