Abstract
Electrophoretic deposition is used to produce a silica layer on zinc-coated steel and chromated zinc-coated steel. This type of coating is commonly employed in car industries to protect steel against corrosion. Because of the presence of zinc and chromated layers on the substrate, the polarization must be cathodic to avoid oxidation. Reversal of the silica surface charge is obtained using different methods, such as cation adsorption, cationic polymer (polyvinylimidazole) adsorption or oxide (cerium oxide) adsorption. The production of deposits using cations is quite difficult because it is necessary to add a high concentration of salt to reverse the silica charge, provoking high conductivity and gas release at the cathode. With polyvinylimidazole, the instability of the polymer is also a restrictive factor for the application of electrophoresis. The most promising results are obtained with ceriacovered silica. In fact the system is stable under the electric field and allows homogeneous coatings to be produced. The polarization resistance measurements indicate the good protective effect compared with the untreated substrate.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
P. Sarkar and P. S. Nicholson, J. Amer. Ceram. Soc. 79 (1996) 1987.
A. Foissy, Thesis, Besançon (1975).
A. Foissy and G. Robert, Amer. Ceram. Soc. Bull. 61 (1982) 251.
P. Sarkar, X. Haung and P. S. Nilcholson, J. Amer. Ceram. Soc. 75 (1992) 2907.
G. Hein, H. MÜller, H. Piel, L. Ponto, U. Becks, U. Klein and M. Peininger, J. Appl. Phys. 66 (1989) 5940.
K. S. Chang, J. Colloid Interface Sci. 165 (1994) 169.
A. Kozawa, J. Inorg. Nucl. Chem. 21 (1961) 315.
R. K. Iler, J. Colloid Interface Sci. 37 (1971) 364.
M. R. BÖhmer, W. H. A. Heesterbeek, A. Deratani and E. Renard, Colloids Surf. A 99 (1995) 53.
M. Nabavi, O. Spalla and B. Cabane, J. Colloid Interface Sci. 160 (1993) 459.
B. PÖpping, Thesis Paris VI (1993).
C. J. G. Var der grift, A. Milder and J. W. Geus, Colloid Surf. A (1991) 223.
O. De sanctis, J. Non-Cryst. Solids 120 (1990) 338.
M. Atik, P. de Lima Neto, M. A. Aegerter and L. A. Avaca, J. Appl. Electrochem. 25 (1995) 142.
H. C. Hamaker and E. J. W. Verwey, Trans. Faraday Soc. 36 (1940) 180.
E. E. Bibik, I. S. Lavrov and O. M. Merkushev, Kolloidnyi Z. 30 (1968) 494.
D. D. Mac donald, J. Electrochem. Soc. 125 (1978) 1443.
M. Stern and A. L. Geary, J. ibid. 104 (1956) 56.
S. Ahrland and I. Grenthe, Acta Chem. Scand. 14 (1960) 1059.
R. O. James and T. W. Healy, J. Colloid Interface Sci. 40 (1972) 65.
J. Persello and A. Foissy, in “Surface chemistry of silicas”, edited byP. J. Legrand (Wiley, New York 1998) 365.
A. Takahashi, Y. Miyoshi and T. Hada, J. Electrochem. Soc. 141 (1994) 954.
G. M. Lindquist and R. A. Stratten, J. Colloid Interface Sci. 55 (1976) 45.
N. Desbois, Thesis, Besanion (1992).
B. Cabot, A. Deratani and A. Foissy, Colloids & Surfaces A, 139 (1998) 287.
B. Cabot, Thesis, Besanion (1997).
K. Kham, A. Deratini, B. Sebille, J. Gal and L. T. Yu, New J. Chem. 16 (1992) 505.
G. B. Alexander and G. H. Bolt, US Patent 007 878 (Du Pont) (1961).
M. Mindick and A. C. Thompson, US Patent 3 244 639 (Nalco Chemical Co.) (1966).
Idem. US Patent 3 252 917 (Nalco Chemical Co.) (1966).
E. P. Katsanis and E. Matijevic, in Proceedings of the 49th National Colloid Symposium, Postdam, NY, (1975).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Cabot, B., Foissy, A. Reversal of the surface charge of a mineral powder: application to electrophoretic deposition of silica for anticorrosion coatings. Journal of Materials Science 33, 3945–3952 (1998). https://doi.org/10.1023/A:1004692611926
Issue Date:
DOI: https://doi.org/10.1023/A:1004692611926