Densification, microstructure and mechanical properties of SiO 2-cBN composites by spark plasma sintering

Jianfeng Zhang; Rong Tu; Takashi Goto

doi:10.1016/j.ceramint.2011.07.013

Densification, microstructure and mechanical properties of SiO ₂-cBN composites by spark plasma sintering

Jianfeng Zhang, Rong Tu, Takashi Goto

Materials Processing and Characterization Division

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

33 Citations (Scopus)

Abstract

SiO₂-cBN composites were consolidated by spark plasma sintering at 1473-1973 K. The effects of cBN content and sintering temperature on the relative density, phase transformation, microstructure and mechanical properties of the SiO₂-cBN composites were investigated. The relative density of the SiO₂-cBN composites increased with increasing SiO₂ content. The phase transformation of cBN to hBN in SiO₂-cBN composites was identified at 1973 K, showing the highest transformation temperature in cBN-containing composites. The SiO₂-20 vol% cBN composites sintered at 1673 K showed the highest hardness and fracture toughness of 12.5 GPa and 1.5 MPa m^1/2, respectively.

Original language	English
Pages (from-to)	351-356
Number of pages	6
Journal	Ceramics International
Volume	38
Issue number	1
DOIs	https://doi.org/10.1016/j.ceramint.2011.07.013
Publication status	Published - 2012 Jan

Keywords

C. Mechanical properties
Cubic boron nitride
Phase transformation
Silicon oxide
Spark plasma sintering

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.ceramint.2011.07.013

Cite this

@article{30962c27f8964f30aeca6d21e751117f,

title = "Densification, microstructure and mechanical properties of SiO 2-cBN composites by spark plasma sintering",

abstract = "SiO2-cBN composites were consolidated by spark plasma sintering at 1473-1973 K. The effects of cBN content and sintering temperature on the relative density, phase transformation, microstructure and mechanical properties of the SiO2-cBN composites were investigated. The relative density of the SiO2-cBN composites increased with increasing SiO2 content. The phase transformation of cBN to hBN in SiO2-cBN composites was identified at 1973 K, showing the highest transformation temperature in cBN-containing composites. The SiO2-20 vol% cBN composites sintered at 1673 K showed the highest hardness and fracture toughness of 12.5 GPa and 1.5 MPa m1/2, respectively.",

keywords = "C. Mechanical properties, Cubic boron nitride, Phase transformation, Silicon oxide, Spark plasma sintering",

author = "Jianfeng Zhang and Rong Tu and Takashi Goto",

note = "Funding Information: This research was financially supported by the Japan Society for the Promotion of Science (JSPS) , Grant-in-Aid for JSPS fellow, 22-00365 , Japan, the Rare Metal Substitute Materials Development Project, the New Energy and Industry Technology Development Organization (NEDO), the Global COE Program “Materials Integration (International Center of Education and Research), Tohoku University” and the International Collaboration Center, ICC-IMR, Tohoku University.",

year = "2012",

month = jan,

doi = "10.1016/j.ceramint.2011.07.013",

language = "English",

volume = "38",

pages = "351--356",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Limited",

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T1 - Densification, microstructure and mechanical properties of SiO 2-cBN composites by spark plasma sintering

AU - Zhang, Jianfeng

AU - Tu, Rong

AU - Goto, Takashi

N1 - Funding Information: This research was financially supported by the Japan Society for the Promotion of Science (JSPS) , Grant-in-Aid for JSPS fellow, 22-00365 , Japan, the Rare Metal Substitute Materials Development Project, the New Energy and Industry Technology Development Organization (NEDO), the Global COE Program “Materials Integration (International Center of Education and Research), Tohoku University” and the International Collaboration Center, ICC-IMR, Tohoku University.

PY - 2012/1

Y1 - 2012/1

N2 - SiO2-cBN composites were consolidated by spark plasma sintering at 1473-1973 K. The effects of cBN content and sintering temperature on the relative density, phase transformation, microstructure and mechanical properties of the SiO2-cBN composites were investigated. The relative density of the SiO2-cBN composites increased with increasing SiO2 content. The phase transformation of cBN to hBN in SiO2-cBN composites was identified at 1973 K, showing the highest transformation temperature in cBN-containing composites. The SiO2-20 vol% cBN composites sintered at 1673 K showed the highest hardness and fracture toughness of 12.5 GPa and 1.5 MPa m1/2, respectively.

AB - SiO2-cBN composites were consolidated by spark plasma sintering at 1473-1973 K. The effects of cBN content and sintering temperature on the relative density, phase transformation, microstructure and mechanical properties of the SiO2-cBN composites were investigated. The relative density of the SiO2-cBN composites increased with increasing SiO2 content. The phase transformation of cBN to hBN in SiO2-cBN composites was identified at 1973 K, showing the highest transformation temperature in cBN-containing composites. The SiO2-20 vol% cBN composites sintered at 1673 K showed the highest hardness and fracture toughness of 12.5 GPa and 1.5 MPa m1/2, respectively.

KW - C. Mechanical properties

KW - Cubic boron nitride

KW - Phase transformation

KW - Silicon oxide

KW - Spark plasma sintering

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