DataVXphysica status solidi (a)Paper
journal article·2018-08Open access

On the Electropolishing Mechanism of Nickel Titanium in Methanolic Sulfuric acid − An Electrochemical Impedance Study

Koji Fushimi, Lakshman Neelakantan, Gunther Eggeler, Achim Walter Hassel

physica status solidi (a)· Volume 215· Issue 15
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Source abstract

Abstract

Electropolishing of NiTi shape memory alloys is possible in methanolic 3 m H2SO4. The electro‐dissolution behavior of NiTi in methanolic 3 m H2SO4 is ascertained in terms of Nyquist plots using electrochemical impedance spectroscopy (EIS) under limiting current flow (mass transfer control) condition. The electro‐dissolution behavior is studied under convective conditions using a rotating disc electrode. The influence of changes in rotation rate, applied potential, and temperature are determined. This study demonstrates that electro‐dissolution under mass transfer condition follows a compact salt‐film mechanism. In order to quantitatively characterize the salt film formed during electropolishing, EIS is performed under stationary conditions. The increase in applied voltage causes an increase in polarization resistance and decrease in capacitance of the interface film.
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Research context

Metals & alloys

OpenAlex topics: Shape Memory Alloy Transformations · Advanced Memory and Neural Computing · Corrosion Behavior and Inhibition

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Faculty of Engineering Hokkaido University N13W8, Kita‐ku Sapporo 060‐8628 Japan

Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras (IITM) Chennai‐600 036 India

Institut für Werkstoffe Ruhr‐Universität Bochum 44801 Bochum Germany

Institute for Chemical Technology of Inorganic Materials Johannes Kepler University Linz Altenberger Str. 69 4040 Linz Austria

Competence Centre for Electrochemical Surface Technology Viktor‐Kaplan‐Str. 1, Wiener Neustadt and Altenberger Str. 69 4040 Linz Austria

Funding

Deutsche Forschungsgemeinschaft · Max-Planck-Gesellschaft

References (27)

Show source-provided references
1. 10.1016/S0921-5093(99)00294-410.1016/S0921-5093(99)00294-4 ↗
2. 10.1080/1364570041002027810.1080/13645700410020278 ↗
3. 10.1002/mawe.20040075910.1002/mawe.200400759 ↗
4. 10.1002/pssa.20098331210.1002/pssa.200983312 ↗
5. 10.1016/j.electacta.2009.11.09710.1016/j.electacta.2009.11.097 ↗
6. 10.1016/j.msec.2008.03.00910.1016/j.msec.2008.03.009 ↗
7. 10.1007/s12206-011-0209-210.1007/s12206-011-0209-2 ↗
8. 10.1002/sia.617810.1002/sia.6178 ↗
9. 10.1016/0013-4686(87)87001-910.1016/0013-4686(87)87001-9 ↗
10. 10.1016/j.electacta.2006.07.03010.1016/j.electacta.2006.07.030 ↗
11. 10.1016/j.electacta.2007.08.00710.1016/j.electacta.2007.08.007 ↗
12. 10.1149/1.302588910.1149/1.3025889 ↗
13. 10.1016/j.electacta.2011.05.04910.1016/j.electacta.2011.05.049 ↗
14. 10.1149/1.205474110.1149/1.2054741 ↗
15. 10.1016/0013-4686(94)00287-B10.1016/0013-4686(94)00287-B ↗
16. 10.1016/0010-938X(94)90023-X10.1016/0010-938X(94)90023-X ↗
17. 10.1016/S0013-4686(99)00056-010.1016/S0013-4686(99)00056-0 ↗
18. 10.1149/1.183864410.1149/1.1838644 ↗
19. 10.1002/978352764666110.1002/9783527646661 ↗
20. 10.1149/1.242400310.1149/1.2424003 ↗
21. 10.1016/j.elecom.2003.12.00210.1016/j.elecom.2003.12.002 ↗
22. 10.1016/S1875-5372(12)60049-610.1016/S1875-5372(12)60049-6 ↗
23. 10.1016/j.electacta.2016.01.21810.1016/j.electacta.2016.01.218 ↗
24. 10.1149/1.329894810.1149/1.3298948 ↗
25. 10.1177/088532821141602310.1177/0885328211416023 ↗
26. 10.1016/j.corsci.2008.12.01810.1016/j.corsci.2008.12.018 ↗
27. 10.1016/j.corsci.2008.01.02210.1016/j.corsci.2008.01.022 ↗