Abstract
A systematic study on the wettability and interactions between superalloy melts with various Re contents and Al2O3-based ceramic moulds was presented in this paper. It was found that the increase of Re content inhibited the interfacial reactions to some extent. With regard to the 0, 1.5 and 3Re alloys, a double reaction layer containing Al2O3 and HfO2 was formed at the interface, but the thickness of reaction layer decreased with the increase of Re content. However, only Al2O3 phase was detected at the interface when the content of Re was 6 wt%, and the interface reaction was the weakest and the thickness of reaction layer was the thinnest. The wetting angle of the alloy/ceramic system increased as the level of Re increased. Moreover, the formation of viscous sand at the interface mainly depended on the change of wetting angle of the system.
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Acknowledgements
This study was financial supported by the National Key R&D Program of China (No. 2017YFA0700704), the National Science and Technology Major Project (No. 2017-VI-0003-0073) and the National Natural Science Foundation of China (Nos. 51601192, 5161188 and 51701210).
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Zi, Y., Meng, J., Zhang, C. et al. Mechanisms of Rhenium on Wettability and Interactions Between Nickel-Base Superalloy Melt and Al2O3-Based Ceramic Material. Acta Metall. Sin. (Engl. Lett.) 33, 1021–1030 (2020). https://doi.org/10.1007/s40195-020-01030-2
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DOI: https://doi.org/10.1007/s40195-020-01030-2