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Al_5O_6N纳米粉体的制备与表征(英文)
作者:王作山 刘建勋 李凤生  
单位:南京理工大学国家特种超细粉体工程技术研究中心 南京理工大学国家特种超细粉体工程技术研究中心 南京理工大学国家特种超细粉体工程技术研究中心 南京210094 中北大学粉体工程研究中心 太原030051 南京210094 南京210094 
关键词:冲击波等离子体  铝化炸药  氧化  氧氮化铝纳米粉体  团聚 
分类号:TB383.1
出版年,卷(期):页码:2008,36(5):580-583
DOI:
摘要:

在水介质保护下,以三硝基甲苯和铝粉为原料用冲击波等离子体技术由铝化炸药爆炸生成了碳/Al5O6N混合粉体,经过高温氧化除碳,获得了纯立方Al5O6N粉体。利用X射线衍射、Raman光谱、高分辨率透射电镜等对碳/Al5O6N混合粉体和纯Al5O6N粉体进行了分析。用差热-热重分析确定了最佳氧化除碳温度。结果表明:碳/Al5O6N混合粉体的最佳氧化除碳温度为600℃,煅烧1 h后可得到球形立方相Al5O6N粉体,平均粒径为30~40 nm,无明显团聚。冲击波等离子体制备纳米粉体时,由于水介质的强制快冷,可减少粉体生长的时间,控制粉体的团聚。

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Cubic Al5O6N powder was prepared after oxidation to remove carbon in carbon/ Al5O6N mixed powder synthesized by a novel strategy called shock wave plasma technique,using trinitrotoluene(TNT) and aluminum powder as raw materials and water as protection medium.The mixed powder and Al5O6N powder were characterized by X-ray diffraction,Raman spectrum and high-resolution transmission electron microscopy.The optimum calcining temperature of carbon/ Al5O6N mixed powder was deter-mined as 600 ℃ according to differential thermal-thermogravimetric analysis.Pure cubic Al5O6N powder with uniform spherical shape prepared after calcination at 600 ℃ for 1 h has an average diameter of 30-40 nm.The agglomeration of Al5O6N nanopowder prepared by the shock wave plasma technique can be controlled through water fast cooling to shorten the growth time.

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基金项目:
江苏省博士后基金(0502021C)资助项目
作者简介:
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参考文献:

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