Effect of additive content on the microstructure and room-temperature and high-temperature mechanical properties of Si3N4 ceramics

被引：1

作者：

Du, Songmo ^{[1
]}

Li, Fei ^{[1
]}

Zhang, Jie ^{[2
]}

Chen, Zhanglin ^{[1
]}

Zhang, Shijia ^{[1
]}

Zhao, Shuo ^{[1
]}

Zhao, Dengke ^{[1
]}

Fan, Binbin ^{[1
]}

Chen, Kexin ^{[3
]}

Liu, Guanghua ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Yongjiang Lab, Adv Ceram & Struct Ctr, Ningbo, Peoples R China

[3] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2025年 / 22卷 / 03期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

grain growth; mechanical property; silicon nitride; sintering additive content; two-step sintering; SILICON-NITRIDE CERAMICS; ABNORMAL GRAIN-GROWTH; PHASE-TRANSFORMATION; STRENGTH; EVOLUTION;

D O I：

10.1111/ijac.15013

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Si3N4 ceramics with uniform grain size distribution were fabricated using spark plasma sintering method and post-heat treatment. The effect of sintering additive content on the grain growth and room-temperature and high-temperature mechanical properties of Si3N4 ceramics were studied. By modulating the competitive growth of beta-Si3N4 grains along the basal and the prism planes, the grains in Si3N4 ceramics were homogeneous. The room-temperature and high-temperature flexural strength of the samples after post-heat treatment were tested. At temperature above 1300 degrees C, the samples with lower sintering additive content exhibit higher strength.

引用

页数：9

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