THE INHIBITION MILD STEEL CORROSION IN PHOSPHORIC ACID SOLUTIONS BY 2- PHENYL-1-HYDRAZINE CARBOXAMIDE

dc.creatorDADGARINEZHAD,A
dc.creatorBAGHAEI,F
dc.date2009-01-01
dc.date.accessioned2017-03-07T16:18:58Z
dc.date.available2017-03-07T16:18:58Z
dc.identifierhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000300002
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/399480
dc.descriptionIn this work the effect of 2-phenyl-l-hydrazine carboxamide on the corrosion of mild steel in solutions of phosphoric acid (H3PO4 has been investigated in relation to the concentration of the inhibitor and acid, by weight loss, potentiodynamic polarization, and AC impedance (EIS) measurements. Results obtained revealed that this compound is a good mixed -type inhibitor. Increasing the acid concentration increased the metal corrosion but did not affect on the inhibitor efficiency. The optimum inhibitor concentration remained 150 ppm for various concentration of H3PO4. The surface morphologies of specimens after 1 hour of immersion in various solutions were studied by scanning electron microscopy (SEM).The Langmuir adsorption isotherm fitted well with the experimental data.
dc.formattext/html
dc.languageen
dc.publisherSociedad Chilena de Química
dc.sourceJournal of the Chilean Chemical Society v.54 n.3 2009
dc.subjectPotentiodynamic
dc.subjectEIS
dc.subjectInhibitor
dc.subjectSEM
dc.subjectCorrosion
dc.titleTHE INHIBITION MILD STEEL CORROSION IN PHOSPHORIC ACID SOLUTIONS BY 2- PHENYL-1-HYDRAZINE CARBOXAMIDE
dc.typeArtículos de revistas


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