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Study of Corrosion Behavior of Polyuretane/nanoHidroxiapatite Hybrid Coating in Hank Solution at 25 °C

Published online by Cambridge University Press:  11 May 2015

G. Carbajal-De La Torre ,
A.B. Martinez-Valencia ,
A. Sanchez-Castillo ,
M. Villagomez-Galindo  and
M.A. Espinosa-Medina
G. Carbajal-De La Torre
Affiliation:
Facultad de Ingeniería Mecánica, Universidad Michoacana de San Nicolás de Hidalgo, C.P. 58000, Morelia, Michoacan México.
A.B. Martinez-Valencia
Affiliation:
Facultad de Ingeniería Mecánica, Universidad Michoacana de San Nicolás de Hidalgo, C.P. 58000, Morelia, Michoacan México.
A. Sanchez-Castillo
Affiliation:
Facultad de Ingeniería Mecánica, Universidad Michoacana de San Nicolás de Hidalgo, C.P. 58000, Morelia, Michoacan México.
M. Villagomez-Galindo
Affiliation:
Facultad de Ingeniería Mecánica, Universidad Michoacana de San Nicolás de Hidalgo, C.P. 58000, Morelia, Michoacan México.
M.A. Espinosa-Medina*
Affiliation:
Facultad de Ingeniería Mecánica, Universidad Michoacana de San Nicolás de Hidalgo, C.P. 58000, Morelia, Michoacan México.
*
*E-mail: [email protected]
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Abstract

The study of corrosion behavior of polyurethane/nanohydroxyapatite hybrid coating in aerated Hank solution at 25 °C by Potentiodinamic and Electrochemical Impedance techniques was realized. The nanohydroxyapatite (nHA) powders were synthesized by ultrasonic assisted co-precipitation wet chemical method and then mixed with pure polyurethane (PU) during the polymerization. Results were supported by SEM morphologic characterization. Results showed that good corrosion resistance of hybrid coating, showing small corrosion product layer formation. Corrosion mechanisms are affected by an increasing of polarization resistance, promoting decreasing in the corrosion rates. Diffusion of ionic species was the governing mechanism in the corrosion behavior of polyurethane/nanohydroxyapatite hybrid coating.

Keywords

Corrosioncoatingdiffusionpolymerizationscanning electron microscopy (SEM)
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1766: Symposium 5B – Structural and Chemical Characterization of Metals, Alloys, and Compounds—2014 , 2015 , pp. 159 - 165
Copyright
Copyright © Materials Research Society 2015 

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References

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