Abstract
To further investigate the effects of isothermal heating temperature on the interfacial reactions between the Fe-Al-Ca alloy and the Al2O3-CaO-FeO oxide, two kinds of diffusion couples with different FeO contents in the oxide were prepared and then subjected to isothermal heating at different temperatures in the range of 873 K to 1473 K for 10 h, 30 h, and 50 h. With increasing temperature of isothermal heating, in the case of 0.5 mass% FeO, fine Al2O3 particles first precipitated in the alloy near the alloy–oxide interface, and then CaO·Al2O3 branch inclusions appeared and increased in number, while for the case of 3.0 mass% FeO, Al2O3 particles were the only reaction product in the particle precipitation zone (PPZ). An improved kinetics model for predicting PPZ width was proposed and verified by experimental results.
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Acknowledgements
This work was supported by grants from the National Natural Science Foundation of China (Nos. 51604201 and 51774217) and the scholarship under the International Postdoctoral Exchange Fellowship Program 2017 by the Office of China Postdoctoral Council.
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Liu, C., Zhang, H., Liu, X. et al. Effect of Isothermal Heating Temperature on the Interfacial Reactions Between Fe-Al-Ca Alloy and Al2O3-CaO-FeO Oxide. JOM 71, 1793–1802 (2019). https://doi.org/10.1007/s11837-019-03384-0
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DOI: https://doi.org/10.1007/s11837-019-03384-0