Synthesis of well‐dispersed β‐Si3N4 with equiaxed structures using carbothermal reduction–nitridation method
Synthesis of well‐dispersed β‐Si3N4 with equiaxed structures using carbothermal reduction–nitridation method
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DOI：
10.1111/jace.15078
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发表时间：
2017-12
影响因子：
3.9
通讯作者：
Siyuan Sun;Yiyao Ge;Zhaobo Tian;Jie Zhang;Kexin Chen;Z. Xie
中科院分区：
文献类型：
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作者：
Siyuan Sun;Yiyao Ge;Zhaobo Tian;Jie Zhang;Kexin Chen;Z. Xie
在CaF2添加剂的辅助下，采用碳热还原-氮化（CRN）策略制备了分散良好、具有新颖等轴结构和优异晶体完整性的β-Si3N4粉末。阐明了氮化硅颗粒在CRN过程中的生长机理。结果表明，SiO2和CaF2添加剂形成的液相对等轴β-Si3N4的形成至关重要，在适当的CaF2含量下，具有纯β相的Si3N4粉末具有较好的分散性和晶体完整性。这篇文章受版权保护。版权所有。
Well-dispersed β-Si3N4 powders with a novel equiaxed structure and eminent crystal integrity were prepared by carbothermal reduction–nitridation (CRN) strategy with the assistance of CaF2 additive. The growth mechanism of Si3N4 particles in the CRN process was elucidated. It is proposed that the liquid phase formed by SiO2 and CaF2 additive is crucial to the formation of equiaxed β-Si3N4, and with an appropriate content of CaF2, Si3N4 powders with pure β phase, superior dispersity and crystal integrity can be obtained. This article is protected by copyright. All rights reserved.