Laser Surface Alloying of Aluminium 2014 Alloy With Mo for Enhanced Corrosion Resistance

  • M. A. McMahon
  • K. G. Watkins
  • W. M. Steen
  • R. Vilar
  • M. G. S. Ferreira
Part of the NATO ASI Series book series (NSSE, volume 307)

Abstract

The incorporation of Mo in commercial aluminium 2014 alloy has been investigated via laser surface alloying (LSA) of predeposited plasma spayed layers using a CO2 laser.

The microstructure and composition of the LSA materials produced was investigated via SEM, TEM, SAD, STEM, WDS, XPS and XRD and the electrochemical properties were investigated via anodic potentiodynamic polarisation in chloride electrolyte. It was found that there was a significant increase in the critical pitting potential following LSA treatment. A complex microstructure was displayed consisting of Mo precipitates in an aluminium matrix showing enhanced solid solubility of Mo in aluminium.

Keywords

Saturated Calomel Electrode Heat Affected Zone Select Area Electron Diffraction Pattern Alloyed Layer Intermetallic Particle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • M. A. McMahon
    • 1
  • K. G. Watkins
    • 2
  • W. M. Steen
    • 2
  • R. Vilar
    • 3
  • M. G. S. Ferreira
    • 4
  1. 1.Department of Materials Science and EngineeringUniversity of LiverpoolUK
  2. 2.Department of Mechanical EngineeringUniversity of LiverpoolUK
  3. 3.Dipartamento de Engenharia MateriasInstituto Superior TecnicoLisbonPortugal
  4. 4.Dipartamento de Engenharia QuimicaInstituto Superior TecnicoLisbonPortugal

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