Home Journals Articles Updates About
CN
image
收藏切换
Effect of High-Entropy Boride Content on Microstructure and Mechanical Properties of Silicon Nitride Ceramics
收藏切换
Ruilin LIN, Qiankun GU, Sichun LUO, Yan ZHANG, Weiming GUO, Huatai LIN
Journal of the Chinese Ceramic Society | 2022, 50(6) : 1499 - 1503
Less
收藏切换
Journal of the Chinese Ceramic Society | 2022, 50(6): 1499-1503
• Research Articles •
Effect of High-Entropy Boride Content on Microstructure and Mechanical Properties of Silicon Nitride Ceramics
Full
Ruilin LIN, Qiankun GU, Sichun LUO, Yan ZHANG, Weiming GUO, Huatai LIN
Affiliations
  • School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China

    • LIN Ruilin (1997-), male, Master candidate. E-mail:

About Author:

LIN Ruilin (1997-), male, Master candidate. E-mail:

Published: 2022-06-20 doi: 10.14062/j.issn.0454-5648.20210901
Outline
收藏切换

Silicon nitride (Si3N4) ceramics have a wide potential application in industrial processes, but high fracture toughness and hardness are always difficult to be handled, thus affecting the application of Si3N4 ceramics. In this paper, silicon nitride ceramics were fabricated via spark plasma sintering at 1 600 ℃ with high-entropy boride phase (Hf0.2Zr0.2Ta0.2Cr0.2Ti0.2)B2 as sintering aids. The effect of (Hf0.2Zr0.2Ta0.2Cr0.2Ti0.2)B2 on the phase assemblage, densification, microstructure and mechanical properties was investigated. Compared with (Hf0.2Zr0.2Ta0.2Cr0.2Ti0.2)B2-free Si3N4 ceramic, the addition of only 1.0% (in volume fraction) (Hf0.2Zr0.2Ta0.2Cr0.2Ti0.2)B2 in the ceramic can increase the mass fraction of β-Si3N4 from 38% to 53% at 1 600 ℃, showing a bimodal microstructure. As a consequence, the fracture toughness of Si3N4-based ceramic increases from (5.4±0.3) MPa·m1/2 to (6.9±0.2) MPa·m1/2, and the hardness maintains (20.2±0.2) GPa. The relative density of Si3N4-based ceramics decreases and the phase transformation enhances with increasing the high-entropy boride fraction to 2.5% and 5.0%, thus leading to a decrease in the hardness.

silicon nitride ceramic  /  high-entropy boride  /  phase assemblage  /  microstructure  /  mechanical properties
林锐霖, 顾乾坤, 罗嗣春, 张岩, 郭伟明, 林华泰. 高熵硼化物含量对Si3N4陶瓷显微结构与性能的影响. 硅酸盐学报, 2022 , 50 (6) : 1499 -1503 . DOI: 10.14062/j.issn.0454-5648.20210901
Ruilin LIN, Qiankun GU, Sichun LUO, Yan ZHANG, Weiming GUO, Huatai LIN. Effect of High-Entropy Boride Content on Microstructure and Mechanical Properties of Silicon Nitride Ceramics[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (6) : 1499 -1503 . DOI: 10.14062/j.issn.0454-5648.20210901
Appendix
Less
Year 2022 volume 50 Issue 6
13
0
Cite this Article
BibTeX
Article Info
doi: 10.14062/j.issn.0454-5648.20210901
  • Receive Date：2021-10-21
  • Online Date：2026-10-22
  • Published：2022-06-20
Article Data
Affiliations
History
  • Received：2021-10-21
  • Revised：2022-01-06
Funding
Affiliations
    School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China

Corresponding:

GUO Weiming (1982-), male, Ph.D., Professor. E-mail:
References
Share
https://castjournals.cast.org.cn/joweb/gsyxb/EN/10.14062/j.issn.0454-5648.20210901
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
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
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House