Abstract
The effects of micro - and nano-CaO additive on the sinterability of Y-doped BaZrO3 and its interface reaction with titanium alloys were investigated. The 10 mol% micro - and nano-CaO is doped into BaZr0.97Y0.03O3 (BZY), respectively. The sinterability of BZY with micro - and nano-CaO was investigated by density analyzer, SEM and XRD . The relative density of BZY pellets with micro - and nano-CaO addition improved from 88% to 97.5% and 98% at 1750 °C for 6 h, respectively. XRD and SEM (BSE) show no secondary phase in the two sintered ceramics, which indicates that a single phase of cubic perovskite-type structure of Ca-modified BZY can be obtained. After melted titanium alloys , the erosion layer is 70 μm with nano-CaO addition, while a 310 μm erosion layer with micro -CaO addition. This shows that nano-CaO can be used as an appropriate sintering aid and can prevent the Y-doped BaZrO3 refractory from erosion.
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Acknowledgements
The authors thank the National Natural Science Foundation of China (No.: 51574164, U1760109); Basic Major Research Program of Science and Technology Commission Foundation of Shanghai (No.: 14JC1491400). China Postdoctoral Science Foundation funded project (2018M632081).
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Kang, J., Chen, G., Lan, B., Wang, S., Lu, X., Li, C. (2019). Sinterability of Y-Doped BaZrO3 with Micro- and Nano-CaO Additives and Its Interaction with Titanium Alloy. In: Li, B., et al. Characterization of Minerals, Metals, and Materials 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05749-7_7
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