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Influence of Glass Ceramic Coating on Alkali Resistance of Lightweight Mullite-SiC Composites
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Yan LIU, Shaobai SANG, Qi WU, Yuzhou MA, Yawei LI, Tianbin ZHU
Journal of the Chinese Ceramic Society | 2021, 49(12) : 2751 - 2759
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Journal of the Chinese Ceramic Society | 2021, 49(12): 2751-2759
• Research Article •
Influence of Glass Ceramic Coating on Alkali Resistance of Lightweight Mullite-SiC Composites
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Yan LIU, Shaobai SANG, Qi WU, Yuzhou MA, Yawei LI, Tianbin ZHU
Affiliations
  • Wuhan University of Science and Technology, The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, National-provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology, Wuhan 430081, China
  • LIU Yan (1995-), female, Master candidate. E-mail:

About Author:

LIU Yan (1995-), female, Master candidate. E-mail:

Published: 2021-12-20 doi: 10.14062/j.issn.0454-5648.20210053
Outline
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Three kinds of mullite-SiC materials were prepared with homogenized bauxite aggregate, porous mullite aggregate and glass ceramic coated porous mullite aggregate, respectively. The physical properties of the mullite-SiC materials sintered at 1 500℃ were investigated. The structure and properties of the materials after alkali vapor attack at 1 000℃ were analyzed. The influence of glass ceramic coating on the alkali vapor attack resistance of material was revealed by thermodynamics analysis. The results show that the strength of the lightweight mullite-SiC material is similar to that of the conventional mullite-SiC materials. However, the lightweight mullite-SiC material has a poor alkali vapor attack resistance. A liquid phase formed in glass ceramic coating at a high temperature promotes sintering, leading to a stronger bonding between aggregates and matrix and an increase in the strength for coated lightweight mullite-SiC materials. Moreover, the glass ceramic coating can absorb a part of K vapor and generate a liquid phase, thus protecting the porous aggregate from alkali vapor. The alkali vapor attack resistance of the lightweight mullite-SiC material is better than that of the conventional mullite-silicon carbide material.

glass ceramic coating  /  porous mullite aggregate  /  alkali resistance  /  mullite-silicon carbide matrial
刘燕, 桑绍柏, 武奇, 马宇洲, 李亚伟, 朱天彬. 玻璃陶瓷涂层对轻量莫来石-碳化硅材料抗碱侵蚀性能的影响. 硅酸盐学报, 2021 , 49 (12) : 2751 -2759 . DOI: 10.14062/j.issn.0454-5648.20210053
Yan LIU, Shaobai SANG, Qi WU, Yuzhou MA, Yawei LI, Tianbin ZHU. Influence of Glass Ceramic Coating on Alkali Resistance of Lightweight Mullite-SiC Composites[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (12) : 2751 -2759 . DOI: 10.14062/j.issn.0454-5648.20210053
Year 2021 volume 49 Issue 12
33
7
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Article Info
doi: 10.14062/j.issn.0454-5648.20210053
  • Receive Date:2021-01-18
  • Online Date:2026-10-30
  • Published:2021-12-20
Article Data
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History
  • Received:2021-01-18
  • Revised:2021-04-13
Funding
Affiliations
    Wuhan University of Science and Technology, The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, National-provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology, Wuhan 430081, China

Corresponding:

SANG Shaobai (1979-), male, Ph.D., Porfessor. 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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