Abstract
The corrosion behavior of porous Pd42.5Cu30Ni 7.5P20 bulk metallic glasses with various porosities in Hanks' solution was investigated. The results revealed that all bulk metallic glasses exhibited similar corrosion behavior. The bulk metallic glasses with the porosity of 0 and 18% were spontaneously passivated with passive current densities between 10-2 and 10-1 A/m2 in anodic polarization curves. The bulk metallic glasses with 40 and 55% porosity exhibited an anodic process with the current density increasing gradually. As the anodic potential increasing, no obvious passivity breakdown occurred in the anodic polarization process. The polarization resistance decreased with the increasing of the porosity from 0 to 55%. The breakdown potential of the passive film for the bulk metallic glass with 55% porosity was about 100mV lower than that of the 0% porosity Pd42.5Cu30Ni7.5P 20 bulk metallic glass.
| Original language | English |
|---|---|
| Pages (from-to) | 1347-1350 |
| Number of pages | 4 |
| Journal | Materials Transactions |
| Volume | 54 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2013 Sep 3 |
Keywords
- Electrochemical properties
- Palladium-based bulk metallic glasses
- Porosity
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering