Microstructure and mechanical properties of super-hard B                         4                         C ceramic fabricated by spark plasma sintering with (Ti                         3                         SiC                         2                         +Si) as sintering aid

Qi Song; Zhao Hui Zhang; Zheng Yang Hu; Shi Pan Yin; Hao Wang; Zhen Wu Ma

doi:10.1016/j.ceramint.2019.01.204

Microstructure and mechanical properties of super-hard B ₄ C ceramic fabricated by spark plasma sintering with (Ti ₃ SiC ₂ +Si) as sintering aid

Qi Song, Zhao Hui Zhang^*, Zheng Yang Hu, Shi Pan Yin, Hao Wang, Zhen Wu Ma

^*Corresponding author for this work

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

Abstract

B ₄ C ceramics were fabricated by spark plasma sintering with 5% (Ti ₃ SiC ₂ +Si) as sintering aid. The effects of sintering temperatures and sintering aid on microstructures and properties of B ₄ C ceramics were investigated. The results indicated that the addition of a small amount of (Ti ₃ SiC ₂ +Si) could effectively improve the sintering characteristic of B ₄ C ceramics and reduce the sintering temperature. The as-sintered ceramics fabricated at 1700 °C exhibited excellent mechanical properties, including a super-high Vickers hardness of 38.4 GPa, a high flexural strength of 457.6 MPa and a good fracture toughness of 5.61 MPa m ^0.5 . Following reasons may be responsible for the improvement of the hardness of B ₄ C ceramics: high relative density due to the combination use of (Ti ₃ SiC ₂ +Si) sintering aids and SPS technology, fine-grained structure of the B ₄ C ceramics benefited from the low sintering temperature, formation of the second phases TiB ₂ and SiC by chemical reaction and existence of the nano-sized unit of (TiB ₂ +SiC) in B ₄ C grains.

Original language	English
Pages (from-to)	8790-8797
Number of pages	8
Journal	Ceramics International
Volume	45
Issue number	7
DOIs	https://doi.org/10.1016/j.ceramint.2019.01.204
Publication status	Published - May 2019

Keywords

B C ceramics
Mechanical properties
Microstructures
Spark plasma sintering
Super-high hardness

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ceramint.2019.01.204

Cite this

Song, Q., Zhang, Z. H., Hu, Z. Y., Yin, S. P., Wang, H., & Ma, Z. W. (2019). Microstructure and mechanical properties of super-hard B ₄ C ceramic fabricated by spark plasma sintering with (Ti ₃ SiC ₂ +Si) as sintering aid Ceramics International, 45(7), 8790-8797. https://doi.org/10.1016/j.ceramint.2019.01.204

Song, Qi ; Zhang, Zhao Hui ; Hu, Zheng Yang et al. / Microstructure and mechanical properties of super-hard B ₄ C ceramic fabricated by spark plasma sintering with (Ti ₃ SiC ₂ +Si) as sintering aid In: Ceramics International. 2019 ; Vol. 45, No. 7. pp. 8790-8797.

@article{a0ded96ea33f48b5b536c14f15841cad,

title = " Microstructure and mechanical properties of super-hard B 4 C ceramic fabricated by spark plasma sintering with (Ti 3 SiC 2 +Si) as sintering aid ",

abstract = " B 4 C ceramics were fabricated by spark plasma sintering with 5% (Ti 3 SiC 2 +Si) as sintering aid. The effects of sintering temperatures and sintering aid on microstructures and properties of B 4 C ceramics were investigated. The results indicated that the addition of a small amount of (Ti 3 SiC 2 +Si) could effectively improve the sintering characteristic of B 4 C ceramics and reduce the sintering temperature. The as-sintered ceramics fabricated at 1700 °C exhibited excellent mechanical properties, including a super-high Vickers hardness of 38.4 GPa, a high flexural strength of 457.6 MPa and a good fracture toughness of 5.61 MPa m 0.5 . Following reasons may be responsible for the improvement of the hardness of B 4 C ceramics: high relative density due to the combination use of (Ti 3 SiC 2 +Si) sintering aids and SPS technology, fine-grained structure of the B 4 C ceramics benefited from the low sintering temperature, formation of the second phases TiB 2 and SiC by chemical reaction and existence of the nano-sized unit of (TiB 2 +SiC) in B 4 C grains.",

keywords = "B C ceramics, Mechanical properties, Microstructures, Spark plasma sintering, Super-high hardness",

author = "Qi Song and Zhang, {Zhao Hui} and Hu, {Zheng Yang} and Yin, {Shi Pan} and Hao Wang and Ma, {Zhen Wu}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd and Techna Group S.r.l.",

year = "2019",

month = may,

doi = "10.1016/j.ceramint.2019.01.204",

language = "English",

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Song, Q, Zhang, ZH, Hu, ZY, Yin, SP, Wang, H & Ma, ZW 2019, ' Microstructure and mechanical properties of super-hard B ₄ C ceramic fabricated by spark plasma sintering with (Ti ₃ SiC ₂ +Si) as sintering aid ', Ceramics International, vol. 45, no. 7, pp. 8790-8797. https://doi.org/10.1016/j.ceramint.2019.01.204

Microstructure and mechanical properties of super-hard B ₄ C ceramic fabricated by spark plasma sintering with (Ti ₃ SiC ₂ +Si) as sintering aid . / Song, Qi; Zhang, Zhao Hui; Hu, Zheng Yang et al.
In: Ceramics International, Vol. 45, No. 7, 05.2019, p. 8790-8797.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Microstructure and mechanical properties of super-hard B 4 C ceramic fabricated by spark plasma sintering with (Ti 3 SiC 2 +Si) as sintering aid

AU - Song, Qi

AU - Zhang, Zhao Hui

AU - Hu, Zheng Yang

AU - Yin, Shi Pan

AU - Wang, Hao

AU - Ma, Zhen Wu

PY - 2019/5

Y1 - 2019/5

N2 - B 4 C ceramics were fabricated by spark plasma sintering with 5% (Ti 3 SiC 2 +Si) as sintering aid. The effects of sintering temperatures and sintering aid on microstructures and properties of B 4 C ceramics were investigated. The results indicated that the addition of a small amount of (Ti 3 SiC 2 +Si) could effectively improve the sintering characteristic of B 4 C ceramics and reduce the sintering temperature. The as-sintered ceramics fabricated at 1700 °C exhibited excellent mechanical properties, including a super-high Vickers hardness of 38.4 GPa, a high flexural strength of 457.6 MPa and a good fracture toughness of 5.61 MPa m 0.5 . Following reasons may be responsible for the improvement of the hardness of B 4 C ceramics: high relative density due to the combination use of (Ti 3 SiC 2 +Si) sintering aids and SPS technology, fine-grained structure of the B 4 C ceramics benefited from the low sintering temperature, formation of the second phases TiB 2 and SiC by chemical reaction and existence of the nano-sized unit of (TiB 2 +SiC) in B 4 C grains.

AB - B 4 C ceramics were fabricated by spark plasma sintering with 5% (Ti 3 SiC 2 +Si) as sintering aid. The effects of sintering temperatures and sintering aid on microstructures and properties of B 4 C ceramics were investigated. The results indicated that the addition of a small amount of (Ti 3 SiC 2 +Si) could effectively improve the sintering characteristic of B 4 C ceramics and reduce the sintering temperature. The as-sintered ceramics fabricated at 1700 °C exhibited excellent mechanical properties, including a super-high Vickers hardness of 38.4 GPa, a high flexural strength of 457.6 MPa and a good fracture toughness of 5.61 MPa m 0.5 . Following reasons may be responsible for the improvement of the hardness of B 4 C ceramics: high relative density due to the combination use of (Ti 3 SiC 2 +Si) sintering aids and SPS technology, fine-grained structure of the B 4 C ceramics benefited from the low sintering temperature, formation of the second phases TiB 2 and SiC by chemical reaction and existence of the nano-sized unit of (TiB 2 +SiC) in B 4 C grains.

KW - B C ceramics

KW - Mechanical properties

KW - Microstructures

KW - Spark plasma sintering

KW - Super-high hardness

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VL - 45

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JO - Ceramics International

JF - Ceramics International

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Song Q, Zhang ZH, Hu ZY, Yin SP, Wang H, Ma ZW. Microstructure and mechanical properties of super-hard B ₄ C ceramic fabricated by spark plasma sintering with (Ti ₃ SiC ₂ +Si) as sintering aid Ceramics International. 2019 May;45(7):8790-8797. doi: 10.1016/j.ceramint.2019.01.204