Protective films of stearic and octadecylphosphonic acid formed by spray coating


  • Ekatarina Kristan Mioč Faculty of Chemical Engineering and Technology, University of Zagreb
  • Helena Otmačić Ćurković Faculty of Chemical Engineering and Technology, University of Zagreb



Corrosion, electrochemical impedance spectroscopy, polarization measurements, FTIR, cupronickel alloy


Spray coating formation of stearic and octadecylphosphonic acid films for corrosion protection of cupronickel alloy was studied in this work as a more practical alternative to widely studied dip-coating method. Protective properties of organic films formed under various experimental conditions were examined by electrochemical studies in 3% NaCl solution as a corrosive medium. Polarization resistance measurements as well as electro­chemical impedance spectroscopy were employed to follow in time the corrosion behaviour of cupronickel alloy modified by studied organic acids. It was found that among examined experimental parameters, time elapsed between two sprays and number of sprays have the strongest influence on the film stability and its protective properties. This study confirmed that it is possible to form by spray coating the films of stearic and octadecyl­phosphonic acid with protective properties that resemble to those of the films prepared by dip-coating method. Differences in corrosion behaviour of samples protected with stearic and octadecyl­phosphonic acid were attributed to difference in the bond strength between substrate and each organic acid. Studied samples were also examined by the scanning electron microscopy. Fourier transformed infrared spectroscopy studies showed that crystalline structure dominates in studied films, while contact angle measure­ments confirmed that modified cupronickel alloy surface exhibits hydrophobic properties.


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C. Queffelec, M. Petit, P. Janvier, D. A. Knight, B. Bujoli, Chemical Reviews 112 (2012) 3777 – 3807.

P. J. Hotchkiss, S. C. Jones, S. A. Paniagua, A. Sharma, B. Kippelen, N. R. Armstrong, S. R. Marder, Accounts of Chemical Research 45 (2012) 337 – 346.

R. Michel, J.W. Lussi, G. Csucs, I. Reviakine, G. Danuser, B. Ketterer, J. A. Hubbell, M. Textor, N. D. Spencer, Langmuir 18 (2002) 3281 – 3287.

S. Flink, F. C. J. M. van Veggel, D. N. Reinhoudt, Advanced Materials 12 (2000) 1315-1328.

S. P. Pujari, L. Scheres, A. T. M. Marcelis, H. Zuilhof, Angewandte Chemie International Edition 53 (2014) 6322-6356.

S. Ghareba, S. Kwan, S. Omanovic, Journal of Electrochemical Science and Engineering 5 (2015) 157-172.

E. Kristan Mioč, Z. Hajdari Gretić, H. Otmačić Ćurković, Corrosion Science 134 (2018) 189-198.

A. Ulman, Chemical Reviews 96 (1996) 1533-1554.

G. M. Whitesides, G. S. Ferguson, D. Allara, D. Scherson, L. Speaker, A. Ulman, Critical Reviews in Surface Chemistry 3 (1993) 49-65.

T. Ishizaki, M. Okido, Y. Masuda, N. Saito, M. Sakamoto, Langmuir 27 (2011) 6009-6017.

R. Quiñones, A. Raman, E. S. Gawalt, Thin Solid Films 516 (2008) 8774–8781.

J. Telegdi, H. Otmačić Ćurković, K. Marušić, F. Al-Taher, E. Stupnišek-Lisac, E. Kálmán Chemical and Biochemical Engineering Quarterly 21 (2007) 77-82.

I. Milošev, M. Metikoš-Huković, Ž. Petrović, Materials Science and Engineering C 32 (2012) 2604–2616.

Z. Hajdari, H. Otmačić Ćurković, V. Čadež, S. Šegota, Journal of the Electrochemical Society 163 (2015) C145-C155.

Z. Hajdari Gretić, E. Kristan Mioč, V. Čadež, S. Šegota, H. Otmačić Ćurković, S. Hosseinpour, Journal of the Electrochemical Society 163 (2016) C937-C944.

G. A. Buckholt, E. S. Gawalt, Materials 5 (2012) 1206-1218.

A. Bulusu, S. A. Paniagua, B. A. MacLeod, A. K. Sigdel, J. J. Berry, D. C. Olson, S. R. Marder, S. Graham, Langmuir 29 (2013) 3935-3942.

D. K. Schwartz, Annual Review of Physical Chemistry 52 (2001) 1017-137.

S. G. Brass, G. Ehrlich, Physical Review Letters 57 (1986) 2532–2535.

H. Zang, X. Wang, L. Zheng, X. Jiang, International Journal of Heat and Mass Transfer, 44 (2001) 4579–4592.

D. H. Charlesworth W. R. Marshall, AIChE Journal 6 (1960) 9–23.

Z. Grubač, I. Škugor Rončević, M. Metikoš-Huković, R. Babić, M. Petravić, R. Peter, Journal of the Electrochemical Society 159 (2012) C253–C258.

P. Wang, C. Liang, B. Wu, N. Huang, J. Li, Electrochimica Acta 55 (2010) 878–883.

B. R. A. Neves, M. E. Salmon, P. E. Russell, E. B. Troughton, Langmuir, 17 (2001) 8193-8198.

J. R. Macdonald, Impedance Spectroscopy, Emphasizing Solid Materials and Systems, John Wiley & Sons, Inc., New York, USA, 1987.

A. Raman, M. Dubey, I. Gouzman, E.S. Gawalt, Langmuir 22 (2006) 6469–6472.

D.L. Allara, R.G. Nuzzo, Langmuir 1 (1985) 45–52.

A. Raman, R. Quiñones, L. Barriger, R. Eastman, A. Parsi, E.S. Gawalt, Langmuir 26 (2010) 1747–1754.

F. Kimura, J. Umemura, T. Takenaka, Langmuir 2 (1986) 96–101.

A. Baptiste, A. Gibaud, J.F. Bardeau, K. Wen, R. Maoz, J. Sagiv, B. M. Ocko, Langmuir 18 (2002) 3916–3922.

G. J. Brug, A. L. G. van der Eeden,M. Sluyters-Rehbach, J. H. Sluyters, Journal of Electroanalytical Chemistry 176 (1984) 275-295.



How to Cite

Kristan Mioč, E., & Otmačić Ćurković, H. (2020). Protective films of stearic and octadecylphosphonic acid formed by spray coating. Journal of Electrochemical Science and Engineering, 10(2), 161–175.



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