MgSiN2-Y2O3复合烧结助剂对Si3N4陶瓷力学及导热性能的影响

Cong Li; Bo Zhang; Jiabin Hu; Shenghe Wang; Zhongqi Shi

doi:10.14062/j.issn.0454-5648.20210534

MgSiN₂-Y₂O₃复合烧结助剂对Si₃N₄陶瓷力学及导热性能的影响

Translated title of the contribution: Effect of MgSiN₂-Y₂O₃ Sintering Aids on Mechanical Properties and Thermal Conductivity of Si₃N₄ Ceramics

Cong Li
, Bo Zhang
, Jiabin Hu
, Shenghe Wang
, Zhongqi Shi

School of Materials Science and Engineering

Xi'an Jiaotong University
State Grid Anhui Electric Power Co., Ltd.

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

6 Scopus citations

Abstract

Si₃N₄ ceramics were prepared via gas pressure sintering under nitrogen pressure of 1.0MPa at 1850℃ for 3h with Y₂O₃ and MgSiN₂ as sintering aids. The effects of MgSiN₂/Y₂O₃ mole ratio and their total amount on the porosity, microstructure, mechanical properties and thermal conductivity of Si₃N₄ ceramics were investigated. The results show that the growth of rod-like β-Si₃N₄ grains was more sufficient and the growth of abnormal grain decreased with the increase of Y₂O₃ content at the constant total content of MgSiN₂ and Y₂O₃. Si₃N₄ ceramics with the optimal properties were prepared at a molar ratio of MgSiN₂:Y₂O₃ of 5:2 and the total amount of sintering aids of 10.5%, having the bending strength and thermal conductivity of 510MPa and 67.01 W•m^--1•K^-1, respectively.

Translated title of the contribution	Effect of MgSiN₂-Y₂O₃ Sintering Aids on Mechanical Properties and Thermal Conductivity of Si₃N₄ Ceramics
Original language	Chinese (Traditional)
Pages (from-to)	2556-2562
Number of pages	7
Journal	Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society
Volume	49
Issue number	12
DOIs	https://doi.org/10.14062/j.issn.0454-5648.20210534
State	Published - Dec 2021

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@article{e7fd8627f7ab4575a27a8a5b7a570333,

title = "MgSiN2-Y2O3复合烧结助剂对Si3N4陶瓷力学及导热性能的影响",

abstract = "Si3N4 ceramics were prepared via gas pressure sintering under nitrogen pressure of 1.0MPa at 1850℃ for 3h with Y2O3 and MgSiN2 as sintering aids. The effects of MgSiN2/Y2O3 mole ratio and their total amount on the porosity, microstructure, mechanical properties and thermal conductivity of Si3N4 ceramics were investigated. The results show that the growth of rod-like β-Si3N4 grains was more sufficient and the growth of abnormal grain decreased with the increase of Y2O3 content at the constant total content of MgSiN2 and Y2O3. Si3N4 ceramics with the optimal properties were prepared at a molar ratio of MgSiN2:Y2O3 of 5:2 and the total amount of sintering aids of 10.5\%, having the bending strength and thermal conductivity of 510MPa and 67.01 W•m--1•K-1, respectively.",

keywords = "Fracture strength, Siliconnitride, Sintering aids, Thermal conductivity",

author = "Cong Li and Bo Zhang and Jiabin Hu and Shenghe Wang and Zhongqi Shi",

year = "2021",

month = dec,

doi = "10.14062/j.issn.0454-5648.20210534",

language = "繁体中文",

volume = "49",

pages = "2556--2562",

journal = "Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society",

issn = "0454-5648",

publisher = "Chinese Ceramic Society",

number = "12",

}

TY - JOUR

T1 - MgSiN2-Y2O3复合烧结助剂对Si3N4陶瓷力学及导热性能的影响

AU - Li, Cong

AU - Zhang, Bo

AU - Hu, Jiabin

AU - Wang, Shenghe

AU - Shi, Zhongqi

PY - 2021/12

Y1 - 2021/12

N2 - Si3N4 ceramics were prepared via gas pressure sintering under nitrogen pressure of 1.0MPa at 1850℃ for 3h with Y2O3 and MgSiN2 as sintering aids. The effects of MgSiN2/Y2O3 mole ratio and their total amount on the porosity, microstructure, mechanical properties and thermal conductivity of Si3N4 ceramics were investigated. The results show that the growth of rod-like β-Si3N4 grains was more sufficient and the growth of abnormal grain decreased with the increase of Y2O3 content at the constant total content of MgSiN2 and Y2O3. Si3N4 ceramics with the optimal properties were prepared at a molar ratio of MgSiN2:Y2O3 of 5:2 and the total amount of sintering aids of 10.5%, having the bending strength and thermal conductivity of 510MPa and 67.01 W•m--1•K-1, respectively.

AB - Si3N4 ceramics were prepared via gas pressure sintering under nitrogen pressure of 1.0MPa at 1850℃ for 3h with Y2O3 and MgSiN2 as sintering aids. The effects of MgSiN2/Y2O3 mole ratio and their total amount on the porosity, microstructure, mechanical properties and thermal conductivity of Si3N4 ceramics were investigated. The results show that the growth of rod-like β-Si3N4 grains was more sufficient and the growth of abnormal grain decreased with the increase of Y2O3 content at the constant total content of MgSiN2 and Y2O3. Si3N4 ceramics with the optimal properties were prepared at a molar ratio of MgSiN2:Y2O3 of 5:2 and the total amount of sintering aids of 10.5%, having the bending strength and thermal conductivity of 510MPa and 67.01 W•m--1•K-1, respectively.

KW - Fracture strength

KW - Siliconnitride

KW - Sintering aids

KW - Thermal conductivity

UR - https://www.scopus.com/pages/publications/85121536831

U2 - 10.14062/j.issn.0454-5648.20210534

DO - 10.14062/j.issn.0454-5648.20210534

M3 - 文章

AN - SCOPUS:85121536831

SN - 0454-5648

VL - 49

SP - 2556

EP - 2562

JO - Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society

JF - Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society

IS - 12

ER -

MgSiN₂-Y₂O₃复合烧结助剂对Si₃N₄陶瓷力学及导热性能的影响

Abstract

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