Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Surface evaluation of laser shock processed aluminium alloy after pitting corrosion attack with optical 3-d metrology method
Year:2009
Research Areas
  • Mechanical engineering,
  • Construction materials
Information
Abstract
The corrosion behaviour of the AlSi1MgMn laser-shock-processed aluminium alloy was investigated in 3.5% NaCl water solution at ph7 and 23°C. Potentiodynamic polarization tests were conducted at a scanning rate of 10mV/s, starting at 2000mVSCE. Corrosion plots showed pitting corrosion attack. Surface conditions after corrosion tests at different pulse density levels were evaluated with optical microscopy, scanning electron microscopy (SEM), EDS analysis and innovative non-destructive 3D surface metrology method. The SEM analysis showed a large presence of chloride and oxide products near the pits. The non-destructive 3D metrology method proved to be an extremely perspective method to determine surface conditions in a way the traditional microscopy could not. The results of the research confirm its use in detail analysis of the pits formed at the surface as a result of electrochemical corrosion attack. The tests confirm that a greater pulse density of the surface treated guarantees a smaller number of pits per surface unit and is reflected also by the movement of the pitting potential towards bigger corrosion resistance.
International
Si
Congress
The 10th International Conference of the Slovenian Society for Non-Destructive Testing Application of Contemporary Non-Destructive Testing in Engineering
960
Place
Ljubljana, Slovenia
Reviewers
Si
ISBN/ISSN
0000000000000
Start Date
01/09/2009
End Date
03/09/2009
From page
251
To page
258
Disco completo con la edición: The 10th International Conference of the Slovenian Society for Non-Destructive Testing "Application of Contemporary Non-Destructive Testing in Engineering"
Participants
  • Participante: U. Trdan (University of Ljubljana, Faculty of Mechanical Engineering, Laboratory for Materials Testing)
  • Participante: J. Grum (University of Ljubljana, Faculty of Mechanical Engineering, Laboratory for Materials Testing)
  • Autor: Jose Luis Ocaña Moreno (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería y Aplicaciones del Láser
  • Centro o Instituto I+D+i: Centro Laser
  • Departamento: Física Aplicada a la Ingeniería Industrial
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