Abstract
The effect of Mo contents on the corrosion resistance of bulk metallic glasses Fe 71.2-xC 7.0Si 3.3B 5.5 P 8.7Cr 2.3Al 2.0Mo x fabricated using the industrial raw materials has been investigated in the 3.5%NaCl and 1N HCl solutions, respectively. The results show the corrosion resistance will be improved with the increase of Mo contents. Among the above alloys, Fe 64.7C 7.0Si 3.3B 5.5 P 8.7Cr 2.3Al 2.0Mo 6.5 exhibits the best corrosion resistance due to the lowest passivation current, the highest critical passivation potential and the lowest corrosion rate. The corrosion resistance will be enhanced with increase of Mo, which is mainly attributed to the following reasons: the formation of chemically and structurally homogeneous single-phase solid solution; the formation of Cr-rich passivating film on the surface of samples, while Mo addition further prevents the dissolution of Cr during passivity; the formation of MoO 3 and other complex passivating film; the enhancement of pitting corrosion resistance caused by the addition of Mo.
| Original language | English |
|---|---|
| Pages (from-to) | 145-148 |
| Number of pages | 4 |
| Journal | Zhuzao/Foundry |
| Volume | 59 |
| Issue number | 2 |
| State | Published - Feb 2010 |
Keywords
- Corrosion properties
- Fe-based bulk metallic glass
- Glass forming ability
- Pig iron