Influence of sintering aids on the nitridation of reaction bonded Si 3N4/BN ceramics

Tiesong Lin; Dechang Jia

doi:10.4028/0-87849-456-1.1497

Influence of sintering aids on the nitridation of reaction bonded Si ₃N₄/BN ceramics

Tiesong Lin^*
, Dechang Jia

^*Corresponding author for this work

School of Materials Science and Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

The influences of different sintering aids, including Fe₂O ₃, Fe(NO₃)₃·9H₂O, Y ₂O₃+A1₂O₃ and MgO+Al ₂O₃+SiO₂, on the nitridation of reaction bonded Si₃N₄/BN ceramics were conducted at 1350°C for 2h. Results indicate that the addition of sintering aids could facilitate the nitridation process resulting in higher nitridation percent due to the reactions between sintering aids and surface silica on silicon powder. When 5wt.% Of Y₂O₃ and 2wt.% Al₂O₃ were added, the nitridation percent reached to 94.4%. The addition of sintering aids has obvious effect on the ratio of α-Si₃N₄/β- Si₃N₄. The increase of β-Si₃N₄ ratio was attributed to the direct reaction of silicon with nitrogen.

Original language	English
Pages (from-to)	1497-1500
Number of pages	4
Journal	Key Engineering Materials
Volume	353-358
Issue number	PART 3
DOIs	https://doi.org/10.4028/0-87849-456-1.1497
State	Published - 2007
Event	Asian Pacific Conference for Fracture and Strength (APCFS'06) - Sanya, Hainan Island, China Duration: 22 Nov 2006 → 25 Nov 2006

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 3 Good Health and Well-being

Keywords

Phase composition
Reaction bonded
Silicon
Sintering aids

Access to Document

10.4028/0-87849-456-1.1497

Cite this

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title = "Influence of sintering aids on the nitridation of reaction bonded Si 3N4/BN ceramics",

abstract = "The influences of different sintering aids, including Fe2O 3, Fe(NO3)3·9H2O, Y 2O3+A12O3 and MgO+Al 2O3+SiO2, on the nitridation of reaction bonded Si3N4/BN ceramics were conducted at 1350°C for 2h. Results indicate that the addition of sintering aids could facilitate the nitridation process resulting in higher nitridation percent due to the reactions between sintering aids and surface silica on silicon powder. When 5wt.\% Of Y2O3 and 2wt.\% Al2O3 were added, the nitridation percent reached to 94.4\%. The addition of sintering aids has obvious effect on the ratio of α-Si3N4/β- Si3N4. The increase of β-Si3N4 ratio was attributed to the direct reaction of silicon with nitrogen.",

keywords = "Phase composition, Reaction bonded, Silicon, Sintering aids",

author = "Tiesong Lin and Dechang Jia",

year = "2007",

doi = "10.4028/0-87849-456-1.1497",

language = "英语",

volume = "353-358",

pages = "1497--1500",

journal = "Key Engineering Materials",

issn = "1013-9826",

publisher = "Trans Tech Publications Ltd",

number = "PART 3",

note = "Asian Pacific Conference for Fracture and Strength (APCFS'06) ; Conference date: 22-11-2006 Through 25-11-2006",

}

TY - JOUR

T1 - Influence of sintering aids on the nitridation of reaction bonded Si 3N4/BN ceramics

AU - Lin, Tiesong

AU - Jia, Dechang

PY - 2007

Y1 - 2007

N2 - The influences of different sintering aids, including Fe2O 3, Fe(NO3)3·9H2O, Y 2O3+A12O3 and MgO+Al 2O3+SiO2, on the nitridation of reaction bonded Si3N4/BN ceramics were conducted at 1350°C for 2h. Results indicate that the addition of sintering aids could facilitate the nitridation process resulting in higher nitridation percent due to the reactions between sintering aids and surface silica on silicon powder. When 5wt.% Of Y2O3 and 2wt.% Al2O3 were added, the nitridation percent reached to 94.4%. The addition of sintering aids has obvious effect on the ratio of α-Si3N4/β- Si3N4. The increase of β-Si3N4 ratio was attributed to the direct reaction of silicon with nitrogen.

AB - The influences of different sintering aids, including Fe2O 3, Fe(NO3)3·9H2O, Y 2O3+A12O3 and MgO+Al 2O3+SiO2, on the nitridation of reaction bonded Si3N4/BN ceramics were conducted at 1350°C for 2h. Results indicate that the addition of sintering aids could facilitate the nitridation process resulting in higher nitridation percent due to the reactions between sintering aids and surface silica on silicon powder. When 5wt.% Of Y2O3 and 2wt.% Al2O3 were added, the nitridation percent reached to 94.4%. The addition of sintering aids has obvious effect on the ratio of α-Si3N4/β- Si3N4. The increase of β-Si3N4 ratio was attributed to the direct reaction of silicon with nitrogen.

KW - Phase composition

KW - Reaction bonded

KW - Silicon

KW - Sintering aids

UR - https://www.scopus.com/pages/publications/36049044517

U2 - 10.4028/0-87849-456-1.1497

DO - 10.4028/0-87849-456-1.1497

M3 - 会议文章

AN - SCOPUS:36049044517

SN - 1013-9826

VL - 353-358

SP - 1497

EP - 1500

JO - Key Engineering Materials

JF - Key Engineering Materials

IS - PART 3

T2 - Asian Pacific Conference for Fracture and Strength (APCFS'06)

Y2 - 22 November 2006 through 25 November 2006

ER -