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Preparation and Properties of Automobile Material B4 C-PrB6/CeB6
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Ying HUANG1, Liming SUI2, Kun LI2
Mining and Metallurgical Engineering | 2023, 43(6) : 169 - 173
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Mining and Metallurgical Engineering | 2023, 43(6): 169-173
• MATERIALS •
Preparation and Properties of Automobile Material B4 C-PrB6/CeB6
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Ying HUANG1, Liming SUI2, Kun LI2
Affiliations
  • 1.School of Automobile, Henan College of Transportation, Zhengzhou 450005, Henan, China
  • 2.College of Vehicle and Traffic Engineering, Henan Institute of Technology, Xinxiang 453000, Henan, China
Published: 2023-12-01 doi: 10.3969/j.issn.0253-6099.2023.06.036
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With Pr6O11 and CeO2 as additives, B4C matrix composite materials were prepared at 2 200 ℃, 1 900 ℃, and 1 700 ℃ by adopting techniques of pressureless sintering, hot pressing sintering, and spark plasma sintering, respectively. The relative microstructure and mechanical properties were also studied. It is found that PrB6 and CeB6 formed in situ can fill the pores between B4C grains, and improve the density of the composites. Compared with pressureless sintering and hot pressing sintering, the technique of spark plasma sintering can bring the prepared composites with higher density. The fracture toughness of B4C-CeB6 composites can be improved due to its high relative density, as well as the deflection, branching and bridging of cracks occuring along CeB6, which extends the expansion path of cracks and reduces stress concentration. The B4C-CeB6 composite prepared by spark plasma sintering has good comprehensive mechanical properties, with the relative density, vickers hardness, bending strength and fracture toughness reaching 99.3%, 34.7 GPa, 451 MPa and 4.38 MPa·m1/2, respectively.

automobile material  /  boron carbide  /  praseodymium borate  /  cerium boride  /  rare earth doping  /  additives  /  preparation process  /  fracture toughness  /  composite materials  /  density
Ying HUANG, Liming SUI, Kun LI. Preparation and Properties of Automobile Material B4 C-PrB6/CeB6[J]. Mining and Metallurgical Engineering, 2023 , 43 (6) : 169 -173 . DOI: 10.3969/j.issn.0253-6099.2023.06.036
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Year 2023 volume 43 Issue 6
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Article Info
doi: 10.3969/j.issn.0253-6099.2023.06.036
  • Receive Date：2023-06-05
  • Online Date：2026-03-05
  • Published：2023-12-01
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  • Received：2023-06-05
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Affiliations
    1.School of Automobile, Henan College of Transportation, Zhengzhou 450005, Henan, China
    2.College of Vehicle and Traffic Engineering, Henan Institute of Technology, Xinxiang 453000, Henan, China
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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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