Abstract
Ni-based alloys with Al, Fe, Ti, and Nb additions were designed for the molten-glass environment and the oxidation behavior was evaluated by static oxidation in air at 1,050°C for 20 h. The oxidation kinetics results indicate that the increase in iron content from 6 wt% to 20 wt% improved the oxidation rate of Ni-based alloys and promoted the transition from external oxidation to internal oxidation. The introduction of 5 wt% Al into Ni-based alloys retarded such a detrimental effect of iron by the formation of external alumina. The effect of alloying elements on the oxidation process is discussed based on the kinetics and morphology results.
| Original language | English |
|---|---|
| Pages (from-to) | 247-255 |
| Number of pages | 9 |
| Journal | Corrosion |
| Volume | 73 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2017 Mar |
| Externally published | Yes |
Keywords
- Alloying addition
- Ni alloys
- Oxidation kinetics
- Scanning electron microscopy
- Thermogravity
- X-ray diffraction
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Materials Science(all)