Morphological Aspects and Corrosion Behaviour of Phenol Formaldehyde/Zn Composite Coatings
Keywords:
PF resin/Zn composite coatings, electrodeposition, scanning electron microscopy, polarization resistance
Abstract
The present work has the purpose of studying morphological aspects and corrosion behaviour of pure zinc and composite coatings having zinc as metal matrix and phenol – formaldehyde resin type Novolac (RESITAL 6358/1) as dispersed phase obtained during the electrodeposition process of zinc. The phenol – formaldehyde resin/Zn composite coatings were electrodeposited from a suspension of phenol – formaldehyde resin particles in aqueous zinc sulphate electrolyte by adding 10g/L and 25g/L of phenol – formaldehyde resin particles in the electrolyte solution. The dimensions of resin particles were 0.1 - 5μm. The morphological aspects of the coatings were investigated by scanning electron microscopy method. While the pure zinc coatings have a rather regular surface, the composite coatings surfaces have finer grains and different morphologies. The electrochemical behaviour of the coatings in the corrosive solution was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy methods. As electrochemical test solution, 0.5M NaCl was used in a three electrode open cell. The polarization resistances of phenol – formaldehyde resin/Zn composite coatings are bigger than that of pure zinc coatings obtained under the same condition for electrodeposition.
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References
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[3]. Chawla K. K. - Composite Materials: Science and Engineering, 2 ed., Springer - Verlag, New York, 1998.
[4]. Kaczmar J. W., Pietrzak K., WlosinskiW. - The Production and Application of Metal Matrix Composites, Journal of Materials Processing Technology, Vol. 106, (l) ,2000, p. 58-67.
[5]. Lindroos V. K., Talvitie M. J. - Recent Advances in Metal Matrix Composites, Journal of Materials Processing Technology, Vol. 53. (1 - 2), 1995, p. 273-284.
[6]. Azizi M., Schneider W. and Plieth W. - Electrolytic codeposition of silicate and mica particles with zinc, Journal of Solid State Electrochemistry, Vol. 9, (6), 2005, p. 429-437.
[7]. Flinn R. A. and Trojan P. K. - Engineering Materials and Their Applications, 4th ed., Houghton Mitffllin Co., Boston. 1990.
[8]. Kim B. S., Sung R. J., Sekino T., Nakayama T., Kusunose T., Niihara K., Aqueous Suspicion Process of Multi - Dimensional Alumina/Nickel Nanocomposites, Advanced in Technology of Materials and Materials Processing Journal, Vol. 6, (2), 2004, p. 200-205.
[9]. Naik A. and Venkatesha T.V. - A new condensation product for zinc plating from non-cyanide alkaline bath, Bulletin of Materials Science, Vol.28, (5), 2005, p. 495-501.
[10]. Deflorian F., Fedrizzi L., Bonora P. L. - EIS study of organic coating on zinc surface pretreated with environmentally friendly products, Progress in Organic Coatings, Vol.52, (4), 2005, p. 271-279.
[11]. Chung S.C., Cheng J.R., Chiou S.D., Shih H. C. - EIS behavior of anodized zinc in chloride environments, Corrosion Science, Vol. 42, (7), 2000, p.1249-1268.
[12]. Monetta T., Belluci F., Nicodemo L. - Protective properties of epoxy-based organic coatings on mild steel, Progress in Organic Coatings, Vol. 21, (4), 1993, p. 353-369.
[13]. Sekine I. - Recent Evaluation of Corrosion Protective Paint Films by Electrochemical Methods, Progress in Organic Coatings, Vol. 31, (1), 1997, p. 73-80.
[14]. Miskovic V. B., Stanic M. R., Drazic D. M. - Corrosion protection of aluminium by a cataphoretic epoxy coatings, Progress in Organic Coatings, Vol. 36, (1), 1999, p. 53-63.
[15]. Nie T., Ooij W. J., Gorecki G. - Comparative EIS study of pretreatment performance in coated metals, Progress in Organic Coatings, Vol.30, (4), 1997, p. 255-263.
[16]. Miskovic Stankovic V. B., Maksimovic M. D., Kacarevic Popovic Z., Zotovic J. B. - The sorption characteristics and thermal stability of epoxy coatings electrodeposited on steel and steel electrochemically modified by Fe-P alloys, Progress in Organic Coatings. Vol. 33, (1), 1998, p. 68-75.
[17]. Deflorian F., Fedrizzi L., Bonora P. L. - Organic coating capacitance measurements by EIS: ideal and actual trends, Electrochimica Acta, Vol. 44, (24), 1999, p. 4243-4249.
[18]. Deflorian F., Miskovic V. B., Bonora P. L., Fedrizzi L. - Degradation of epoxy coatings on phosphatized zinc electroplated steel, Corrosion, Vol. 50, (6), 1994, p. 438-446.
[19]. Sabata A., Ooij W. J. and Koch R. J. - The Interphase in Painted Metals Pretreated by Functional Silanes, Journal of Adhesion science and Technology, Vol. 7, (11), 1993, p. 1153-1170.
[20]. Amirudin A., Thierry D. - Application of electrochemical impedance spectroscopy to study efficiency of anticorrosive pigments in epoxy-polyamide resin, British Corrosion Journal, Vol. 30, (2), 1995, p. 128-134.
[21]. Kendig M., Scully J. - Basic Aspects of Electrochemical Impedance Application for the Life Prediction of Organic Coatings on Metals, Corrosion, Vol. 46, 1990, p. 22-29.
[22]. Ciubotariu A. C., Benea L., Mitoşeriu O., Ponthiaux P., Wenger F. - Influence of particles size on the morphology and corrosion behaviour of phenol –formaldehyde/Zn composite coatings obtained by electrodeposition, Journal of Optoelectronics and Advanced Materials. Vol. 11, (6), 2009, p. 892-897.
[23]. Detlefsen W. D., Phenolic resins: some chemistry: technology and history, Edited by M. Chaudhury, A .V. Pocius, 2002.
[24]. Wei W., Hu H., You L., Chen G., Preparation of carbon molecular sieve membrane from phenol-formaldehyde Novolac resin, Carbon Vol. 40, (3), 2002, p. 465-467.
[25]. Ciubotariu A. C., Benea L., Lakatos - Varsanyi M., Drăgan V. - Electrochemical Impedance Spectroscopy and Corrosion Behaviour of Al2O3 - Ni Nano Composite Coatings, Electrochimica Acta, Vol. 53, (13), 2008, p. 4557-4563.
[26]. Souza M. E. P., Ballester M., Freire C. M. A. - EIS characterization of Ti anodic oxide porous films formed using modulated potential, Surface and Coatings Technology, Vol. 20l, (18), 2007, p. 7775-7780.
[27]. Stern M., Geary A. - Journal of the Electrochemical Society, Vol. 105, 1958, p. 638-647.
Published
2009-11-15
How to Cite
1.
CIUBOTARIU A-C, BENEA L, MITOŞERIU O, PONTHIAUX P, WENGER F. Morphological Aspects and Corrosion Behaviour of Phenol Formaldehyde/Zn Composite Coatings. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Nov.2009 [cited 22Dec.2024];32(2):31-7. Available from: https://gup.ugal.ro/ugaljournals/index.php/mms/article/view/3033
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