Durability of bare and anodised aluminium in atmosphere of Very different corrosivities. I. Bare aluminium

Authors

  • J. A. González CENIM
  • E. Escudero CENIM
  • V. López CENIM
  • J. Simancas CENIM
  • M. Morcillo CENIM

DOI:

https://doi.org/10.3989/revmetalm.2004.v40.i4.273

Keywords:

aluminium, anodising, durability, EIS, atmospheric corrosion

Abstract


The behaviour of bare aluminium is studied in atmospheric exposure at 11 natural testing stations with salinity levels ranging between 2.1 and 684 mg Cl-1m-2d-1. In atmospheres of low or moderate aggressivity aluminium behaves as a passive material, though the insignificant corrosion that is produced is sufficient to spoil its appearance. In contrast, at salinity levels of 50 mg Cl-1m-2d-1 or above, aluminium is susceptible to pitting corrosion even in the first year of atmospheric exposure, or in the second year at salinities of s: 10 mg Cl-1m-2d-1 . For comparative purposes, results are included for aluminium protected with an anodic film of 28 μm thickness exposed at the same testing stations. A 28 μm anodic film, correctly sealed, prevents the risk of localised corrosion even in the most unfavourable situations.

Downloads

Download data is not yet available.

Downloads

Published

2004-08-30

How to Cite

González, J. A., Escudero, E., López, V., Simancas, J., & Morcillo, M. (2004). Durability of bare and anodised aluminium in atmosphere of Very different corrosivities. I. Bare aluminium. Revista De Metalurgia, 40(4), 259–269. https://doi.org/10.3989/revmetalm.2004.v40.i4.273

Issue

Section

Articles

Most read articles by the same author(s)

1 2 3 4 5 > >>