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Effect of Titanium Boride on Microstructure and Properties of Boron Carbide by Pressureless Sintering
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Zongjia LI1, Jiamin ZHANG1, Huanwu CHENG1, 2, Yangwei WANG1, 2, Yu ZHU1, Rui AN1
Journal of the Chinese Ceramic Society | 2020, 48(3) : 356 - 361
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Journal of the Chinese Ceramic Society | 2020, 48(3): 356-361
Effect of Titanium Boride on Microstructure and Properties of Boron Carbide by Pressureless Sintering
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Zongjia LI1, Jiamin ZHANG1, Huanwu CHENG1, 2, Yangwei WANG1, 2, Yu ZHU1, Rui AN1
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-mai:

About Author:

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

Published: 2020-03-20 doi: 10.14062/j.issn.0454-5648.20190308
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B4C-TiB2 multi-phase ceramics were prepared in a pressureless vacuum sintering-furnace at different temperatures with TiB2 added into B4C matrix as a second phase substance, and C and Si as sintering aids. The density, hardness, bending strength and fracture toughness of the samples were determined. The influences of composition ratio of B4C-TiB2 and sintering temperature on the microstructure and mechanical properties of the multiphase ceramics were investigated by X-ray diffraction, energy dispersive spectroscopy and scanning electron microscopy. The toughening mechanism of ceramics was discussed. The results show that the optimum density and comprehensive mechanical properties of the multiphase ceramics (i.e., the relative density of 94.59%, the Rockwell hardness of 87.62, the bending strength of 182 MPa, and the fracture toughness of 3.97 MPa·m1/2 can be obtained at a sintering temperature of 2 200 ℃ and TiB2 content of 30%. The TiB2 particles can effectively nail the grain boundary, inhibit the growth of B4C grains and play a role in fine-grain strengthening. The TiB2 and laminated graphite phase hinder the crack growth, thus improving the fracture toughness.

boron carbide  /  titanium boride  /  multiphase ceramics  /  pressureless sintering  /  toughening
李宗家, 张佳敏, 程焕武, 王扬卫, 朱宇, 安瑞. 硼化钛对无压烧结碳化硼结构和性能的影响. 硅酸盐学报, 2020 , 48 (3) : 356 -361 . DOI: 10.14062/j.issn.0454-5648.20190308
Zongjia LI, Jiamin ZHANG, Huanwu CHENG, Yangwei WANG, Yu ZHU, Rui AN. Effect of Titanium Boride on Microstructure and Properties of Boron Carbide by Pressureless Sintering[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (3) : 356 -361 . DOI: 10.14062/j.issn.0454-5648.20190308
Appendix
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Year 2020 volume 48 Issue 3
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Article Info
doi: 10.14062/j.issn.0454-5648.20190308
  • Receive Date：2019-05-09
  • Online Date：2026-10-29
  • Published：2020-03-20
Article Data
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History
  • Received：2019-05-09
  • Revised：2019-06-11
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
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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