Evaluation of corrosion resistance on coatings obtained by sputtering of a chromiun cathode by electrochemical techniques

  • Anderson Andrés Sandoval-Amador Físico, Grupo de Investigaciones en Corrosión Universidad industrial de Santander Bucaramanga,
  • Darío Yesid Peña-Ballesteros Ph.D. Grupo de Investigaciones en Corrosión Universidad industrial de Santander Bucaramanga,
  • Ulises Piratona-Morales Ph.D Grupo de Superficies Electroquímica y Corrosión Universidad Pedagógica y Tecnológica de Colombia Tunja,
Keywords: AISI H13, EIS, sputtering, Tafel, corrosion rate

Abstract

The  corrosion  resistance  of  coatings  obtained  by  sputtering  of  a  chromium  target  on substrates of  steel  AISI  H13  was  evaluated.  Through  the  analysis of  electrochemical impedance  spectroscopy  (EIS)  and Tafel  polarization  curves  in  a  solution  of  3%  NaCl  by weight was found that these coatings have a corrosion rate lower than the substrate. Moreover, EIS data fit an equivalent electrical circuit that contains two constant phase elements; this is typical circuit for interpreting the behavior of a metal electrode on which has been deposited an insulating and porous coating.

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Published
2014-12-31
How to Cite
Sandoval-Amador, A., Peña-Ballesteros, D., & Piratona-Morales, U. (2014). Evaluation of corrosion resistance on coatings obtained by sputtering of a chromiun cathode by electrochemical techniques. ITECKNE, 11(2), 183-189. https://doi.org/https://doi.org/10.15332/iteckne.v11i2.731
Section
Research and Innovation Articles