B4C-TiB2-SiC复合陶瓷的SPS制备及组织性能研究

Pengduo Zhao; Qi Wang; Lei Zhang; Mao Li; Qi Song; Zhaohui Zhang; Shipan Yin; Zhaohu Jia

doi:10.15918/j.tbit1001-0645.2021.139

B₄C-TiB₂-SiC复合陶瓷的SPS制备及组织性能研究

Translated title of the contribution: Microstructure and Mechanical Properties of B₄C-TiB₂-SiC Ceramics Fabricated by Spark Plasma Sintering

Pengduo Zhao, Qi Wang, Lei Zhang, Mao Li, Qi Song, Zhaohui Zhang^*, Shipan Yin, Zhaohu Jia

^*Corresponding author for this work

School of Material Science and Engineering

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

1 Citation (Scopus)

Abstract

A new preparation method of B₄C-based composite ceramics was proposed to improve sintering performance and decrease preparation cost of B₄C ceramics. Taking B₄C, Ti₃SiC₂, and Si mixtures as raw powders, B₄C-TiB₂-SiC composite ceramics with 30 wt. % (TiB₂+SiC) second phase were fabricated based on spark plasma sintering (SPS) method. Taking advantage of special sintering mechanism of SPS and in situ exothermic reaction during the sintering process, the new method was arranged to improve the sintering property and reduce the preparation cost of B₄C ceramics. The results indicate that composite ceramics with high relative density (98.5%) can be obtained at 1650 ℃ and 50 MPa for 5 min. With the increasing of sintering pressure, hardness of B₄C-TiB₂-SiC composite ceramics gradually increases, fracture toughness decreases, while flexural strength shows a trend of rise slowly at first and then rise rapidly.

Translated title of the contribution	Microstructure and Mechanical Properties of B₄C-TiB₂-SiC Ceramics Fabricated by Spark Plasma Sintering
Original language	Chinese (Traditional)
Pages (from-to)	658-664
Number of pages	7
Journal	Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume	42
Issue number	6
DOIs	https://doi.org/10.15918/j.tbit1001-0645.2021.139
Publication status	Published - Jun 2022

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10.15918/j.tbit1001-0645.2021.139

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title = "B4C-TiB2-SiC复合陶瓷的SPS制备及组织性能研究",

abstract = "A new preparation method of B4C-based composite ceramics was proposed to improve sintering performance and decrease preparation cost of B4C ceramics. Taking B4C, Ti3SiC2, and Si mixtures as raw powders, B4C-TiB2-SiC composite ceramics with 30 wt. % (TiB2+SiC) second phase were fabricated based on spark plasma sintering (SPS) method. Taking advantage of special sintering mechanism of SPS and in situ exothermic reaction during the sintering process, the new method was arranged to improve the sintering property and reduce the preparation cost of B4C ceramics. The results indicate that composite ceramics with high relative density (98.5%) can be obtained at 1650 ℃ and 50 MPa for 5 min. With the increasing of sintering pressure, hardness of B4C-TiB2-SiC composite ceramics gradually increases, fracture toughness decreases, while flexural strength shows a trend of rise slowly at first and then rise rapidly.",

keywords = "BC-TiB-SiC composite ceramics, Mechanical properties, Microstructure, Sintering pressure, Spark plasma sintering(SPS)",

author = "Pengduo Zhao and Qi Wang and Lei Zhang and Mao Li and Qi Song and Zhaohui Zhang and Shipan Yin and Zhaohu Jia",

year = "2022",

month = jun,

doi = "10.15918/j.tbit1001-0645.2021.139",

language = "繁体中文",

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pages = "658--664",

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AU - Zhao, Pengduo

AU - Wang, Qi

AU - Zhang, Lei

AU - Li, Mao

AU - Song, Qi

AU - Zhang, Zhaohui

AU - Yin, Shipan

AU - Jia, Zhaohu

PY - 2022/6

Y1 - 2022/6

N2 - A new preparation method of B4C-based composite ceramics was proposed to improve sintering performance and decrease preparation cost of B4C ceramics. Taking B4C, Ti3SiC2, and Si mixtures as raw powders, B4C-TiB2-SiC composite ceramics with 30 wt. % (TiB2+SiC) second phase were fabricated based on spark plasma sintering (SPS) method. Taking advantage of special sintering mechanism of SPS and in situ exothermic reaction during the sintering process, the new method was arranged to improve the sintering property and reduce the preparation cost of B4C ceramics. The results indicate that composite ceramics with high relative density (98.5%) can be obtained at 1650 ℃ and 50 MPa for 5 min. With the increasing of sintering pressure, hardness of B4C-TiB2-SiC composite ceramics gradually increases, fracture toughness decreases, while flexural strength shows a trend of rise slowly at first and then rise rapidly.

AB - A new preparation method of B4C-based composite ceramics was proposed to improve sintering performance and decrease preparation cost of B4C ceramics. Taking B4C, Ti3SiC2, and Si mixtures as raw powders, B4C-TiB2-SiC composite ceramics with 30 wt. % (TiB2+SiC) second phase were fabricated based on spark plasma sintering (SPS) method. Taking advantage of special sintering mechanism of SPS and in situ exothermic reaction during the sintering process, the new method was arranged to improve the sintering property and reduce the preparation cost of B4C ceramics. The results indicate that composite ceramics with high relative density (98.5%) can be obtained at 1650 ℃ and 50 MPa for 5 min. With the increasing of sintering pressure, hardness of B4C-TiB2-SiC composite ceramics gradually increases, fracture toughness decreases, while flexural strength shows a trend of rise slowly at first and then rise rapidly.

KW - BC-TiB-SiC composite ceramics

KW - Mechanical properties

KW - Microstructure

KW - Sintering pressure

KW - Spark plasma sintering(SPS)

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B₄C-TiB₂-SiC复合陶瓷的SPS制备及组织性能研究

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