Spark plasma sintering of βSiAION-cBN composite

Mikinori Hotta; Takashi Goto

doi:10.4028/0-87849-462-6.599

Spark plasma sintering of βSiAION-cBN composite

Mikinori Hotta, Takashi Goto

Materials Processing and Characterization Division

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

16 Citations (Scopus)

Abstract

βSiAlON-cubic boron nitride (cBN) composites were prepared from β-SiAlON and cBN powders using spark plasma sintering (SPS) at firing temperature of 1600-1900°C under pressure of 100MPa, and densification, phase transformation and hardness of the composites were investigated. The phase transformation of cBN to hexagonal BN (hBN) was inhibited in βSiAlON-cBN composite. βSiAlON-cBN composites containing 10-30 vol% cBN fired at 1650°C were densified to 95-98% of theoretical density with no transformation of cBN to hBN. Vickers hardness of the βSiAlON-cBN composite containing 20 vol% cBN fired at 1650°C was 17.5 GPa in maximum value, and the hardness significantly decreased as cBN phase was transformed to hBN in the composites.

Original language	English
Title of host publication	Selected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
Publisher	Trans Tech Publications Ltd
Pages	599-602
Number of pages	4
Edition	PART 1
ISBN (Print)	0878494626, 9780878494620
DOIs	https://doi.org/10.4028/0-87849-462-6.599
Publication status	Published - 2007 Jan 1
Event	6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6 - Jeju, Korea, Republic of Duration: 2007 Nov 5 → 2007 Nov 9

Publication series

Name	Materials Science Forum
Number	PART 1
Volume	561-565
ISSN (Print)	0255-5476
ISSN (Electronic)	1662-9752

Other

Other	6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
Country/Territory	Korea, Republic of
City	Jeju
Period	07/11/5 → 07/11/9

Keywords

Cubic boron nitride
Densification
Hardness
Phase transformation
SiAlON
Spark plasma sintering

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.4028/0-87849-462-6.599

Cite this

Spark plasma sintering of βSiAION-cBN composite. / Hotta, Mikinori; Goto, Takashi.
Selected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6. PART 1. ed. Trans Tech Publications Ltd, 2007. p. 599-602 (Materials Science Forum; Vol. 561-565, No. PART 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Hotta, M & Goto, T 2007, Spark plasma sintering of βSiAION-cBN composite. in Selected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6. PART 1 edn, Materials Science Forum, no. PART 1, vol. 561-565, Trans Tech Publications Ltd, pp. 599-602, 6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6, Jeju, Korea, Republic of, 07/11/5. https://doi.org/10.4028/0-87849-462-6.599

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abstract = "βSiAlON-cubic boron nitride (cBN) composites were prepared from β-SiAlON and cBN powders using spark plasma sintering (SPS) at firing temperature of 1600-1900°C under pressure of 100MPa, and densification, phase transformation and hardness of the composites were investigated. The phase transformation of cBN to hexagonal BN (hBN) was inhibited in βSiAlON-cBN composite. βSiAlON-cBN composites containing 10-30 vol% cBN fired at 1650°C were densified to 95-98% of theoretical density with no transformation of cBN to hBN. Vickers hardness of the βSiAlON-cBN composite containing 20 vol% cBN fired at 1650°C was 17.5 GPa in maximum value, and the hardness significantly decreased as cBN phase was transformed to hBN in the composites.",

keywords = "Cubic boron nitride, Densification, Hardness, Phase transformation, SiAlON, Spark plasma sintering",

author = "Mikinori Hotta and Takashi Goto",

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AB - βSiAlON-cubic boron nitride (cBN) composites were prepared from β-SiAlON and cBN powders using spark plasma sintering (SPS) at firing temperature of 1600-1900°C under pressure of 100MPa, and densification, phase transformation and hardness of the composites were investigated. The phase transformation of cBN to hexagonal BN (hBN) was inhibited in βSiAlON-cBN composite. βSiAlON-cBN composites containing 10-30 vol% cBN fired at 1650°C were densified to 95-98% of theoretical density with no transformation of cBN to hBN. Vickers hardness of the βSiAlON-cBN composite containing 20 vol% cBN fired at 1650°C was 17.5 GPa in maximum value, and the hardness significantly decreased as cBN phase was transformed to hBN in the composites.

KW - Cubic boron nitride

KW - Densification

KW - Hardness

KW - Phase transformation

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Spark plasma sintering of βSiAION-cBN composite

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