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Effects of TiB2 on Microstructure and Mechanical Properties of Pressure-less-sintered B4C-TiB2 Composites
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Zongjia LI1, Huanwu CHENG1, 2, Yangwei WANG1, 2, Yu ZHU1, Rui AN1, Haiyan FANG1, Feiya AILI1
Journal of the Chinese Ceramic Society | 2021, 49(3) : 461 - 468
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Journal of the Chinese Ceramic Society | 2021, 49(3): 461-468
Effects of TiB2 on Microstructure and Mechanical Properties of Pressure-less-sintered B4C-TiB2 Composites
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Zongjia LI1, Huanwu CHENG1, 2, Yangwei WANG1, 2, Yu ZHU1, Rui AN1, Haiyan FANG1, Feiya AILI1
Affiliations
  • 1.School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
  • 2.National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing Institute of Technology, Beijing 100081, China

    • LI Zongjia (1995-), male, Master candidate. E-mail:

About Author:

LI Zongjia (1995-), male, Master candidate. E-mail:

Published: 2021-03-20 doi: 10.14062/j.issn.0454-5648.20200461
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Boron carbide matrix composites containing boron carbide (B4C), titanium diboride (TiB2) at 20% (mass fraction) and 30%, and titanium carbide (TiC) were fabricated at 2 130℃ using a pressure-less sintering method. Different amounts of TiB2 and TiC particles were added to B4C. TiB2 content was chosen as the main variable to study the effect on the composites. The density, hardness, bending strengths and fracture toughness measurements were performed to obtain the physical and mechanical properties of the samples. The results indicate that by adding 30%TiB2 sub-micron particles at 2 130℃, the bending strength and fracture toughness of 277.6 MPa and 5.38 MPa·m1/2 were obtained for the composite. Particle pullout and crack micro-bridging play an effective role in toughening the composite ceramics. The main toughening mechanisms of the B4C-TiB2 composites are noted to possess microcrack and crack deflection toughening owing to the residual stresses resulting from the mismatch of the thermal expansion coefficient between TiB2 and B4C.

pressure-less sintering  /  boron carbide-titanium diboride composites  /  microstructure  /  mechanical properties
李宗家, 程焕武, 王扬卫, 朱宇, 安瑞, 方海燕, 艾丽菲亚. TiB2对无压烧结B4C-TiB2复相陶瓷结构和性能的影响. 硅酸盐学报, 2021 , 49 (3) : 461 -468 . DOI: 10.14062/j.issn.0454-5648.20200461
Zongjia LI, Huanwu CHENG, Yangwei WANG, Yu ZHU, Rui AN, Haiyan FANG, Feiya AILI. Effects of TiB2 on Microstructure and Mechanical Properties of Pressure-less-sintered B4C-TiB2 Composites[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (3) : 461 -468 . DOI: 10.14062/j.issn.0454-5648.20200461
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Year 2021 volume 49 Issue 3
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Article Info
doi: 10.14062/j.issn.0454-5648.20200461
  • Receive Date：2019-06-28
  • Online Date：2026-10-30
  • Published：2021-03-20
Article Data
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History
  • Received：2019-06-28
  • Revised：2019-07-28
Affiliations
    1.School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
    2.National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing Institute of Technology, Beijing 100081, China

Corresponding:

CHENG Huanwu (1967-), male, Ph.D., associate 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
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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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