Corrosion and inhibition of medium-strength aluminum alloys

Authors

  • B. Davó Departamento de Corrosión y Protección. Centro Nacional de Investigaciones Metalúrgicas (CSIC)
  • J. J. Damborenea Departamento de Corrosión y Protección. Centro Nacional de Investigaciones Metalúrgicas (CSIC)

DOI:

https://doi.org/10.3989/revmetalm.2004.v40.i6.304

Keywords:

Aluminum alloys, corrosion, inhibitors, lanthanide salts.

Abstract


The use of chromâtes in aluminum alloys with aeronautical applications has been limited because of the high toxicity of these compounds. This has spurred intensive efforts to develop alternative effective and innocuous inhibitors. In this work, corrosion inhibition of a light and high strength Al-Li-Cu alloy (8090) is studied in NaCl solutions with CeCl3 and LaCl3 lanthanide salts added. The corrosion rate is reduced at least one order of magnitude with concentrations between 100-10,000 ppm. SEM, EDS and XPS techniques are used to characterize the rare earth cations incorporated into the surface as oxides and hydroxides.

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Published

2004-12-30

How to Cite

Davó, B., & Damborenea, J. J. (2004). Corrosion and inhibition of medium-strength aluminum alloys. Revista De Metalurgia, 40(6), 442–446. https://doi.org/10.3989/revmetalm.2004.v40.i6.304

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Articles