Synthesis of Si3N4 composite nano-powders and evaluation of sintered bodies

Takanori Shinoura, Masato Uehara, Naoya Enomoto, Junichi Hojo

Research output: Contribution to journalArticle

Abstract

Fine Si3N4 powder, Si3N4-TiN composite powder and Si3N4-BN-TiN composite powder were prepared by a vapor phase reaction method, and hot-pressed to investigate the effects of TiN inclusion in Si3N4-TiN composites and BN inclusion in Si3N4-BN-TiN composites on the microstructure and mechanical properties of sintered bodies. The prepared powders were fine with a size of about 80-100 nm. Hot pressing was carried out for 2h at 1800°C and 50 MPa in N2 with 6 wt% Y2O3 and 2 wt% Al2O3 as sintering aids. When the content of TiN was small, Si3N4-TiN composites included rod-like Si 3N4 grains dispersed in a fine Si3N4 matrix, having a high thermal shock resistance whilst retaining their fracture toughness. The thermal shock resistance of Si3N4-TiN composites was not improved by addition of the BN and the fracture toughness was reduced.

Original languageEnglish
Pages (from-to)210-213
Number of pages4
JournalJournal of Ceramic Processing Research
Volume4
Issue number4
Publication statusPublished - 2003

Fingerprint

Powders
Composite materials
Thermal shock
Fracture toughness
Hot pressing
silicon nitride
Sintering
Vapors
Mechanical properties
Microstructure

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

Cite this

Shinoura, T., Uehara, M., Enomoto, N., & Hojo, J. (2003). Synthesis of Si3N4 composite nano-powders and evaluation of sintered bodies. Journal of Ceramic Processing Research, 4(4), 210-213.

Synthesis of Si3N4 composite nano-powders and evaluation of sintered bodies. / Shinoura, Takanori; Uehara, Masato; Enomoto, Naoya; Hojo, Junichi.

In: Journal of Ceramic Processing Research, Vol. 4, No. 4, 2003, p. 210-213.

Research output: Contribution to journalArticle

Shinoura, T, Uehara, M, Enomoto, N & Hojo, J 2003, 'Synthesis of Si3N4 composite nano-powders and evaluation of sintered bodies', Journal of Ceramic Processing Research, vol. 4, no. 4, pp. 210-213.
Shinoura, Takanori ; Uehara, Masato ; Enomoto, Naoya ; Hojo, Junichi. / Synthesis of Si3N4 composite nano-powders and evaluation of sintered bodies. In: Journal of Ceramic Processing Research. 2003 ; Vol. 4, No. 4. pp. 210-213.
@article{1b19c64aa4f44a8bbfb8c42654468fe2,
title = "Synthesis of Si3N4 composite nano-powders and evaluation of sintered bodies",
abstract = "Fine Si3N4 powder, Si3N4-TiN composite powder and Si3N4-BN-TiN composite powder were prepared by a vapor phase reaction method, and hot-pressed to investigate the effects of TiN inclusion in Si3N4-TiN composites and BN inclusion in Si3N4-BN-TiN composites on the microstructure and mechanical properties of sintered bodies. The prepared powders were fine with a size of about 80-100 nm. Hot pressing was carried out for 2h at 1800°C and 50 MPa in N2 with 6 wt{\%} Y2O3 and 2 wt{\%} Al2O3 as sintering aids. When the content of TiN was small, Si3N4-TiN composites included rod-like Si 3N4 grains dispersed in a fine Si3N4 matrix, having a high thermal shock resistance whilst retaining their fracture toughness. The thermal shock resistance of Si3N4-TiN composites was not improved by addition of the BN and the fracture toughness was reduced.",
author = "Takanori Shinoura and Masato Uehara and Naoya Enomoto and Junichi Hojo",
year = "2003",
language = "English",
volume = "4",
pages = "210--213",
journal = "Journal of Ceramic Processing Research",
issn = "1229-9162",
publisher = "Hanyang University",
number = "4",

}

TY - JOUR

T1 - Synthesis of Si3N4 composite nano-powders and evaluation of sintered bodies

AU - Shinoura, Takanori

AU - Uehara, Masato

AU - Enomoto, Naoya

AU - Hojo, Junichi

PY - 2003

Y1 - 2003

N2 - Fine Si3N4 powder, Si3N4-TiN composite powder and Si3N4-BN-TiN composite powder were prepared by a vapor phase reaction method, and hot-pressed to investigate the effects of TiN inclusion in Si3N4-TiN composites and BN inclusion in Si3N4-BN-TiN composites on the microstructure and mechanical properties of sintered bodies. The prepared powders were fine with a size of about 80-100 nm. Hot pressing was carried out for 2h at 1800°C and 50 MPa in N2 with 6 wt% Y2O3 and 2 wt% Al2O3 as sintering aids. When the content of TiN was small, Si3N4-TiN composites included rod-like Si 3N4 grains dispersed in a fine Si3N4 matrix, having a high thermal shock resistance whilst retaining their fracture toughness. The thermal shock resistance of Si3N4-TiN composites was not improved by addition of the BN and the fracture toughness was reduced.

AB - Fine Si3N4 powder, Si3N4-TiN composite powder and Si3N4-BN-TiN composite powder were prepared by a vapor phase reaction method, and hot-pressed to investigate the effects of TiN inclusion in Si3N4-TiN composites and BN inclusion in Si3N4-BN-TiN composites on the microstructure and mechanical properties of sintered bodies. The prepared powders were fine with a size of about 80-100 nm. Hot pressing was carried out for 2h at 1800°C and 50 MPa in N2 with 6 wt% Y2O3 and 2 wt% Al2O3 as sintering aids. When the content of TiN was small, Si3N4-TiN composites included rod-like Si 3N4 grains dispersed in a fine Si3N4 matrix, having a high thermal shock resistance whilst retaining their fracture toughness. The thermal shock resistance of Si3N4-TiN composites was not improved by addition of the BN and the fracture toughness was reduced.

UR - http://www.scopus.com/inward/record.url?scp=2542624547&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2542624547&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:2542624547

VL - 4

SP - 210

EP - 213

JO - Journal of Ceramic Processing Research

JF - Journal of Ceramic Processing Research

SN - 1229-9162

IS - 4

ER -