Pressureless densification and properties of TiB 2 –B 4  C composite ceramics with Ni as additives | Zendy

Ma Li | Zendy; Yu Jincheng | Zendy; Guo Xue | Zendy; Zhang Yujun | Zendy; Gong Hongyu | Zendy

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Pressureless densification and properties of TiB 2 –B 4 C composite ceramics with Ni as additives

Author(s) -

Ma Li,

Yu Jincheng,

Guo Xue,

Zhang Yujun,

Gong Hongyu

Publication year - 2018

Publication title -

micro and nano letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.25

H-Index - 31

ISSN - 1750-0443

DOI - 10.1049/mnl.2017.0709

Subject(s) - materials science , boron carbide , composite number , flexural strength , fracture toughness , titanium diboride , ceramic , sintering , relative density , composite material , thermal conductivity , boron , chemistry , organic chemistry

Titanium diboride–boron carbide (TiB 2 –B 4 C) composite ceramics were prepared using different amounts of Ni as sintering aids by pressureless sintering at 2100°C for 60 min under an argon atmosphere. This study focused on the effects of different amounts of Ni as additives on densification and mechanical and thermal properties of TiB 2 –B 4 C composite ceramics. Results showed that the relative density, hardness, flexural strength and thermal conductivity of obtained composite ceramics with 1.3 wt% Ni addition were 98%, 20.4 GPa, 330 MPa and 30 W/m K, respectively. However, fracture toughness was 6 MPa m 1/2 when the content of Ni was fixed at 2.2 wt%.

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