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 (3 or 5 M H2SO4) was quantified. Electropolishing in methanolic 5 M H2SO4 is solely mass-transport-controlled, while a mixed control is found for the methanolic 3 M H2SO4. This behavior is different from that of the binary NiTi alloy. From the electrochemical perspective, a methanolic 5 M H2SO4 solution is more suitable for electropolishing NiTiCu. The activation energy for electrodissolution is 21.5 kJ mol-1.
| Original language | English |
|---|---|
| Pages (from-to) | C1-C4 |
| Number of pages | 4 |
| Journal | Electrochemical and Solid-State Letters |
| Volume | 12 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2009 |
Fields of science
- 104005 Electrochemistry
- 104006 Solid state chemistry
- 104014 Surface chemistry
- 104017 Physical chemistry
- 105113 Crystallography
- 105116 Mineralogy
- 503013 Subject didactics of natural sciences
- 204 Chemical Process Engineering
- 204001 Inorganic chemical technology
- 205016 Materials testing
- 210006 Nanotechnology
- 211104 Metallurgy
JKU Focus areas
- Engineering and Natural Sciences (in general)