Wear model for describing the time dependence of the material degradation mechanisms of the AISI 316L in a NaCl solution

Abstract

The tribo-electrochemical behavior of AISI 316L has been investigated under tribocorrosion conditions in a 3% NaCl solution and the material damage evolution with time has been analyzed. A numerical contact model based on a Boundary Element Method (BEM) has been developed in order to determine the contact pressure distribution and to quantify the worn material as a function of time. The time dependence of the tribological behavior of the material has been described. At the initial state, the high contact pressures generate a material flow causing an increase in the worn area. After around 300 cycles, the Archard wear model linearly describes the wear evolution with time. The proposed model describes the evolution with time of the wear profiles of the tested material and takes into account the plastic behavior of the material during the first cycles.

Tribocorrosion of Passive Materials: A Review on Test Procedures and Standards

“…Recently, A. Dalmau et al (2018) [137] developed a numerical contact model based on a Boundary Element Method (BEM) to describe the contact pressure distribution and quantification of the worn material as a function of time, taking into account the plastic behaviour of the material during the first cycles. They validated the model for a AISI 316L steel in a NaCl solution.…”

Tribocorrosion Behavior of NiTi Biomedical Alloy Processed by an Additive Manufacturing Laser Beam Directed Energy Deposition Technique

“…Due to the high contact pressure (Hertzian contact ball-on-plate), this drop to more active potentials indicates that the passive layer was removed at the tribological contact alumina ball/metallic sample, which means that the wear track started to take shape. As mentioned by Dalmau and co-authors [52], during the early stage of a wear test, there is a material flow causing a fast increase in the worn surface.…”

In situ determinations of the wear surfaces, volumes and kinetics of repassivation: Contribution in the understanding of the tribocorrosion behaviour of a ferritic stainless steel in various pH

“…Above ∼400 sliding, the current densities decrease as a function of the reactivity of the surface in the electrolyte. In the linear regime of wear, the maximum contact pressure is located at the edges of the wear track whereas the contact pressure inside the wear track is closed to the yielding stress [36]. As a consequence, the current density is representative to the reactivity of the deformed surface (i.e., inside the contact) and the edges of the wear track freshly damaged.…”