Study of main parameters affecting pitting corrosion in a basic medium using the network method
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Ciencia de los Materiales e Ingeniería Metalúrgica; Física AplicadaRealizado en/con
Universidad Politécnica de Cartagena; Universidad Católica del NorteFecha de publicación
2019-03Editorial
ELSEVIERCita bibliográfica
J.F. Sánchez-Pérez, F. Alhama, J.A. Moreno, M. Cánovas, Study of main parameters affecting pitting corrosion in a basic medium using the network method, Results in Physics, Volume 12, 2019, Pages 1015-1025, ISSN 2211-3797, https://doi.org/10.1016/j.rinp.2018.12.066.Revisión por pares
SiPalabras clave
Pitting corrosionPrediction
Numerical methods
Reinforced concrete
Steel
Network method
Resumen
This paper presents a mathematical model of pitting corrosion formed by eight non-linear coupled differential equations and their boundary equations. In this model we studied the effect of the variation of parameter values (temperature, crevice depth, oxygen and sodium chloride concentration outside the cavity, and pH) on all the concentrations of the species, and on their differences with their concentrations outside the crevice and along the cavity using the network method. Moreover, a sensitivity study of the system parameters has been carried out. No simplifications have been considered, although the model is firmly coupled and susceptible to any variation of the aforementioned parameters. The development of the model is clearly explained. The results are compared with data published in the scientific literature for domains that establish the most complex and complete scenarios to verify the reliability of the model. One of the practical applications of this work, among others, is ...
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