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International Journal of Corrosion
Volume 2014 (2014), Article ID 128720, 6 pages
http://dx.doi.org/10.1155/2014/128720
Research Article

Boric Acid as an Accelerator of Cerium Surface Treatment on Aluminum

Departamento de Ingeniería Metalúrgica, Edificio D Facultad de Química, Universidad Nacional Autónoma de México, Edificio D, Ciudad Universitaria, 04510 México, DF, Mexico

Received 12 October 2013; Accepted 4 December 2013; Published 16 January 2014

Academic Editor: Benjamin Valdez Salas

Copyright © 2014 K. Cruz-Hernández et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Aluminum pieces are often used in various industrial processes like automotive and aerospace manufacturing, as well as in ornamental applications, so it is necessary to develop processes to protect these materials, processes that can be industrialized to protect the aluminum as well or better than chromate treatments. The purpose of this research is to evaluate boric acid as an accelerator by optimizing its concentration in cerium conversion coatings (CeCC) with 10-minute immersion time with a concentration of 0.1 g L−1 over aluminum to protect it. The evaluation will be carried out by measuring anticorrosion properties with electrochemical techniques (polarization resistance, , polarization curves, PC, and electrochemical impedance spectroscopy, EIS) in NaCl 3.5% wt. aqueous solution and surface characterization with scanning electron microscopy (SEM).