Corrosion inhibition of mild steel in hydrochloric acid by some aromatic hydrazides

Authors
Quraishi, MA Sardar, R Jamal, D
Citation
Ma. Quraishi et al., Corrosion inhibition of mild steel in hydrochloric acid by some aromatic hydrazides, MATER CH PH, 71(3), 2001, pp. 309-313
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS CHEMISTRY AND PHYSICS
ISSN journal
02540584 → ACNP
Volume
71
Issue
3
Year of publication
2001
Pages
309 - 313
Database
ISI
SICI code
0254-0584(20010910)71:3<309:CIOMSI>2.0.ZU;2-Y
Abstract
The influence of some organic acid hydrazides, namely salicylic acid hydraz ide (SAH), anthranilic acid hydrazide (AAH), benzoic acid hydrazide (BAH) a nd cinnamic acid hydrazide (CAH) on the corrosion inhibition of mild steel in the presence of 1 N HCl was studied. The adsorption of all the hydrazide s on mild steel surface in the acid solution were found to obey Temkin's ad sorption isotherm. The values of activation energy and free energy of adsor ption of all the hydrazides were also calculated. The potentiodynamic polar ization studies indicated that all the hydrazides except SAH are mixed inhi bitors. (C) 2001 Elsevier Science B.V. All rights reserved.