A novel method to synthesize pure-phase Si2N2O powders in a fluidized bed reactor
文献类型：期刊论文
| 作者 | Geng, Yuqi1,2; Zhao, Yuxiang1; Yue, Fen1,2; Zhu, Qingshan1,2,3; Xiang, Maoqiao1 |
| 刊名 | CERAMICS INTERNATIONAL
 |
| 出版日期 | 2022-11-15 |
| 卷号 | 48期号:22页码:33066-33071 |
| ISSN号 | 0272-8842 |
| 关键词 | Silicon oxynitride Powder preparation Precursor pyrolysis strategy Fluidized bed reactor Regulation of molar ratio of N O |
| DOI | 10.1016/j.ceramint.2022.07.239 |
| 英文摘要 | Si2N2O ceramic, an emerging functional and structural material, has a wide range of applications. However, the preparation of pure-phase Si2N2O powder remains challenging due to the mass transfer resistance and unde-sirable side reactions in the conventional methods. Herein, a novel molecular approach combined with the decomposition process has been developed to synthesize pure-phase Si2N2O powders. The hydrated Si(NH)2 precursors were synthesized through the chemical vapor deposition (CVD) of SiCl4, NH3, and humidified N2 in a fluidized bed reactor (FBR) in two steps. Then, the hydrated Si(NH)2 precursors were decomposed into amor-phous and subsequently transformed into crystalline powders under different temperatures and time. It was found that the molar ratio of N/O of the hydrolyzed Si(NH)2 can be controlled by N2 ventilation time and played an important role in synthesizing high pure Si2N2O powder. When it varied from 2.5:1 to 2:1, pure-phase Si2N2O powder was obtained after heat treatment at 1300-1500 degrees C, which features a big tolerance for N/O ratios. This newly developed method offered a chance for the preparation of high-quality Si2N2O powder with high efficiency and low cost. |
| WOS关键词 | SILICON OXYNITRIDE ; CARBOTHERMAL REDUCTION ; MECHANICAL-PROPERTIES ; OXIDATION RESISTANCE ; FABRICATION ; NITRIDATION ; COMPOSITES ; PRECURSOR ; CERAMICS ; CRYSTALLINITY |
| 资助项目 | National Natural Science Foundation of China[ZDBS-LY-JSC04] ; Basic Frontier Scientific Research of the CAS[YJKYYQ20210043] ; Scientific Instrument Developing Project of the CAS[292021000085] ; Youth Innovation Promotion Association of the CAS ; [22178348] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000868948500004 |
| 资助机构 | National Natural Science Foundation of China ; Basic Frontier Scientific Research of the CAS ; Scientific Instrument Developing Project of the CAS ; Youth Innovation Promotion Association of the CAS |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/55289]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Zhu, Qingshan; Xiang, Maoqiao |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Geng, Yuqi,Zhao, Yuxiang,Yue, Fen,et al. A novel method to synthesize pure-phase Si2N2O powders in a fluidized bed reactor[J]. CERAMICS INTERNATIONAL,2022,48(22):33066-33071. |
| APA | Geng, Yuqi,Zhao, Yuxiang,Yue, Fen,Zhu, Qingshan,&Xiang, Maoqiao.(2022).A novel method to synthesize pure-phase Si2N2O powders in a fluidized bed reactor.CERAMICS INTERNATIONAL,48(22),33066-33071. |
| MLA | Geng, Yuqi,et al."A novel method to synthesize pure-phase Si2N2O powders in a fluidized bed reactor".CERAMICS INTERNATIONAL 48.22(2022):33066-33071. |
入库方式： OAI收割
来源：过程工程研究所
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