Assessment of the surface state behaviour of Al71Cu10Fe9Cr10 and Al3Mg2 complex metallic alloys in sliding contacts

Abstract : Electrochemical measurements and friction measurements during continuous and intermittent unidirectional sliding tests are used to monitor and to evaluate the surface characteristics of two types of metallic materials characterized by a huge unit cell, namely Al71Cu10Fe9Cr10 and Al3Mg2. The modification of the surface characteristics results from the periodic mechanical removal of a surface film during sliding, and the subsequent (electro)chemical re-growth of a surface film in-between successive sliding contacts. Al71Cu10Fe9Cr10 and Al3Mg2 materials were tested in a phosphate buffer solution pH 7 at 25 degrees C to compare their depassivation and subsequent repassivation behaviour. The Al3Mg2 material was also tested in a 0.1 M KOH solution pH 13 and 25 degrees C to reveal the role of constituting metallic elements on the surface film formation. The effect of film formation and removal on the coefficient of friction recorded during unidirectional sliding is discussed.
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Article dans une revue
Intermetallics, Elsevier, 2009, 17 (11), pp.930-937. 〈10.1016/j.intermet.2009.04.003〉
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https://hal-centralesupelec.archives-ouvertes.fr/hal-01247653
Contributeur : Catherine Kruch <>
Soumis le : mardi 22 décembre 2015 - 14:50:51
Dernière modification le : jeudi 5 avril 2018 - 12:30:09

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N. Diomidis, N. Göçkan, P. Ponthiaux, F. Wenger, J.-P. Celis. Assessment of the surface state behaviour of Al71Cu10Fe9Cr10 and Al3Mg2 complex metallic alloys in sliding contacts. Intermetallics, Elsevier, 2009, 17 (11), pp.930-937. 〈10.1016/j.intermet.2009.04.003〉. 〈hal-01247653〉

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