Effect of the diluent on combustion synthesis of silicon nitride

被引：4

作者：

Li, Fei ^{[1
]}

Cui, Wei ^{[1
,2
]}

Tian, Zhaobo ^{[3
]}

Zhang, Jie ^{[1
]}

Du, Songmo ^{[1
]}

Chen, Zhanglin ^{[1
]}

Zhang, Shijia ^{[1
]}

Chen, Kexin ^{[1
]}

Liu, Guanghua ^{[1
]}

机构：

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

[2] Foshan Southern China Inst New Mat, Foshan 528000, Guangdong, Peoples R China

[3] Southern Univ Sci & Technol, Sch Microelect, Shenzhen, Peoples R China

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2022年 / 19卷 / 06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：

combustion synthesis; diluent; alpha-phase content; SI3N4; BETA-SI3N4;

D O I：

10.1111/ijac.14142

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 powders were prepared by combustion synthesis with 1- and 3-mu m alpha-Si3N4, beta-Si3N4 diluent and BN inert diluent. The maximum temperatures of samples with boron nitride (BN) as a diluent are about 1500-1600 degrees C lower than that of samples with alpha-Si3N4 and beta-Si3N4 as diluents are about 1600-1800 degrees C. Moreover, the newly formed alpha-Si3N4 contents in the synthesized products with BN as diluent over 90 wt% are much higher than those with alpha-Si3N4 and beta-Si3N4 as diluent about 20-40 wt%. The strip-like alpha-Si3N4, rod-like beta-Si3N4 grains, and radiative shaped grains can be observed in the synthesized products. Finally, the effect of the diluent on the alpha-phase content of combustion synthesized Si3N4 is discussed, which provides key guidance for preparing Si3N4 powders with high alpha-phase content.

引用

页码：2957 / 2962

页数：6

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