Yttrium Oxide-Assisted CRN Synthesis of Silicon Oxynitride Powders with Controlled Morphology

Yao Zhou; Qian Liu; Hu Zhou; Jiandong Zhuang

doi:10.1111/jace.12579

Yttrium Oxide-Assisted CRN Synthesis of Silicon Oxynitride Powders with Controlled Morphology

Yao Zhou, Qian Liu^*, Hu Zhou, Jiandong Zhuang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Si₂N₂O powders were synthesized at low temperatures by a Y₂O₃-assisted-carbothermal reduction nitridation (CRN) with mesoporous silica/carbon composite as raw material. Experimental results showed that with the addition of Y₂O₃, the CRN reaction temperature decreased from 1380°C to 1250°C. The mechanism for Y₂O₃ reducing the CRN temperature was discussed in detail. It was found that the occurrence of Si₂N₂O at low temperatures was due to the formation of an eutectic intermediate phase as Y₂SiO₅, which was the reaction product of Y ₂O₃ and mesoporous SiO₂. In addition, spherical and rod-like Si₂N₂O powders were found to be readily obtained by selecting the mesoporous silica/carbon composite precursors with mesoporous silica spheres and rod-like SBA-15, respectively.

Original language	English
Pages (from-to)	3650-3655
Number of pages	6
Journal	Journal of the American Ceramic Society
Volume	96
Issue number	11
DOIs	https://doi.org/10.1111/jace.12579
Publication status	Published - Nov 2013
Externally published	Yes

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title = "Yttrium Oxide-Assisted CRN Synthesis of Silicon Oxynitride Powders with Controlled Morphology",

abstract = "Si2N2O powders were synthesized at low temperatures by a Y2O3-assisted-carbothermal reduction nitridation (CRN) with mesoporous silica/carbon composite as raw material. Experimental results showed that with the addition of Y2O3, the CRN reaction temperature decreased from 1380°C to 1250°C. The mechanism for Y2O3 reducing the CRN temperature was discussed in detail. It was found that the occurrence of Si2N2O at low temperatures was due to the formation of an eutectic intermediate phase as Y2SiO5, which was the reaction product of Y 2O3 and mesoporous SiO2. In addition, spherical and rod-like Si2N2O powders were found to be readily obtained by selecting the mesoporous silica/carbon composite precursors with mesoporous silica spheres and rod-like SBA-15, respectively.",

author = "Yao Zhou and Qian Liu and Hu Zhou and Jiandong Zhuang",

year = "2013",

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doi = "10.1111/jace.12579",

language = "English",

volume = "96",

pages = "3650--3655",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

publisher = "Wiley-Blackwell",

number = "11",

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TY - JOUR

T1 - Yttrium Oxide-Assisted CRN Synthesis of Silicon Oxynitride Powders with Controlled Morphology

AU - Zhou, Yao

AU - Liu, Qian

AU - Zhou, Hu

AU - Zhuang, Jiandong

PY - 2013/11

Y1 - 2013/11

N2 - Si2N2O powders were synthesized at low temperatures by a Y2O3-assisted-carbothermal reduction nitridation (CRN) with mesoporous silica/carbon composite as raw material. Experimental results showed that with the addition of Y2O3, the CRN reaction temperature decreased from 1380°C to 1250°C. The mechanism for Y2O3 reducing the CRN temperature was discussed in detail. It was found that the occurrence of Si2N2O at low temperatures was due to the formation of an eutectic intermediate phase as Y2SiO5, which was the reaction product of Y 2O3 and mesoporous SiO2. In addition, spherical and rod-like Si2N2O powders were found to be readily obtained by selecting the mesoporous silica/carbon composite precursors with mesoporous silica spheres and rod-like SBA-15, respectively.

AB - Si2N2O powders were synthesized at low temperatures by a Y2O3-assisted-carbothermal reduction nitridation (CRN) with mesoporous silica/carbon composite as raw material. Experimental results showed that with the addition of Y2O3, the CRN reaction temperature decreased from 1380°C to 1250°C. The mechanism for Y2O3 reducing the CRN temperature was discussed in detail. It was found that the occurrence of Si2N2O at low temperatures was due to the formation of an eutectic intermediate phase as Y2SiO5, which was the reaction product of Y 2O3 and mesoporous SiO2. In addition, spherical and rod-like Si2N2O powders were found to be readily obtained by selecting the mesoporous silica/carbon composite precursors with mesoporous silica spheres and rod-like SBA-15, respectively.

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U2 - 10.1111/jace.12579

DO - 10.1111/jace.12579

M3 - Article

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JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 11

ER -

Yttrium Oxide-Assisted CRN Synthesis of Silicon Oxynitride Powders with Controlled Morphology

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