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ISSN 2083-6473
ISSN 2083-6481 (electronic version)
 

 

 

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Tomasz Neumann
 

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TransNav, Faculty of Navigation
Gdynia Maritime University
3, John Paul II Avenue
81-345 Gdynia, POLAND
www http://www.transnav.eu
e-mail transnav@am.gdynia.pl
Investigation of Corrosion Inhibitors by Nuclear Quadrupole Resonance Relaxometry Method
1 Baltic Fishing Fleet State Academy, Kaliningrad, Russia
2 Immanuel Kant Baltic Federal University, Kaliningrad, Russia
ABSTRACT: The changes taking place with the corrosion-resistant coating, but not the state of the surface subjected to corrosion are investigated in this paper in contrast to traditional approaches. We used the method of nitrogen relaxometry NQR and multi-exponential inversion of decay of longitudinal and transverse components of the nuclear magnetization is applied for the first time for this purpose. The results of experimental studies of changes in the distributions of spin-spin and spin-lattice relaxation of crystallite powder of sodium nitrite and urotropin, the mixture of which is used as a corrosion inhibitor of ferrous metals are considered.
REFERENCES
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GOST 16295-93. 1993. Interstate standard. Anticorrosive paper (in Russian). http://www.germesagro.ru/gosti/ gost1629593.php
Marino I.-G. 2004. Regularized Inverse Laplace Transform, http://www.mathworks.com/matlabcentral/fileexchange/6523-rilt/content/rilt.m
Hassan A.R., Ismael A.K., Hassan F.N. 2013. Sodium nitrite as inhibitors for protection of rebar against corrosion. Al-Muthanna Journal for Engineering Sciences 2(1): 82-96.
Rosenberg A. H. and Gaidis J. M. 1979. The mechanism of nitrite Inhibition of chloride attack on reinforcing steel in alkaline aqueous environments. Materials Performance 18(11): 45–48.
Sinyavsky Nikolay, Mozzhukhin Georgy V. & Dolinenkov Philip. 2014. Size Effect in 14N Nuclear Quadrupole Resonance Spectroscopy, In T. Apih et al. (eds.), Magnetic Resonance Detection of Explosives and Illicit Materials, NATO Science for Peace and Security Series B: Physics and Biophysics: 69-76. Dordrecht: Springer.
Sinyavsky N., Dolinenkov P., Kupriyanova G. 2014. The T1 and T2 Relaxation Times Distribution for the 35Cl and 14N NQR in Micro-composites and in Porous Materials. Applied Magnetic Resonance 45: 471–482.
Sinyavsky N. Ya. 2014. Effect of the Nuclear Magnetization Diffusion on the Relaxation Time Distribution in Microcrystals. Russian Physics Journal 57(8): 1149-1151.
Citation note:
Sinyavsky N.Ya., Mershiev I.G., Korneva I.P.: Investigation of Corrosion Inhibitors by Nuclear Quadrupole Resonance Relaxometry Method. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 9, No. 4, doi:10.12716/1001.09.04.17, pp. 587-590, 2015

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