| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 186332 | Electrochimica Acta | 2014 | 6 Pages |
•A new approach using a sine-wave modulation of the velocity of rotation of a pin-on-disc tribometer is presented.•The general mathematical background of this new modulation technique is derived.•The kinetics of film healing can be extracted from the complex transfer function current/rotation speed.•Experiments on the repassivation of 316L stainless steel were performed and discussed.
On the basis of a classical model of triboelectrochemistry, a new approach is proposed based on an impedance ratio of a mechanical perturbation and an electrochemical response. Theoretical derivation, experimental setup and application to a passive stainless steel in a borate solution are presented. Transient characteristics yielded by the technique, associated to a permanent tribological regime, are found to obey a two-time-constant law. They are discussed and compared to the global repassivation transients of the material after switching off the abrasive friction.
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