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Effect of High-Temperature Oxidation on Phase Structure and Flexural Strength of Si3N4-SiC Ceramics
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Wei ZHOU1, Jun MA2, Xiaoqi GAO1, Huan Liu1, Zhihang SHAN1, Wanchun FENG2, 3, Boping ZHANG1
Journal of the Chinese Ceramic Society | 2022, 50(8) : 2104 - 2109
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Journal of the Chinese Ceramic Society | 2022, 50(8): 2104-2109
• Research Articles •
Effect of High-Temperature Oxidation on Phase Structure and Flexural Strength of Si3N4-SiC Ceramics
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Wei ZHOU1, Jun MA2, Xiaoqi GAO1, Huan Liu1, Zhihang SHAN1, Wanchun FENG2, 3, Boping ZHANG1
Affiliations
  • 1.School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • 2.Huludao Huaneng Industrial Ceramics Co., Ltd., Huludao 125000, Liaoning, China
  • 3.Beijing Ollie Tonglian Technology Co., Ltd., Beijing 100081, China

    • ZHOU Wei (1996-), male, Master candidate. E-mail:

About Author:

ZHOU Wei (1996-), male, Master candidate. E-mail:

Published: 2022-08-20 doi: 10.14062/j.issn.0454-5648.20220112
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Si3N4-SiC ceramics were prepared via reaction sintering with SiC, silicon powder and SiO2 as main raw materials, and the ceramics were oxidized at a high temperature. The structure and properties of ceramics before and after high-temperature oxidation were investigated. The results show that the main crystalline phases of the samples before high-temperature oxidation are SiC, α-Si3N4/β-Si3N4 and a small amount of silicon powder, Si2N2O and triclinic-SiO2, while the silicon powder disappears after high-temperature oxidation and forms tetragonal-SiO2. The mass fraction of β-Si3N4 remains constant, and the mass fraction of α-Si3N4 decreases from 11.3% before high-temperature oxidation to 6.8% after high-temperature oxidation, while the mass fraction of Si2N2O and SiO2 increases, indicating that α-Si3N4 can be decomposed into Si2N2O and SiO2 more easily than β-Si3N4. After high-temperature oxidation, the flexural strength of samples decreases from (68.55±6.36) MPa to (49.80±4.96) MPa mainly due to the decomposition of α-Si3N4 into Si2N2O and SiO2.

silicon nitride  /  silicon carbide  /  high-temperature oxidation  /  flexural strength
周炜, 马俊, 高小琦, 刘欢, 单帜航, 冯万春, 张波萍. 高温氧化对Si3N4结合SiC陶瓷相结构和抗折强度的影响. 硅酸盐学报, 2022 , 50 (8) : 2104 -2109 . DOI: 10.14062/j.issn.0454-5648.20220112
Wei ZHOU, Jun MA, Xiaoqi GAO, Huan Liu, Zhihang SHAN, Wanchun FENG, Boping ZHANG. Effect of High-Temperature Oxidation on Phase Structure and Flexural Strength of Si3N4-SiC Ceramics[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (8) : 2104 -2109 . DOI: 10.14062/j.issn.0454-5648.20220112
Appendix
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Year 2022 volume 50 Issue 8
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Article Info
doi: 10.14062/j.issn.0454-5648.20220112
  • Receive Date：2022-02-12
  • Online Date：2026-10-20
  • Published：2022-08-20
Article Data
Affiliations
History
  • Received：2022-02-12
  • Revised：2022-02-28
Funding
Affiliations
    1.School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
    2.Huludao Huaneng Industrial Ceramics Co., Ltd., Huludao 125000, Liaoning, China
    3.Beijing Ollie Tonglian Technology Co., Ltd., Beijing 100081, China

Corresponding:

MA Jun (1972-), male, Vice Chief Engineer; E-mail:
FENG Wanchun (1962-), male, Senior Engineer;
ZHANG Boping (1964-), female, Professor.
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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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