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

Fushimi Koji | Zendy; Neelakantan Lakshman | Zendy; Eggeler Gunther | Zendy; Hassel Achim Walter | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

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

Author(s) -

Fushimi Koji,

Neelakantan Lakshman,

Eggeler Gunther,

Hassel Achim Walter

Publication year - 2018

Publication title -

physica status solidi (a)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.532

H-Index - 104

eISSN - 1862-6319

pISSN - 1862-6300

DOI - 10.1002/pssa.201800011

Subject(s) - electropolishing , dissolution , nyquist plot , dielectric spectroscopy , polarization (electrochemistry) , electrochemistry , mass transfer , materials science , electrode , capacitance , chemistry , analytical chemistry (journal) , metallurgy , electrolyte , chromatography

Electropolishing of NiTi shape memory alloys is possible in methanolic 3 m H 2 SO 4 . The electro‐dissolution behavior of NiTi in methanolic 3 m H 2 SO 4 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.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research