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《材料导报》期刊社  2017, Vol. 31 Issue (18): 114-118    https://doi.org/10.11896/j.issn.1005-023X.2017.018.023
  材料研究 |
氧化硅形态对合成氮氧化硅粉体的影响*
李兵, 周子皓, 尹传强, 魏秀琴, 周浪
南昌大学光伏研究院/材料科学与工程学院,南昌 330031
Influence of Forms of SiO2 on the Morphology of Synthesized Si2N2O Powders
LI Bing, ZHOU Zihao, YIN Chuanqiang, WEI Xiuqin, ZHOU Lang
Institute of Photovoltaics/School of Materials Science and Engineering, Nanchang University, Nanchang 330031
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摘要 研究了使用SiO2为氧源合成氮氧化硅时,SiO2的结晶状态对氮氧化硅形貌的影响。实验使用的SiO2分别为气相白炭黑和晶体石英粉末,硅固体为平均粒径1.15 μm左右的粉末。使用X射线衍射仪对合成物进行物相分析,并用扫描电子显微镜观察其形貌。结果表明:使用气相白炭黑为氧源时,在1 380 ℃保温4 h的条件下,硅粉与气相白炭黑的物质的量比为2.0∶1~2.6∶1可得到纤维状氮氧化硅;以晶态石英为氧源时,在1 450 ℃保温4 h的条件下,固定硅粉与晶态石英的物质的量比为1.5∶1可得到颗粒状氮氧化硅。本工作通过对Si-N-O体系的热力学分析,讨论了不同形貌的氮氧化硅粉体的形成机制。
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李兵
周子皓
尹传强
魏秀琴
周浪
关键词:  氮氧化硅  晶态石英  气相白炭黑  氮氧化机制    
Abstract: The effect of the form of SiO2 on the morphology of synthesized silicon oxynitride was investigated when it was used as the oxidant. The fumed silica and crystalline quartz powders were used respectively, and the average particle size of silicon powders was 1.15 μm. Phase analysis was carried out with an X-ray diffractometer, and morphology observation was performed with a scanning electron microscope. The results show that when fumed silica was used as the oxidant, silicon oxynitride fibers were obtained when mixtures of oxidant and silicon powders were held at 1 380 ℃ for 4 h, and the molar ratio of oxidant to silicon was in the range of 2.0∶1—2.6∶1. When crystalline quartz was used as the oxidant, granular silicon oxynitride particles were obtained by hol-ding the mixture at 1 450 ℃ for 4 h, with the molar ratio of silicon to quartz fixed at 1.5∶1. The mechanisms for the formation of silicon oxynitride of different morphology were discussed, with the aid of thermodynamics analysis of the Si-N-O system.
Key words:  silicon oxynitride    crystalline quartz    fumed silica    oxynitridation mechanism
出版日期:  2017-09-25      发布日期:  2018-05-08
ZTFLH:  TQ174  
  O613.72  
基金资助: 江西省优势科技创新团队计划专项(20113BCB24007);有色金属及特色材料加工重点实验室开放基金(12KF-20)
通讯作者:  周浪:通讯作者,男,1962年生,博士,教授,研究方向为光伏材料与器件 E-mail:lzhou@ncu.edu.cn   
作者简介:  李兵:男,1992年生,硕士研究生,研究方向为氮化硅、氮氧化硅粉体合成 E-mail:libingncu@163.com
引用本文:    
李兵, 周子皓, 尹传强, 魏秀琴, 周浪. 氧化硅形态对合成氮氧化硅粉体的影响*[J]. 《材料导报》期刊社, 2017, 31(18): 114-118.
LI Bing, ZHOU Zihao, YIN Chuanqiang, WEI Xiuqin, ZHOU Lang. Influence of Forms of SiO2 on the Morphology of Synthesized Si2N2O Powders. Materials Reports, 2017, 31(18): 114-118.
链接本文:  
https://www.mater-rep.com/CN/10.11896/j.issn.1005-023X.2017.018.023  或          https://www.mater-rep.com/CN/Y2017/V31/I18/114
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