| 激光气相合成Si/C/N纳米复合粉 |
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| 引用本文： | 潘正伟,李华伦.激光气相合成Si/C/N纳米复合粉[J].复合材料学报,1997,14(2):35-39. |
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| 作者姓名： | 潘正伟 李华伦 |
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| 作者单位： | 西北工业大学凝固技术国家重点实验室 |
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| 摘 要： | 本文以大功率CO2激光器为能源,以廉价的六甲基二硅胺烷(CH3)3Si]2NH(简称HMDS)和NH3(加或不加)为原料,合成出纳米非晶Si/C/N复合粉末。研究了HMDS流量和NH3对粉末组成的影响。结果表明:随HMDS流量(1000～2000ml/min)的升高,粉末的碳含量稍微降低,氢含量稍微升高,而硅、氮含量基本不变。加入NH3可大幅度降低粉末的碳含量,提高氮含量。粉末的粒径分布范围为10～50nm,为非晶态。在实验范围内,粉末的制备产率为62～113g/h.
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| 关 键 词： | 激光 六甲基二硅胺烷 NH3 Si/C/N纳米复合粉 |
| 收稿时间： | 1996-09-10 |
| 修稿时间： | 1996-10-31 |
SYNTHESIS OF Si/C/N NANOCOMPOSITE POWDERS BY LASER INDUCED GAS PHASE REACTION |
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| Pan Zhengwei,Li Hualun,Zhang Litong.SYNTHESIS OF Si/C/N NANOCOMPOSITE POWDERS BY LASER INDUCED GAS PHASE REACTION[J].Acta Materiae Compositae Sinica,1997,14(2):35-39. |
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| Authors: | Pan Zhengwei Li Hualun Zhang Litong |
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| Affiliation: | State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072 |
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| Abstract: | Si/C/N nanocom posite powders were synthesized by irradiating a mixture of HMDS and NH3 with a high power CO2 laser. The influences of HMDS flow rate and NH3 on the powder composition were studied. The results show that increasing HMDS flow rate can decrease the carbon content, increase the hydrogen content, and keep the silicon and nitrogen content constant. The addition of NH3 can greatly decrease the carbon content, and increase the nitrogen content. The asformed powders are amorphous and the mean particle size is 10～50 nm. The production rate of the powder is 62～113 g/h. |
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| Keywords: | laser hexamethyldisilazane NH 3 Si/C/N nanocomposite powder |
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