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The effect of Sn addition and sulfide ion concentration on the corrosion behavior of Cu-35Zn in NaCl solution

  • Mohammad Saleh Kenevisi and Ali Safdari Nasab
Published/Copyright: February 7, 2014
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 105 Issue 2

Abstract

This study investigates the corrosion behavior of Cu-35Zn brass with 0 and 5 wt.% of tin in NaCl solution with a mass concentration of 3.5% containing 0, 400 and 1200 ppm of sulfide ions. For the purpose of assessing the corrosion behavior, open circuit potential, linear polarization resistance, electrochemical impedance spectroscopy and potentiodynamic polarization studies were employed. The results of the study show that on increasing the S2− concentration, an increase in the corrosion rate of the samples was observed. Moreover, the addition of Sn to the alloy leads to an increase in the polarization resistance and electrochemical impedance of the alloy. The corrosion potential as well as the corrosion current density were calculated using the Tafel extrapolation method. Addition of S2− shifts Ecorr towards more negative values and increases icorr. The surface of the samples was studied using light optical microscopy and pits were mainly observed in the grain boundaries of the Cu-35Zn sample.

Keywords: Corrosion; Brass; Corrosion test; Optical metallography; Electrochemical properties
* Correspondence address, Mohammad Saleh Kenevisi, Amirkabir University of Technology (Tehran Polytechnic), Tehran 1591634311, Iran, Tel.: +98(915)5214577, Fax: +98(512)5225317, E-mail:

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Received: 2013-05-09
Accepted: 2013-08-20
Published Online: 2014-02-07
Published in Print: 2014-02-10

© 2014, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111006
Keywords for this article
Corrosion; Brass; Corrosion test; Optical metallography; Electrochemical properties

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Experimental determination of a representative texture and insight into the range of significant neighboring grain interactions via orientation and misorientation statistics
  5. Methods of segregation analysis applied to simulated multicomponent multiphase microstructures
  6. Nanoindentation responses of Si–Ge multilayers
  7. Microstructural and thermodynamic investigations on friction stir welded Mg/Al-joints
  8. Ingot metallurgy and microstructural characterization of Ti–Ta alloys
  9. Microstructural evolution of aluminium–copper alloys during the downward directional solidification process
  10. Indium ion cementation onto aluminum plates in hydrochloric acid solutions: a kinetic perspective
  11. Development of Sn–Cu–Sb alloys for making lead- and bismuth-free pewter
  12. The effect of Sn addition and sulfide ion concentration on the corrosion behavior of Cu-35Zn in NaCl solution
  13. Synthesis and characteristics of precipitation hardened Cu–Cr alloy and multiply hardened Cu–Cr–Al2O3 nanocomposite obtained using powder metallurgy techniques
  14. Effect of rhenium addition on the strengthening of chromium–alumina composite materials
  15. Grain growth and sinterability in Er2O3-doped cubic zirconia (c-ZrO2)
  16. Short Communications
  17. Properties of aluminium coatings produced using manual and robotized flame spraying processes
  18. DGM News
  19. DGM News
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