Influence of the type of sintering on the corrosion performance of sol-gel coatings
Influencia del tipo de sinterizado en el comportamiento anticorrosivo de recubrimientos sol-gel
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This work shows a comparative electrochemical study among the anticorrosive properties of coatings SiO2 TiO2 ZrO2 obtained by the method sol-gel and plasma sintering process and conventional. The coatings conformed to starting from Si(OC2 H5 )4 , Ti(OBu)4 and Zr(OC3 H7 )4 . These were deposited on steel substrate 304 by means of dip-coating in mono-layer and bi-layer. The plasma sintering process was carried out to temperatures of the substrate of 250 ºC, 300 ºC and 330 ºC and the conventional to 400 ºC and a speed of heating of 2 ºC/min. the anticorrosive behavior was studied by means of the techniques of electrochemical impedance spectroscopy (EIS) and Tafel. It was observed that the plasma sintering process, it improves the resistance to the corrosive attack to in regard to the conventional method.
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C. J. Brinker, G. W. Scherer, “Sol-Gel Science: the physics and chemistry of solgel processing”; 1990, Academic Press, Inc.
L. L. Hech, “Science of Ceramic Chemical Processing”; 1986, John Wiley & Sons, Inc.
L. Klein, “Sol-gel technology for thin films, fibers, performs, electronics and specialty shapes, Noyes”; 1988. Park Ridge.
. J. Camargo, “Estudio del proceso de sinterización por plasma de recubrimientos cerámicos tipo SiO2 TiO2 ZrO2 obtenidos por el método sol-gel”, Monografía, Universidad Pedagógica y Tecnológica de Colombia. (2007)
. J. Livage, “Better Ceramic Through chemistry”; Material Research Society, Vol. 73 (1986), p 717-724.
W. C. La Course, S. Kirn, “Science of Ceramic Chemical Processing”; 1986, John Wiley and Sons, Inc.
F. Mansfeld, “Evaluation of corrosive degradation in coated steel using alternating current impedance spectroscopy”; Corros. Sci., Vol. 52 (6) (1996), p. 417.
M. Stratmann, K. Hoffmann, “Proceedings of the Ninth European Congress of Corrosion”, Utrecht, The Netherlands, p. CO-70 (1989).
L.F. Vesga, E Vera, J.H. Panqueva, “Use of the Electrochemical Impedance Spectroscopy to evaluate the performance of a primer applied under different surface preparation method”; Progress in Organic Coatings, Vol. 39 (2000), p. 61-65.
J. Bautista, “Producción y caracterización de películas cerámicas SiO2 TiO2 ZrO2 sintetizadas por el método Sol-gel para aplicaciones anticorrosivas”, Tesis de Maestría, Universidad Pedagógica y
Tecnológica de Colombia. (2006).
.J. Bautista, “Conformación de películas delgadas tipo sol-gel para aplicaciones anticorrosivas”; Colección Investigación Nº 20. UPTC, Tunja- Colombia, 2008.
