Corrosion behavior of Cu-Ni-Ti in artificial blood plasma in presence of cholesterol

Authors

  • John S. Mary Dept. of Chemistry, Loyola College, Chennai, India Author
  • Susai Rajendran Corrosion Research centre, P.G. & Research Dept. of Chemistry, G.T.N. Arts College, Dindigul, Tamilnadu, India Author

DOI:

https://doi.org/10.5937/ZasMat1403244M

Keywords:

corrosion, artificial blood plasma, Cu-Ni-Ti, cholesterol

Abstract

The Corrosion behaviour of Cu-Ni-Ti in artificial blood plasma in absence and presence of 50ppm and 100ppm of Cholesterol were studied by potentiodynamic polarization study and AC impedance spectra. The inhibition efficiencies of Cholesterol for the corrosion of Cu-Ni-Ti is increased with increasing concentration. Potentiodynamic polarization study shows that the corrosion of metal surface is greatly reduced with presence of Cholesterol. This may occur due to the formation of protective layer formed on the metal in presence of Cholesterol. The polarization study leads to the corrosion inhibition of Cu-Ni-Ti in artificial blood plasma in absence and presence of 50 ppm of Cholesterol and100 ppm of cholesterol is in the following decreasing order: Cu-Ni-Ti + artificial blood plasma + 100 ppm of Cholesterol > Cu-Ni-Ti + artificial blood plasma + 50 ppm of Cholesterol > Cu-Ni-Ti + artificial blood plasma The AC impedance spectra study reveals that the corrosion inhibition of Cu-Ni-Ti in artificial blood plasma in absence and presence of 50 ppm of Cholesterol and100 ppm of Cholesterol is in the following decreasing order: Cu-Ni-Ti + artificial blood plasma + 100 ppm of Cholesterol > Cu-Ni-Ti + artificial blood plasma + 50 ppm of Cholesterol > Cu-Ni-Ti + artificial blood plasma.

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Published

15-09-2014

Issue

Vol. 55 No. 3 (2014)

Section

Articles