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Effect of TiO2 on Thermal Shock Resistance and Slag Penetration Resistance of Magnesia
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Zhenzhen LI1, Yibiao XU1, Qinghu WANG1, Tianbin ZHU1, Yajie DAI1, Fen ZHOU2, Chao XU2
Journal of the Chinese Ceramic Society | 2023, 51(3) : 602 - 609
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Journal of the Chinese Ceramic Society | 2023, 51(3): 602-609
• Research Articles •
Effect of TiO2 on Thermal Shock Resistance and Slag Penetration Resistance of Magnesia
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Zhenzhen LI1, Yibiao XU1, Qinghu WANG1, Tianbin ZHU1, Yajie DAI1, Fen ZHOU2, Chao XU2
Affiliations
  • 1.The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
  • 2.Wugang Refractory Co. Ltd., Wuhan 430082, China

    • LI Zhenzhen (1997-), female, Master candidate. E-mail:

About Author:

LI Zhenzhen (1997-), female, Master candidate. E-mail:

Published: 2023-03-20 doi: 10.14062/j.issn.0454-5648.20220867
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To improve the resistance to hydration, thermal shock and slag penetration of magnesia, a magnesia based composite was prepared via adding TiO2 powder (i.e., 1% (in mass fraction), 2% and 3%) into a light burned magnesia powder. The effect of TiO2 content on the sintering behavior, microstructure and properties of the composite was investigated. The results show that free CaO and some MgO transform into CaTiO3 and Mg2TiO4 and the size of MgO grains increases as TiO2 addition increases, leading to an improvement in the hydration resistance. The formed CaTiO3 and Mg2TiO4 phases reduce the thermal expansion coefficient and induce the crack deflection as TiO2 content increases, therefore improving the thermal shock resistance of the specimens. Besides, as 1% TiO2 is added, the slag penetration resistance of the specimens is enhanced due to the increase in MgO grain size and the formation of high stable intergranular CaTiO3 phase. However, the further increasing TiO2 content reduces the slag penetration resistance due to the formation of low stable Mg2TiO4 phase at MgO grain boundaries.

magnesium oxide  /  free calcium oxide  /  titanium oxide  /  hydration resistance  /  thermal shock resistance  /  slag penetration resistance
李真真, 徐义彪, 王庆虎, 朱天彬, 戴亚洁, 周芬, 徐超. 氧化钛对镁砂抗热震性能及抗渣渗透性能的影响. 硅酸盐学报, 2023 , 51 (3) : 602 -609 . DOI: 10.14062/j.issn.0454-5648.20220867
Zhenzhen LI, Yibiao XU, Qinghu WANG, Tianbin ZHU, Yajie DAI, Fen ZHOU, Chao XU. Effect of TiO2 on Thermal Shock Resistance and Slag Penetration Resistance of Magnesia[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (3) : 602 -609 . DOI: 10.14062/j.issn.0454-5648.20220867
Appendix
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Year 2023 volume 51 Issue 3
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Article Info
doi: 10.14062/j.issn.0454-5648.20220867
  • Receive Date：2022-10-12
  • Online Date：2026-10-20
  • Published：2023-03-20
Article Data
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History
  • Received：2022-10-12
  • Revised：2022-10-28
Funding
Affiliations
    1.The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
    2.Wugang Refractory Co. Ltd., Wuhan 430082, China

Corresponding:

XU Yibiao (1986-), male, Ph.D., Associate Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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