Synthesis of well-dispersed columnar Si3N4 using carbothermal reduction–nitridation method

Synthesis of well-dispersed columnar Si3N4 using carbothermal reduction–nitridation method

Si3N4 has attracted much attention as the thermally conductive fillers owing to its high thermal conductivity, high electrical resistivity and low dielectric loss. This paper presented the preparation of well-dispersed columnar Si3N4 particles by carbothermal reduction–nitridation (CRN) strategy wit...

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Main Authors: Sun, Si-Yuan, Wang, Qi, Ge, Yi-Yao, Tian, Zhao-Bo, Zhang, Jie, Xie, Zhi-Peng
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2020
Subjects:
Engineering::Materials
Si3N4
Thermal Applications
Online Access:https://hdl.handle.net/10356/137987
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1379872020-06-01T10:26:38Z Synthesis of well-dispersed columnar Si3N4 using carbothermal reduction–nitridation method Sun, Si-Yuan Wang, Qi Ge, Yi-Yao Tian, Zhao-Bo Zhang, Jie Xie, Zhi-Peng School of Materials Science & Engineering Center for Programmable Materials Engineering::Materials Si3N4 Thermal Applications Si3N4 has attracted much attention as the thermally conductive fillers owing to its high thermal conductivity, high electrical resistivity and low dielectric loss. This paper presented the preparation of well-dispersed columnar Si3N4 particles by carbothermal reduction–nitridation (CRN) strategy with assistance of unique CaF2 additive under an elevated N2 pressure. The average diameter of columnar particles was 4 μm and aspect ratio was 3. The speculation for the inherent growth mechanism of the Si3N4 particles was tentatively proposed. It was speculated that CaF2 could promote the formation of β-Si3N4 with columnar structure through a V-L-S (vapor-liquid-solid) route by forming Ca-containing liquid phase with SiO2. Moreover, appropriate content of CaF2 are beneficial for fabricating Si3N4 particles with good dispersity because of the proper the evaporation rate of Ca and F. 2020-04-21T05:24:49Z 2020-04-21T05:24:49Z 2018 Journal Article Sun, S.-Y., Wang, Q., Ge, Y.-Y., Tian, Z.-B., Zhang, J., & Xie, Z.-P. (2018). Synthesis of well-dispersed columnar Si3N4 using carbothermal reduction–nitridation method. Powder Technology, 331, 322-325. doi:10.1016/j.powtec.2018.03.046 0032-5910 https://hdl.handle.net/10356/137987 10.1016/j.powtec.2018.03.046 2-s2.0-85044439724 331 322 325 en Powder Technology © 2018 Elsevier B.V. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Materials
Si3N4
Thermal Applications
spellingShingle Engineering::Materials
Si3N4
Thermal Applications
Sun, Si-Yuan
Wang, Qi
Ge, Yi-Yao
Tian, Zhao-Bo
Zhang, Jie
Xie, Zhi-Peng
Synthesis of well-dispersed columnar Si3N4 using carbothermal reduction–nitridation method
description Si3N4 has attracted much attention as the thermally conductive fillers owing to its high thermal conductivity, high electrical resistivity and low dielectric loss. This paper presented the preparation of well-dispersed columnar Si3N4 particles by carbothermal reduction–nitridation (CRN) strategy with assistance of unique CaF2 additive under an elevated N2 pressure. The average diameter of columnar particles was 4 μm and aspect ratio was 3. The speculation for the inherent growth mechanism of the Si3N4 particles was tentatively proposed. It was speculated that CaF2 could promote the formation of β-Si3N4 with columnar structure through a V-L-S (vapor-liquid-solid) route by forming Ca-containing liquid phase with SiO2. Moreover, appropriate content of CaF2 are beneficial for fabricating Si3N4 particles with good dispersity because of the proper the evaporation rate of Ca and F.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Sun, Si-Yuan
Wang, Qi
Ge, Yi-Yao
Tian, Zhao-Bo
Zhang, Jie
Xie, Zhi-Peng
format Article
author Sun, Si-Yuan
Wang, Qi
Ge, Yi-Yao
Tian, Zhao-Bo
Zhang, Jie
Xie, Zhi-Peng
author_sort Sun, Si-Yuan
title Synthesis of well-dispersed columnar Si3N4 using carbothermal reduction–nitridation method
title_short Synthesis of well-dispersed columnar Si3N4 using carbothermal reduction–nitridation method
title_full Synthesis of well-dispersed columnar Si3N4 using carbothermal reduction–nitridation method
title_fullStr Synthesis of well-dispersed columnar Si3N4 using carbothermal reduction–nitridation method
title_full_unstemmed Synthesis of well-dispersed columnar Si3N4 using carbothermal reduction–nitridation method
title_sort synthesis of well-dispersed columnar si3n4 using carbothermal reduction–nitridation method
publishDate 2020
url https://hdl.handle.net/10356/137987
_version_ 1681058507749588992

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