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Preparation of Core-Shell SiC@C Powder via Modified Molten Salt Shielding Technique
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Li ZHAO1, Yicheng YIN1, Niu YAO1, Haoxuan MA1, Shaowei ZHANG2, Guowei LIU3, Quanli JIA1
Journal of the Chinese Ceramic Society | 2023, 51(3) : 635 - 640
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Journal of the Chinese Ceramic Society | 2023, 51(3): 635-640
• Research Articles •
Preparation of Core-Shell SiC@C Powder via Modified Molten Salt Shielding Technique
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Li ZHAO1, Yicheng YIN1, Niu YAO1, Haoxuan MA1, Shaowei ZHANG2, Guowei LIU3, Quanli JIA1
Affiliations
  • 1.College of Materials Science and Engineering, Henan Key Laboratory of High Temperature Functional Materials, Zhengzhou University, Zhengzhou 450052, China
  • 2.College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK
  • 3.Puyang Refractories Group Co., Ltd., Puyang 457100, Henan, China

    • ZHAO Li (1998-), female, Master candidate. E-mail:

About Author:

ZHAO Li (1998-), female, Master candidate. E-mail:

Published: 2023-03-20 doi: 10.14062/j.issn.0454-5648.20220871
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The application of graphite flakes in refractory castables was inhibited by their poor water-wettability, and carbides modified graphite was considered as the best way to solve this problem. Aimed to solve the high cost, difficulty in scalable fabrication, and unclear synthesis mechanism in the preparation process of carbide-modified graphite, a core-shell SiC@graphite powder was fabricated in air by a modified molten salt shielding technique in this work. Influence of encapsulation method on the phase composition and microstructure of as-obtained SiC@C powders was investigated. The results show that SiC@C powders can be fabricated via modified molten salt shielding method. The as-prepared SiC@C powders possess better water-wettability, dispersibility and oxidation resistance. The microstructural characteristic of SiC@C powders is indicated a core-shell structure, SiC layer is formed on graphite flake. The template-growth mechanism is dominant in molten salt synthesis process, i.e., a small amount of Si is dissolved in the molten salt, diffused onto the graphite surfaces via a molten salt medium, and then reacted to form in-situ SiC coating layer on graphite flake, which is controlled due to the external diffusion of element Si.

silicon carbide coated graphite flake  /  modified molten salt shielding route  /  core-shell  /  water-wettability  /  aluminium oxide-magnesium oxide castables
赵莉, 尹艺程, 姚妞, 马浩轩, 张少伟, 刘国威, 贾全利. 改进熔盐隔离法制备核壳结构SiC@C粉体及其合成机制. 硅酸盐学报, 2023 , 51 (3) : 635 -640 . DOI: 10.14062/j.issn.0454-5648.20220871
Li ZHAO, Yicheng YIN, Niu YAO, Haoxuan MA, Shaowei ZHANG, Guowei LIU, Quanli JIA. Preparation of Core-Shell SiC@C Powder via Modified Molten Salt Shielding Technique[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (3) : 635 -640 . DOI: 10.14062/j.issn.0454-5648.20220871
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Year 2023 volume 51 Issue 3
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Article Info
doi: 10.14062/j.issn.0454-5648.20220871
  • Receive Date：2022-10-14
  • Online Date：2026-10-20
  • Published：2023-03-20
Article Data
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History
  • Received：2022-10-14
  • Revised：2022-11-05
Funding
Affiliations
    1.College of Materials Science and Engineering, Henan Key Laboratory of High Temperature Functional Materials, Zhengzhou University, Zhengzhou 450052, China
    2.College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK
    3.Puyang Refractories Group Co., Ltd., Puyang 457100, Henan, China

Corresponding:

JIA Qianli (1972-), male, Ph.D., 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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