Corrosion of Nitinol

Nitinol stent
Nitinol stent

Nitinol is a shape-memory superelastic alloy widely used for various kinds of surgery. In particular, nitinol is one of the best materials for the production of intracoronary and brain arterial stents. The reliability of such a stent is a matter of life for a patient, because malfunctions of almost any kind may result in lethal damages.

About the measurement of Tafel slopes

Submitted by alexL on Mon, 12/08/2014 - 09:04

The Tafel plot which you can see in the picture below, is the most ideal polarization curve that can be. It was built with the data points computed by the Butler-Volmer equation for the following parameters: T = 298K, nc = na = 2 electrons, α = 0.5, io = 10-11 A. Any real polarization curve is 'worse' from the point of view of Tafel analysis.

Tafel plot