Next Article in Journal
Optical Spectra Tuning of All-Glass Photonic Bandgap Fiber Infiltrated with Silver Fast-Ion-Conducting Glasses
Next Article in Special Issue
A Corrosion Sensor for Monitoring the Early-Stage Environmental Corrosion of A36 Carbon Steel
Previous Article in Journal
High Power Spark Delivery System Using Hollow Core Kagome Lattice Fibers
Previous Article in Special Issue
Effect of Secondary Phase Precipitation on the Corrosion Behavior of Duplex Stainless Steels
Article Menu

Export Article

Open AccessArticle
Materials 2014, 7(8), 5711-5734;

The Inhibition of Aluminum Corrosion in Sulfuric Acid by Poly(1-vinyl-3-alkyl-imidazolium Hexafluorophosphate)

Instituto Politécnico Nacional, ESIQIE, Departamento de Metalurgia y Materiales, Av. Instituto Politécnico Nacional S/N, Col. Lindavista, México D.F. 07300, Mexico
Facultad de Ingeniería Química, Benemérita Universidad Autónoma de Puebla, Av. San Claudio, Ciudad Universitaria. Col. San Manuel, Puebla, Puebla 72570, Mexico
Instituto Mexicano del Petróleo, Programa de Investigación y Posgrado, Eje Central Lázaro Cárdenas No. 152, Col. San Bartolo Atepehuacán, México D.F. 07730, Mexico
Instituto Politécnico Nacional, CIITEC, Cerrada Cecati S/N, Colonia Santa Catarina, Azcapotzalco, México D.F. 02250, Mexico
Author to whom correspondence should be addressed.
Received: 8 May 2014 / Revised: 23 July 2014 / Accepted: 29 July 2014 / Published: 7 August 2014
(This article belongs to the Special Issue Corrosion of Materials)
Full-Text   |   PDF [6926 KB, uploaded 7 August 2014]   |  


Compounds of poly(ionic liquid)s (PILs), derived from imidazole with different alkylic chain lengths located in the third position of the imidazolium ring (poly(1-vinyl-3-dodecyl-imidazolium) (PImC12), poly(1-vinyl-3-octylimidazolium) (PImC8) and poly(1-vinyl-3-butylimidazolium) (PImC4) hexafluorophosphate) were synthesized. These compounds were tested as corrosion inhibitors on aluminum alloy AA6061 in diluted sulfuric acid (0.1–1 M H2SO4) by weight loss tests, polarization resistance measurements and inductively coupled plasma optical emission spectroscopy. Langmuir’s isotherms suggested film formation on bare alloy while standard free energy indicated inhibition by a physisorption process. However, compound efficiencies as inhibitors ranked low (PImC12 > PImC8 > PImC4) to reach 61% for PImC12 in highly diluted acidic solution. Apparently, the high mobility of sulfates favored their adsorption in comparison to PILs. The surface film displayed general corrosion, and pitting occurred as a consequence of PILs’ partial inhibition along with a continuous dissolution of defective patchy film on formation. A slight improvement in efficiency was displayed by compounds having high molecular weight and a long alkyl chain, as a consequence of steric hindrance and PIL interactions. View Full-Text
Keywords: alloys; surfaces; corrosion test; electrochemical techniques; adsorption alloys; surfaces; corrosion test; electrochemical techniques; adsorption

Figure 1

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Arellanes-Lozada, P.; Olivares-Xometl, O.; Guzmán-Lucero, D.; Likhanova, N.V.; Domínguez-Aguilar, M.A.; Lijanova, I.V.; Arce-Estrada, E. The Inhibition of Aluminum Corrosion in Sulfuric Acid by Poly(1-vinyl-3-alkyl-imidazolium Hexafluorophosphate). Materials 2014, 7, 5711-5734.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top