Assessing the tribocorrosionnext term behaviour of Cu and Al by electrochemical impedance spectroscopy

Jean Geringer (1, 2, 3, 4) , Bernard Normand (5) , Catherine Alemany-Dumont (5) , Robert Diemiaszonek (5)

1 CIS-ENSMSE - Centre Ingénierie et Santé
2 PECM-ENSMSE - Plasticité, Endommagement et Corrosion des Matériaux
3 IFRESIS - Institut Fédératif de Recherche en Sciences et Ingénierie de la Santé
4 DB2M-ENSMSE - Département Biomécanique et Biomatériaux
5 MATEIS - Matériaux, ingénierie et science [Villeurbanne]

This study is focused on the interests and limits of Electrochemical Impedance Spectroscopy, to establish the electrochemical behaviour of a tribosystem between Cu and Al, in acid solution. The calculated capacitance, in high-frequency range, partially allows understanding the double layer state of body in the contact. The Potential of Zero Charge (PZC) was calculated for Cu sample and it was associated with a potential range for Al. PZC value of each material is discussed as a key parameter of sliding contact. During tests of wear, the EIS results are related to the evolution of adsorbed water molecules.

Mots clés: Tribocorrosion; Cu; Al; EIS

Domaines: Génie des procédés; Ingénierie biomédicale; Matériaux

Jean Geringer, Bernard Normand, Catherine Alemany-Dumont, Robert Diemiaszonek. Assessing the tribocorrosionnext term behaviour of Cu and Al by electrochemical impedance spectroscopy. Tribology International, 2010, 43 (11), pp.1991-1999. ⟨10.1016/j.triboint.2010.04.018⟩. ⟨hal-00524998⟩