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- Title
Improving Oxidation Resistance of Low Fe-Si Alloys by Preheating Treatment.
- Authors
Li, C. L.; Ma, W.; Liu, Z. H.; Freiberg, K. E.; Liu, G. J.; Lang, X. Y.; Lippmann, S.; Zhu, Y. F.; Jiang, Q.
- Abstract
In this work, attempts have been made to improve the oxidation resistance of Fe-Si alloys with 0.5, 1.0 and 2.0 mass pct Si by a preheating treatment, which was carried out at 1073 K for 24 hours in high purity hydrogen atmosphere. Compared with pure Fe and untreated Fe-Si alloys, the oxidation resistance of the preheated Fe-Si alloys at 673 K in O2 is drastically increased, in the case of 2 mass pct Si by two orders of magnitude. The improvement is attributed to a uniform, dense and continuous 25 nm pure SiO2 layer formed on the alloy surface during the preheating treatment in hydrogen atmosphere hindering the diffusion of Fe and O.
- Subjects
HYDROGEN; ATMOSPHERE
- Publication
Metallurgical & Materials Transactions. Part A, 2023, Vol 54, Issue 8, p3261
- ISSN
1073-5623
- Publication type
Article
- DOI
10.1007/s11661-023-07095-9