In situ measurement of combustion wave propagation during combustion synthesis of α-Si3N4 powder

被引：3

作者：

Wang, Liang ^{[1
,2
]}

Yang, Zengchao ^{[1
,2
]}

Li, Jiangtao ^{[1
]}

机构：

[1] Chinese Acad Sci, Tech Inst Phys & Chem, CAS Key Lab Cryogen, Beijing, Peoples R China

[2] Chinese Acad Sci, Tech Inst Phys & Chem, CAS Key Lab Cryogen, Beijing 100190, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2023年 / 106卷 / 07期

关键词：

combustion synthesis; discrete combustion; silicon nitride; SILICON-NITRIDE; SI3N4; SHS;

D O I：

10.1111/jace.19084

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：

alpha-Si3N4 powder was prepared by combustion synthesis method. The propagation characteristics of combustion wave were investigated by thermocouple temperature measurement and "resistance-combustion wave displacement response device." The results show that the combustion reaction takes place in a narrow area, and there is a maximum temperature gradient of 180 degrees C/mm in the combustion front. The "resistance-combustion wave displacement response device" was innovatively used to realize the in situ measurement of combustion wave propagation process. The test results showed the pulse combustion mode in which the combustion front took 10 s as a cycle, and the quantitative data of Si-N-2 discrete combustion characteristics were obtained for the first time.

引用

页码：4023 / 4027

页数：5

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