| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1469155 | Corrosion Science | 2013 | 6 Pages |
•Selective dissolution of Zr2Ni amorphous and nanocrystalline alloys.•Proved surface controlled selective dissolution process.•Improved electrocatalytic activity for HER of dealloyed Zr2Ni alloys.
Rapidly quenched Zr2Ni amorphous and nanocrystalline ribbons were subjected to electrochemical selective dissolution. The porous structure of the dealloyed materials showed a dependence on the alloy microstructure. The etching takes place with constant rate in three dimensions, indicating a surface controlled dissolution process. The etching rate of the amorphous alloy was found to be lower than for the nanocrystalline material. Partial crystallization of the de-alloyed amorphous ribbon has been observed. The electrocatalytic activity for Hydrogen evolution reaction of the selectively dissolved amorphous and nanocrystalline ribbons was found to be improved compared to the as-cast alloys.
