Potentiodynamic Polarization and Electrochemical Impedance Spectroscopy Used for Prediction of Nitinol Stent’s Lifetime

Josef Hlinka; Stanislav Lasek; Jan Branzovsky

doi:10.4028/www.scientific.net/KEM.741.50

Paper Titles

Fracture Toughness of Massively Transformed and Subsequently Heat Treated TiAl Intermetallic Compound
p.25

Solid-State Diffusion Bonding of Titanium by Using Metal Salt Coated Aluminum Sheet
p.31

Mechanical Stability and Deformation-Induced Transformation of Retained Austenite in TRIP Steels at Low Temperatures
p.36

Influence of Chloride for SCC Susceptibility on 15Cr Stainless Steel at High Temperatures under CO₂ Environment
p.42

Potentiodynamic Polarization and Electrochemical Impedance Spectroscopy Used for Prediction of Nitinol Stent’s Lifetime
p.50

Analysis on Critical CTOD of Long-Term Used Penstock
p.57

Combination Criterion for Multiple Laminar Flaws in Steel Components
p.63

Dynamic Tensile Testing of High Strength Armor Steel Plates
p.70

A Review of Subsurface Crack Initiation Models in High-Cycle Fatigue for Titanium Alloys
p.76

HomeKey Engineering MaterialsKey Engineering Materials Vol. 741Potentiodynamic Polarization and Electrochemical...

Potentiodynamic Polarization and Electrochemical Impedance Spectroscopy Used for Prediction of Nitinol Stent’s Lifetime

Abstract:

This paper is focused on prediction of nitinol stents lifetime. Stents have been tested before and after mechanical loading. Corrosion tests of mechanically loaded specimens indicated impairment of corrosion resistance and SEM observation confirmed presence of micro cracks in surface oxide layer created during heat treatment. Electrochemical impedance spectroscopy and potentiodynamic polarization in physiological solution was used for these particular experiments. Corrosion rate and other parameters have been used for calculation of released nickel ions weight and prediction of application lifetime.

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Periodical:

Key Engineering Materials (Volume 741)

Pages:

50-56

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.741.50

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Online since:

June 2017

Authors:

Josef Hlinka*, Stanislav Lasek, Jan Branzovsky

Keywords:

Biomaterial, EIS Method, Nitinol, Potentiodynamic Polarization, Stent

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* - Corresponding Author

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