Spark plasma sintering of cBN(core)/SiO                         2                         (shell) powder prepared by rotary chemical vapor deposition

Jianfeng Zhang; Hirokazu Katsui; Zhenhua He; Takashi Goto

doi:10.1016/j.jascer.2014.04.001

Spark plasma sintering of cBN(core)/SiO ₂ (shell) powder prepared by rotary chemical vapor deposition

Jianfeng Zhang, Hirokazu Katsui, Zhenhua He, Takashi Goto

Materials Processing and Characterization Division

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

5 Citations (Scopus)

Abstract

SiO ₂ nanolayer coated cubic boron nitride (cBN), cBN(core)/SiO ₂ (shell) powder, was prepared by rotary chemical vapor deposition. The cBN/SiO ₂ powder was densified by spark plasma sintering at 1873K for 0.3ks. The hexagonal boron nitride (hBN) phase was not observed in the cBN-SiO ₂ composites, indicating that the SiO ₂ nanolayer depressed the phase transformation from cBN to hBN. The relative density of cBN-SiO ₂ increased with increasing SiO ₂ content (CSiO2). The highest hardness of the cBN-SiO ₂ composite was 17.5GPa at CSiO2=38 wt% and a load of 0.98N.

Original language	English
Pages (from-to)	204-209
Number of pages	6
Journal	Journal of Asian Ceramic Societies
Volume	2
Issue number	3
DOIs	https://doi.org/10.1016/j.jascer.2014.04.001
Publication status	Published - 2014 Sep

Keywords

Cubic boron nitride (cBN)
Rotary chemical vapor deposition
Spark plasma sintering

ASJC Scopus subject areas

Ceramics and Composites

Access to Document

10.1016/j.jascer.2014.04.001

Cite this

Spark plasma sintering of cBN(core)/SiO ₂ (shell) powder prepared by rotary chemical vapor deposition . / Zhang, Jianfeng; Katsui, Hirokazu; He, Zhenhua et al.

In: Journal of Asian Ceramic Societies, Vol. 2, No. 3, 09.2014, p. 204-209.

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

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abstract = " SiO 2 nanolayer coated cubic boron nitride (cBN), cBN(core)/SiO 2 (shell) powder, was prepared by rotary chemical vapor deposition. The cBN/SiO 2 powder was densified by spark plasma sintering at 1873K for 0.3ks. The hexagonal boron nitride (hBN) phase was not observed in the cBN-SiO 2 composites, indicating that the SiO 2 nanolayer depressed the phase transformation from cBN to hBN. The relative density of cBN-SiO 2 increased with increasing SiO 2 content (CSiO2). The highest hardness of the cBN-SiO 2 composite was 17.5GPa at CSiO2=38 wt% and a load of 0.98N.",

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AU - Goto, Takashi

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N2 - SiO 2 nanolayer coated cubic boron nitride (cBN), cBN(core)/SiO 2 (shell) powder, was prepared by rotary chemical vapor deposition. The cBN/SiO 2 powder was densified by spark plasma sintering at 1873K for 0.3ks. The hexagonal boron nitride (hBN) phase was not observed in the cBN-SiO 2 composites, indicating that the SiO 2 nanolayer depressed the phase transformation from cBN to hBN. The relative density of cBN-SiO 2 increased with increasing SiO 2 content (CSiO2). The highest hardness of the cBN-SiO 2 composite was 17.5GPa at CSiO2=38 wt% and a load of 0.98N.

AB - SiO 2 nanolayer coated cubic boron nitride (cBN), cBN(core)/SiO 2 (shell) powder, was prepared by rotary chemical vapor deposition. The cBN/SiO 2 powder was densified by spark plasma sintering at 1873K for 0.3ks. The hexagonal boron nitride (hBN) phase was not observed in the cBN-SiO 2 composites, indicating that the SiO 2 nanolayer depressed the phase transformation from cBN to hBN. The relative density of cBN-SiO 2 increased with increasing SiO 2 content (CSiO2). The highest hardness of the cBN-SiO 2 composite was 17.5GPa at CSiO2=38 wt% and a load of 0.98N.

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