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乙醇中鋯絲電爆炸法制備碳包覆ZrC納米顆粒
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南京理工大學(xué)瞬態(tài)物理重點(diǎn)實(shí)驗(yàn)室,南京理工大學(xué)瞬態(tài)物理重點(diǎn)實(shí)驗(yàn)室,南京理工大學(xué)瞬態(tài)物理重點(diǎn)實(shí)驗(yàn)室,,

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Fabrication of Carbon Encapsulated ZrC Nanoparticles by Electrical Explosion of Zr Wire in Ethanol
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Science and Technology on Transient Physics Laboratory,Nanjing University of Science Technology,Science and Technology on Transient Physics Laboratory,Nanjing University of Science Technology,Science and Technology on Transient Physics Laboratory,Nanjing University of Science Technology,Department of Criminal Science and Technology,Nanjing Forest Police College,Nanjing,Jiangsu,School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing

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    摘要:

    采用在有機(jī)液體中進(jìn)行金屬絲電爆炸的方法制備了碳包覆納米顆粒。以無水乙醇為介質(zhì),向高純度鋯絲中施加高壓脈沖電流,金屬絲在高密度電流的下迅速熔化、氣化、膨脹并爆炸,伴隨著高溫、高壓條件下碳的析出和反應(yīng)、包覆過程,制備出納米粉體顆粒,對電爆炸過程中的能量、電流、電壓進(jìn)行了測試和分析,通過XRD、TEM、HTEM等分析了產(chǎn)物特征。結(jié)果表明：產(chǎn)物為球狀碳包覆結(jié)構(gòu)的碳化鋯納米顆粒,粒徑分布在10-150nm之間；在4kv、8kv、12kv電壓下,產(chǎn)物平均粒徑分別為24.9nm、41.1nm、43.9nm。最后,對碳包覆納米ZrC顆粒的形成機(jī)理進(jìn)行了初步的探討。

    Abstract:

    The method of electrical explosion of metal wire in organic liquid was adopted to prepare carbon encapsulated nanoparticles. In the medium of absolute ethyl alcohol, under the high-voltage pulse current (HVPC), the high purity zirconium wire became fusion, gasification, expansion and explosion, accompanied with separating of carbon out of ethanol and reaction of carbon and zirconium, carbon encapsulated ZrC nanoparticles formed. The energy, voltage and current in the experiments were measured to analyze the influence of them on the products. The products were analyzed by X-ray diffraction technique (XRD), transmission electron microscopy (TEM) and high power transmission electron microscopy (HTEM). The results show that the carbon encapsulated ZrC nanoparticles were fabricated successfully. The diameter range between 10nm-150nm. For the voltage of 4kv, 8kv and 12kv, the average size of the products is 24.9nm, 41.4nm and 43.9nm, respectively. Finally, the procedure and mechanism of fabrication of the carbon encapsulated ZrC nanoparticles were discussed preliminarily.

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王金相,盧孚嘉,彭楚才,周楠,趙錚.乙醇中鋯絲電爆炸法制備碳包覆ZrC納米顆粒[J].稀有金屬材料與工程,2018,47(6):1749~1752.[Jinxiang Wang, Fujia Lu, Chucai Peng, Nan Zhou, Zheng Zhao. Fabrication of Carbon Encapsulated ZrC Nanoparticles by Electrical Explosion of Zr Wire in Ethanol[J]. Rare Metal Materials and Engineering,2018,47(6):1749~1752.]
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  • 收稿日期:2016-08-21
  • 最后修改日期:2016-10-17
  • 錄用日期:2016-11-10
  • 在線發(fā)布日期: 2018-09-06
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