Synthesis of Si3N4-TiN-SiC composites by combustion reaction under high nitrogen pressures

Xinghong Zhang; Xiaodong He; Jiecai Han; Guiqing Chen

Synthesis of Si₃N₄-TiN-SiC composites by combustion reaction under high nitrogen pressures

Xinghong Zhang^*
, Xiaodong He
, Jiecai Han
, Guiqing Chen

^*Corresponding author for this work

School of Astronautics

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

Abstract

Si₃N₄-TiN-SiC composites were synthesized from TiSi₂ and SiC mixtures via the combustion reaction under high nitrogen pressure. The nitridation mechanism of TiSi₂ was analyzed. The results show that the nitridation of TiSi₂ produced TiN and Si firstly, and Si₃N₄ phase was formed by the further nitriding of Si. The molten eutectic phase and its agglomeration between Si and TiSi₂ formed one core-shell structure and affected the nitridation process. Under higher nitrogen pressure, the nitridation reaction was complete and the relatively dense Si₃N₄-TiN-SiC composites obtained. TEM observation revealed inhomogeneous Si₃N₄ grain size, amorphous phase, cavities, microcracks and dislocations, and graphite from the nitridation of SiC in the microstructure.

Original language	English
Pages (from-to)	165-172
Number of pages	8
Journal	Key Engineering Materials
Volume	217
State	Published - 2002
Event	1st Sino-Russian Workshop on Self-Propagating High Temperature Synthesis - Beijing, China Duration: 21 Sep 2000 → 24 Sep 2000

Keywords

Combustion Synthesis
Composites
Microstructure-Final
SHS
SiC
SiN
Ti N

Cite this

@article{e13497f9fec34439a247984b1d40ebb4,

title = "Synthesis of Si3N4-TiN-SiC composites by combustion reaction under high nitrogen pressures",

abstract = "Si3N4-TiN-SiC composites were synthesized from TiSi2 and SiC mixtures via the combustion reaction under high nitrogen pressure. The nitridation mechanism of TiSi2 was analyzed. The results show that the nitridation of TiSi2 produced TiN and Si firstly, and Si3N4 phase was formed by the further nitriding of Si. The molten eutectic phase and its agglomeration between Si and TiSi2 formed one core-shell structure and affected the nitridation process. Under higher nitrogen pressure, the nitridation reaction was complete and the relatively dense Si3N4-TiN-SiC composites obtained. TEM observation revealed inhomogeneous Si3N4 grain size, amorphous phase, cavities, microcracks and dislocations, and graphite from the nitridation of SiC in the microstructure.",

keywords = "Combustion Synthesis, Composites, Microstructure-Final, SHS, SiC, SiN, Ti N",

author = "Xinghong Zhang and Xiaodong He and Jiecai Han and Guiqing Chen",

year = "2002",

language = "英语",

volume = "217",

pages = "165--172",

journal = "Key Engineering Materials",

issn = "1013-9826",

publisher = "Trans Tech Publications Ltd",

note = "1st Sino-Russian Workshop on Self-Propagating High Temperature Synthesis ; Conference date: 21-09-2000 Through 24-09-2000",

}

TY - JOUR

T1 - Synthesis of Si3N4-TiN-SiC composites by combustion reaction under high nitrogen pressures

AU - Zhang, Xinghong

AU - He, Xiaodong

AU - Han, Jiecai

AU - Chen, Guiqing

PY - 2002

Y1 - 2002

N2 - Si3N4-TiN-SiC composites were synthesized from TiSi2 and SiC mixtures via the combustion reaction under high nitrogen pressure. The nitridation mechanism of TiSi2 was analyzed. The results show that the nitridation of TiSi2 produced TiN and Si firstly, and Si3N4 phase was formed by the further nitriding of Si. The molten eutectic phase and its agglomeration between Si and TiSi2 formed one core-shell structure and affected the nitridation process. Under higher nitrogen pressure, the nitridation reaction was complete and the relatively dense Si3N4-TiN-SiC composites obtained. TEM observation revealed inhomogeneous Si3N4 grain size, amorphous phase, cavities, microcracks and dislocations, and graphite from the nitridation of SiC in the microstructure.

AB - Si3N4-TiN-SiC composites were synthesized from TiSi2 and SiC mixtures via the combustion reaction under high nitrogen pressure. The nitridation mechanism of TiSi2 was analyzed. The results show that the nitridation of TiSi2 produced TiN and Si firstly, and Si3N4 phase was formed by the further nitriding of Si. The molten eutectic phase and its agglomeration between Si and TiSi2 formed one core-shell structure and affected the nitridation process. Under higher nitrogen pressure, the nitridation reaction was complete and the relatively dense Si3N4-TiN-SiC composites obtained. TEM observation revealed inhomogeneous Si3N4 grain size, amorphous phase, cavities, microcracks and dislocations, and graphite from the nitridation of SiC in the microstructure.

KW - Combustion Synthesis

KW - Composites

KW - Microstructure-Final

KW - SHS

KW - SiC

KW - SiN

KW - Ti N

UR - https://www.scopus.com/pages/publications/0036166649

M3 - 会议文章

AN - SCOPUS:0036166649

SN - 1013-9826

VL - 217

SP - 165

EP - 172

JO - Key Engineering Materials

JF - Key Engineering Materials

T2 - 1st Sino-Russian Workshop on Self-Propagating High Temperature Synthesis

Y2 - 21 September 2000 through 24 September 2000

ER -

Synthesis of Si₃N₄-TiN-SiC composites by combustion reaction under high nitrogen pressures

Abstract

Keywords

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