Modeling fretting-corrosion wear of 316L SS against poly(methyl methacrylate) with the Point Defect Model: Fundamental theory, assessment, and outlook

Jean Geringer (1, 2, 3, 4) , Digby D. Macdonald (5, 6)

1 CIS-ENSMSE - Centre Ingénierie et Santé
2 IFRESIS - Institut Fédératif de Recherche en Sciences et Ingénierie de la Santé
3 DB2M-ENSMSE - Département Biomécanique et Biomatériaux
4 LCG-ENSMSE - UMR 5146 - Laboratoire Claude Goux
5 DMSE - Department of Materials Science and Engineering
6 CREC - Center of Research Excellence in Corrosion

This work aims at investigating experimentally fretting corrosion, that is, corrosion induced by friction of AISI 316L SS against poly(methyl methacrylate) under small displacements. The observed wear on the stainless steel has been modeled using the Point Defect Model (PDM). The originality of this approach in applying the PDM to fretting corrosion consists of using a modified rate of the barrier layer dissolution, in the case of cyclical wear, such that the rate of destruction of the barrier layer at the barrier layer/solution interface exceeds the rate of barrier layer growth at the metal/barrier layer interface at zero barrier layer thickness, which is the condition specified by the PDM for depassivation. By optimization of the PDM on experimental electrochemical impedance data under fretting conditions, we have been able to ascertain values for various model parameters, and to calculate the steel volume loss as a function of potential.

Mots clés: Point Defect Model; Tribo-corrosion; Fretting corrosion; Wear; Stainless steel

Domaines: Génie des procédés; Matériaux; Biomécanique [physics.med-ph]; Biomécanique [physics.med-ph]

Jean Geringer, Digby D. Macdonald. Modeling fretting-corrosion wear of 316L SS against poly(methyl methacrylate) with the Point Defect Model: Fundamental theory, assessment, and outlook. Electrochimica Acta, 2012, 79, pp.17-30. ⟨10.1016/j.electacta.2012.06.028⟩. ⟨hal-00753542⟩