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In-Situ Formation of TiB2 in B4C Ceramics and Its Strengthening Mechanism on Mechanical Properties
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Wankai YAO1, Junbing YAN2, Xiangcheng LI1, Ping'an CHEN1, Yingli ZHU1, Boquan ZHU1
Journal of the Chinese Ceramic Society | 2022, 50(9) : 2414 - 2421
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Journal of the Chinese Ceramic Society | 2022, 50(9): 2414-2421
• Research Articles •
In-Situ Formation of TiB2 in B4C Ceramics and Its Strengthening Mechanism on Mechanical Properties
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Wankai YAO1, Junbing YAN2, Xiangcheng LI1, Ping'an CHEN1, Yingli ZHU1, Boquan ZHU1
Affiliations
  • 1.The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
  • 2.Wuhan Xinxin Semiconductor Manufacturing Co., Ltd, Wuhan 430223, China

    • YAO Wankai (1997-), male, Master candidate. E-mail:

About Author:

YAO Wankai (1997-), male, Master candidate. E-mail:

Published: 2022-09-20 doi: 10.14062/j.issn.0454-5648.20220291
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To improve the mechanical properties of B4C ceramics, TiB2 was generated in-situ in B4C ceramics by a reaction sintering method with TiO2 as a sintering aid to prepare dense B4C ceramics, and the enhancement mechanism of its mechanical properties was analyzed. The results show that the density and flexural strength of B4C firstly increase and then decrease and the fracture toughness increases with the increase of TiO2 addition. The density of B4C ceramics reaches 99.6% when the TiO2 addition is 5% (in mass fraction) and the sintering temperature is 1 700 ℃. The optimum overall performance of B4C ceramics (i.e., the Vickers hardness of 36.0 GPa, the fracture toughness of 4.38 MPa·m1/2, the bending strength of 405 MPa) can be obtained when the amount of TiO2 added is 15%. The in-situ TiB2 inhibits the growth of B4C grains, eliminates the stress at the crack tip, deflects and bifurcates the crack, and plays a role in grain refinement strengthening and toughening of B4C ceramics.

spark plasma sintering  /  boron carbide  /  titanium diboride  /  mechanical properties
姚万凯, 鄢俊兵, 李享成, 陈平安, 朱颖丽, 朱伯铨. B4C陶瓷中原位生成TiB2及其对力学性能的强化机制. 硅酸盐学报, 2022 , 50 (9) : 2414 -2421 . DOI: 10.14062/j.issn.0454-5648.20220291
Wankai YAO, Junbing YAN, Xiangcheng LI, Ping'an CHEN, Yingli ZHU, Boquan ZHU. In-Situ Formation of TiB2 in B4C Ceramics and Its Strengthening Mechanism on Mechanical Properties[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (9) : 2414 -2421 . DOI: 10.14062/j.issn.0454-5648.20220291
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Year 2022 volume 50 Issue 9
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Article Info
doi: 10.14062/j.issn.0454-5648.20220291
  • Receive Date：2022-04-14
  • Online Date：2026-10-20
  • Published：2022-09-20
Article Data
Affiliations
History
  • Received：2022-04-14
  • Revised：2022-04-27
Funding
Affiliations
    1.The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
    2.Wuhan Xinxin Semiconductor Manufacturing Co., Ltd, Wuhan 430223, China

Corresponding:

Li Xiangcheng (1978-), male, Ph.D., Professor. E-mail:
Chen Ping'an (1986-), male, Ph.D., Associate 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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