Enhanced bonding stability of Fe oxide layer on low carbon steel via low-pressure air oxidation
The oxidation behavior of low carbon steel (SS400) was investigated at 500 °C under different air pressures: 1 atm, 1/10,000 atm, and 1/50,000 atm. The results showed that the oxide growth rate at 1/10,000 atm was higher than at atmospheric pressure, primarily due to the reduced formation of dense F...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425018630 |
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| Summary: | The oxidation behavior of low carbon steel (SS400) was investigated at 500 °C under different air pressures: 1 atm, 1/10,000 atm, and 1/50,000 atm. The results showed that the oxide growth rate at 1/10,000 atm was higher than at atmospheric pressure, primarily due to the reduced formation of dense Fe2O3 on the oxide surface. Oxide layers formed at 1/10,000 atm and 1/50,000 atm exhibited better adhesion to the steel substrate, as they featured larger oxide grains and increased contact area with the steel, leading to a greater number of chemical bonds at the oxide-steel interface. Although Kirkendall pores were more prominent at lower air pressures, they did not significantly affect the bonding strength between the oxide and the steel. |
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| ISSN: | 2238-7854 |