Corrosion behaviour of Terfenol-D
Saved in:
| Title: | Corrosion behaviour of Terfenol-D |
|---|---|
| Authors: | Sachdeva, Deepika1, Balasubramaniam, R. bala@iitk.ac.in |
| Source: | Corrosion Science. May2008, Vol. 50 Issue 5, p1340-1352. 13p. |
| Subjects: | Corrosion & anti-corrosives, Polarization (Electricity), Impedance spectroscopy, Weight loss, Chlorides |
| Abstract: | Abstract: The corrosion behaviour of pseudo-binary compound Tb0.3Dy0.7Fe1.92 (Terfenol-D) was studied in 3.5% NaCl and 0.01N Na2SO4 solutions using Tafel polarisation, linear polarisation, electrochemical impedance spectroscopy and weight loss techniques. Electrochemical testing revealed the adverse effect of chloride ions, as corrosion rates were higher in 3.5% NaCl solutions than in 0.01N Na2SO4 solutions. The effect of aeration was studied by conducting experiments in freely-aerated, deaerated and fully-aerated conditions. Absence of oxygen accelerated corrosion in chloride environment, due to increased hydrogen interaction in presence of destabilised surface films. The improved corrosion resistance in chloride-free environment was correlated with morphological features of the corroded surfaces. Micro-compositional analysis of the corrosion products revealed that the corrosion products were primarily rich in rare earth elements. A comparison of all experimental techniques showed that Tafel extrapolation and EIS techniques provided reliable estimates of corrosion rate. [Copyright &y& Elsevier] |
| Copyright of Corrosion Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
Be the first to leave a comment!
