| 引用本文: | 盘毅,张术华,熊热元,等.(CH3)2SiCl2和N2H4 反应产物为先驱体制备Si/C/N纳米微粉.[J].国防科技大学学报,2000,22(1):100-103.[点击复制] |
| PAN Yi,ZHANG Shuhua,XIONG Reyuan,et al.Preparation of Si(C.N) Nano-size Powders from Precursor of Reaction Product between(CH3)2SiCl2 and N2H4[J].Journal of National University of Defense Technology,2000,22(1):100-103[点击复制] |
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| (CH3)2SiCl2和N2H4 反应产物为先驱体制备Si/C/N纳米微粉 |
| 盘毅, 张术华, 熊热元, 张长安 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 采用(CH3)2SiCl2和N2H4反应产物为先驱体, 在H2、NH3气条件下, 用化学气相裂解法制备出Si/C/N纳米复合微粉这一全新的合成体系。对温度、气体流量, H2/NH3的比例等合成工艺条件对微粉的性质、形貌、组成等的影响进行了较为系统的讨论, 并从热力学和动力学的角度初步讨论了产物裂解机理及组成的变化形成机理。所合成的Si/C/N微粉为无定型球状颗粒, N的含量从16.49%～26.75% 可调, 粒径最小达40nm。 |
| 关键词: 纳米 微粉 无定形 |
| DOI： |
| 投稿日期：1999-05-20 |
| 基金项目:国家部委基金资助项目(12.4.2.2) |
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| Preparation of Si(C.N) Nano-size Powders from Precursor of Reaction Product between(CH3)2SiCl2 and N2H4 |
| PAN Yi, ZHANG Shuhua, XIONG Reyuan, ZHANG Changan |
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(College of Aerospace and Materials Engineering，National Univ. of Defense Technology，Changsha 410073，China)
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| Abstract: |
| Using Low-molecular organosilazane[(CH3)2NHN]n as precursor, which is reaction product between (CH3)2SiCl2 and N2H4, Si/C/N ultrafine composite powder was synthesized by vapor reaction decomposition. The pyrolysis mechanism and reaction mechanism of gas-phase precursor under H2, NH3 atmosphere and the influence of the pyrolysis conditions(pyrolysis temperature, gas flowing rate, H2/NH3 ratio) on the morphological characteristics, the composition of the powder were discussed. Nano-powder is amorphous with 16.49%～26.75% Nitrogen, the least particle size about 40 nm. |
| Keywords: nano-size powders amorphous |
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