Electropolishing of a Nickel–Titanium–Copper Shape Memory Alloy in Methanolic Sulfuric Acid
- 1 January 2009
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 12 (2), C1-C4
- https://doi.org/10.1149/1.3025889
Abstract
Electropolishing of NiTiCu shape memory alloy was performed in methanolic sulfuric acid as a surface processing method. The current investigation, using a rotating disk electrode, aims at identifying appropriate electropolishing conditions for this alloy based on understanding the underlying mechanism. The influence of temperature, rotation rate, and sulfuric acid concentration ( or ) was quantified. Electropolishing in methanolic is solely mass-transport-controlled, while a mixed control is found for the methanolic . This behavior is different from that of the binary NiTi alloy. From the electrochemical perspective, a methanolic solution is more suitable for electropolishing NiTiCu. The activation energy for electrodissolution is .Keywords
This publication has 15 references indexed in Scilit:
- Critical overview of Nitinol surfaces and their modifications for medical applicationsActa Biomaterialia, 2008
- Rotating disc electrode study of the electropolishing mechanism of NiTi in methanolic sulfuric acidElectrochimica Acta, 2007
- A new concept of a linear smart actuatorSensors and Actuators A: Physical, 2007
- High Voltage Pulse Anodization of a NiTi Shape Memory AlloyJournal of the Electrochemical Society, 2007
- Electropolishing of NiTi shape memory alloys in methanolic H2SO4Electrochimica Acta, 2006
- Characterisation of surface oxidation of nickel–titanium alloy by ion-beam and electrochemical techniquesElectrochimica Acta, 2004
- Surface treatment of NiTi for medical applicationsMinimally Invasive Therapy & Allied Technologies, 2004
- On the transformation behaviour, mechanical properties and biocompatibility of two NiTi-based shape memory alloys:: NiTi42 and NiTi42Cu7Biomaterials, 2001
- The Mechanism of Electropolishing of Titanium in Methanol‐Sulfuric Acid ElectrolytesJournal of the Electrochemical Society, 1998
- Fundamental aspects of electropolishingElectrochimica Acta, 1987