Abstract
The high-temperature corrosion behavior of four iron aluminides containing Fe-18Al (in at.%) and three Fe-18Al-5M alloys (where M was Cr, Mn, or Mo) was studied over the temperature range of 700-900°C in a H2/H2S/H2O atmosphere. The corrosion kinetics followed the parabolic rate law in all cases, regardless of temperature and alloy composition. The parabolic rate constants decreased with decreasing temperature, and the addition of ternary elements resulted in various decreases in the corrosion rate compared with Fe-18Al. It was found that Mo was effective to improve the corrosion resistance at T ≤ 800°C while Cr had a better improvement at 900°C. The scales formed on all iron aluminides were strongly dependent on temperature and ternary addition. © 1997 Elsevier Science S.A.
Original language | English |
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Pages (from-to) | 859-870 |
Journal | Materials Science and Engineering A |
Volume | 239-240 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - Dec 1997 |
Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Research Keywords
- Cr
- High-temperature corrosion
- Iron aluminides
- Mn
- Mo