Abstract
We show that calcium monohydrophosphate can serve as an efficient inhibiting component of anticorrosive coatings applied on an aluminum-copper alloy. It has been established that the charge-transfer resistance of D16T alloy under the influence of CaHPO4 solution approaches the value characteristic of a medium with strontium chromate. Calcium monohydrophosphate simulates the behavior of strontium chromate inhibitor, retarding the cathodic and anodic corrosion reactions on the surface of aluminum alloys.
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References
Z. Szklarska-Smialowska, “Pitting corrosion of aluminum,” Corr. Sci., 41, No. 9, 1743–1767 (1999).
J. R. Scully, T. O. Knight, R. G. Buchheit, and D. E. Peebles, “Electrochemical characteristics of the Al2Cu, Al3Ta and Al3Zr intermetallic phases and their relevancy to the localized corrosion of Al alloys,” Corr. Sci., 35, 185–195 (1993).
G. S. Chen, M. Gao, and R. P. Wei, “Microconstituent-induced pitting corrosion in aluminum alloy 2024-T3,” Corrosion, 52, 8–15 (1996).
R. P. Wei, C. M. Liao, and M. Gao, “A transmission electron microscopy study of constituent-particle-induced corrosion in 7075-T6 and 2024-T3 aluminum alloys,” Metal. Mat. Trans., Ser. A: Phys. Metallurgy Mat. Sci., 29, 1153–1160 (1998).
I. M. Zin, R. L. Howard, S. J. Badger, et al., “The mode of action of chromate inhibitor in epoxy primer on galvanized steel,” Progr. Org. Coat., 33, No. 3–4, 203–210 (1998).
F. Mansfeld, “Use of electrochemical impedance spectroscopy for the study of corrosion protection by polymer coatings,” J. Appl. Electrochem., 25, 187–202 (1995).
B. A. Boucamp, “A nonlinear least squares fit procedure for analysis of immittance data of electrochemical systems,” Solid State Ionics, 20, 31–44 (1986).
E. P. M. van Westing, G. M. Ferrari, and J. Y. W. de Wit, “The determination of coating performance using electrochemical impedance spectroscopy,” Electrochim. Acta, 39, No. 7, 899–910 (1994).
G. S. Frankel and R. L. McGreery, “Inhibition of Al alloy corrosion by chromates,” in: The Electrochemical Society Interface, Winter (2001), pp. 34–36.
M. Kendig, S. Jeanjaquet, R. Addison, and J. Waldrop, “Role of hexavalent chromium in the inhibition of corrosion of aluminum alloys,” Surf. Coat. Technol., 140, No. 1, 58–66 (2001).
H. F. Clay and J. H. Cox, “Chromate and phosphate pigments in anti-corrosive primers,” JOCCA, 56, 13–20 (1973).
A. Amirudin, C. Barreau, R. Hellouin, and D. Thierry, “Evaluation of anti-corrosive pigments by pigment extract studies, atmospheric exposure and electrochemical impedance spectroscopy,” Progr. Org. Coat., 25, No. 4, 339–355 (1995).
A. I. Kirgintsev, L. N. Rushnikova, and V. G. Lavrent’eva, Solubility of Inorganic Matter in Water: Handbook [in Russian], Khimiya, Leningrad (1972).
Y. Tanizawa, K. Sawamura, and T. Suzuki, “Reaction characteristics of dental and synthetic apatites with Al3+and La3+ ions in acidic solutions,” J. Chem. Soc. Faraday Trans., 86, No. 24, 4025–4035 (1990).
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 42, No. 5, pp. 7–11, September–October, 2006.
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Pokhmurs’kyi, V.I., Kwiatkowski, L., Zin’, I.M. et al. Corrosion protection of aluminum alloys by inhibiting pigments. Mater Sci 42, 573–578 (2006). https://doi.org/10.1007/s11003-006-0118-1
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DOI: https://doi.org/10.1007/s11003-006-0118-1