Behaviour of painted aluminium in Ibero-American atmospheres

Authors

  • M. Morcillo Department of Materials Engineering. Degradation and Durability. National Metallurgical Research Centre (CENIM-CSIC)
  • J. Simancas Department of Materials Engineering. Degradation and Durability. National Metallurgical Research Centre (CENIM-CSIC)
  • F. Corvo Centro Nacional de Investigaciones Científicas
  • B. Rosales CITEFA. DEICOR
  • F. Fragata CEPEL Ilha da Cidade Universitária-Rio de Janeiro
  • J. Peña Escuela Superior Politécnica del Litoral
  • M. Sánchez Universidad Tecnológica de Panamá
  • S. Flores Pontificia Universidad Católica del Perú
  • E. Almeida Instituto Nacional de Engenharia e Tecnología Industrial (INETI)
  • S. Rivero Universidad de la República
  • O. T. de Rincón Facultad de Ingeniería, Universidad del Zulia

DOI:

https://doi.org/10.3989/revmetalm.2003.v39.iExtra.1112

Keywords:

Atmospheric behaviour, Aluminium, Painting, Lackering, Ibero-America

Abstract


Aluminium generally presents good corrosion resistance to the atmosphere. However, unprotected aluminium and aluminium alloys weather outdoors to an ugly grey colour, which deepens to black in industrial atmospheres, and undergo superficial pitting in marine atmospheres, etc. Finishing technologies are applied for their protection and decoration in a wide range of applications. These technologies basically consist of two protection processes: anodizing and painting; the latter going from conventional solvent base paints to modem water-borne, high solids and powder coatings. This paper considers the weathering performance of three paint systems: alkyd, polyurethane and polyester, after more than three years of exposure in a wide spectra of Ibero-American atmospheric conditions. The information reported includes resistance to undercutting corrosion at the scribe, filiform corrosion, fungal attack and change in the physical-chemical properties of the paint surface (loss of gloss, colour changes, chalking, etc.).

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Published

2003-12-17

How to Cite

Morcillo, M., Simancas, J., Corvo, F., Rosales, B., Fragata, F., Peña, J., Sánchez, M., Flores, S., Almeida, E., Rivero, S., & de Rincón, O. T. (2003). Behaviour of painted aluminium in Ibero-American atmospheres. Revista De Metalurgia, 39(Extra), 151–156. https://doi.org/10.3989/revmetalm.2003.v39.iExtra.1112

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