Issue |
Metall. Res. Technol.
Volume 115, Number 5, 2018
|
|
---|---|---|
Article Number | 512 | |
Number of page(s) | 9 | |
DOI | https://doi.org/10.1051/metal/2018079 | |
Published online | 09 November 2018 |
Regular Article
Reaction between MgO-SiO2 refractory material and Fe-Al alloy
School of Metallurgical and Ecological Engineering, University of Science and Technology,
100083
Beijing, PR China
* e-mail: wenyang@ustb.edu.cn
Received:
29
June
2018
Accepted:
31
July
2018
The interaction between molten Fe-Al alloy containing 5.1 wt.% aluminium and MgO-SiO2-based refractory was investigated. In high-frequency induction furnace at 1550 °C refractory samples were immersed in liquid alloy for 1 min, 2 min, 10 min, 20 min, 30 min and 60 min. Scanning electron microscope was employed to investigate phases at the interface and inclusions in the Fe-Al alloy. Forsterite phase in refractory was transformed to MgO·Al2O3 spinel, owing to the reduction of iron oxide and silica in forsterite by aluminium in the Fe-Al alloy at the interface. The interface layer separated locally from the refractory material and formed cluster and single particles in the Fe-Al alloy. In view on the reaction rate, the disintegration of the refractory material increased the reaction area but interfered with increasing thickness of the spinel layer. The dissolution rate of silica into the molten alloy decreased with increasing the reaction time because of the slowed down transport of aluminium diffusing through increasing spinel layer became the rate controlling step.
Key words: Fe-Al alloy / interaction / interface layer / dissolution / MgO-SiO2-based refractory
© EDP Sciences, 2018
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.