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Effect of Zn incorporation on the electrochemical corrosion properties of SAC105 solder alloys

  • N. K. Liyana
  • M. A. FazalEmail author
  • A. S. M. A. Haseeb
  • Saeed Rubaiee
Article
  • 13 Downloads

Abstract

The corrosion behaviour of lead-free solder alloy, Sn–1.0Ag–0.5Cu–XZn (X = 0, 0.1, 0.5, 1.0) was investigated by polarization, electrochemical impedance spectroscopy, scanning electron microscopy, energy dispersive spectrometry and X-ray diffractometry upon exposure in 3.5 wt% NaCl solution. The polarization curves showed that the addition of Zn in SAC105 solder alloy increased the corrosion current density and shifted the corrosion potential towards more negative values. The corrosion resistance of Sn–1.0Ag–0.5Cu–XZn alloys was reduced with the increase of Zn concentration. The EIS results were in consistent with the findings obtained from polarization curves. The corrosion products detected on the surface includes Sn3O(OH)2Cl2, SnO, SnO2 and ZnO.

Abbreviations

ΔE

Passivation range

|Z|

Magnitude of impedance

θmax

Maximum phase angle

Ecorr

Corrosion potential

Epass

Passivation potential

icorr

Corrosion current density

icc

Critical current density

ipass

Passive current density

Notes

Acknowledgements

The authors would like to acknowledge the financial support under the UMRG Project No.: RP013B-13AET provided by the University of Malaya, Malaysia.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringUniversity of MalayaKuala LumpurMalaysia
  2. 2.Department of Mechanical and Materials EngineeringUniversity of JeddahJeddahKingdom of Saudi Arabia
  3. 3.Department of Industrial EngineeringUniversity of JeddahJeddahKingdom of Saudi Arabia

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