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Crystallization and Thermal Shock Behaviors of SiO2-Al2O3-ZnO-CaO-based Glass with Added Different Contents of CeO2 at 900℃ |
FENG Min1, LIAO Yimin1, CHEN Minghui1( ), ZHU Shenglong2, WANG Fuhui1 |
1.Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang 110819, China 2.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China |
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Cite this article:
FENG Min, LIAO Yimin, CHEN Minghui, ZHU Shenglong, WANG Fuhui. Crystallization and Thermal Shock Behaviors of SiO2-Al2O3-ZnO-CaO-based Glass with Added Different Contents of CeO2 at 900℃. Chinese Journal of Materials Research, 2022, 36(2): 90-98.
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Abstract SiO2-Al2O3-ZnO-CaO enamels were prepared by adding 10%~20% (mass fraction, %) CeO2 particles with a diameter of 20~50 nm into SiO2-Al2O3-ZnO-CaO-ZrO2-TiO2 enamels, and the crystal evolution behavior and phase evolution at 900℃ were investigated by scanning electron microscopy (SEM)/ energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results show that: The addition of 20% CeO2 particles can inhibit the precipitation of needle-like ZrSiO4 and feather CaTiSiO5 crystals, With the increase of CeO2 particle addition level, this hindering effect is enhanced. CeO2 combines with ZrO2 in enamel to form solid solution can promote the precipitation of primary crystal CaZrTi2O7, while CaZrTi2O7 hardly transforms into ZrSiO4 with the extension of sintering time. Meanwhile, the consumption of Ca and Ti also inhibited the precipitation of CaTiSiO5 crystals during the formation of CaZrTi2O7 crystals. These results show that the addition of 20% CeO2 can make the enamel system maintain high stability and excellent thermal shock resistance at 900℃, and thus prolong the service life of the enamel.
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Received: 30 September 2021
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Fund: National Natural Science Foundation of China(51871051) |
About author: CHEN Minghui, Tel: (024)23904856, E-mail: mhchen@mail.neu.edu.cn
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