Preparation and mechanism of nanometer Al5O6N via shock wave plasma technique
Cubic Al5O6N nanoparticles were synthesized via a novel strategy called shock wave plasma technique, using trinitrotoluene(TNT) and aluminum powder as raw materials and water as protection medium. The precursor was engendered firstly during the detonation of composite dynamite. The Al5O6N nanoparticle was attained through calcining the precursor under certain temperature to eliminate the carbon. Respectively, X-ray diffraction Raman spectrum and High-Resolution Transmission Electron Microscope were employed to characterize the precursor and the as-synthesized product. The calcining temperature schedule of carbon/ Al5O6N precursor was decided through DTA / TG analysis. A possible reaction mechanism was also proposed preliminarily. The results indicate that the precursor is a kind of compound containing cubic Al5O6N nanocrystal and disordered graphite; the as-synthesized product is pure cubic Al5O6N nanocrystal with uniform spherical shape and average diameter of 30nm. The lattice parameters calculated by X-ray methods are consistent completely with the standard cubic Al5O6N(JCPDS 48-0686). The carbon exerts multifunction, including holding back effectively the growth and conglomeration of nanometer particle and preventing the oxidation of Al5O6N under high temperature. The reaction route is simple and rapid, which can be extended to fabricate other nanomaterials.
shock wave plasma nanometer Al5O6N Negative oxygen explosive explosion
王作山 李凤生 刘建勋
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;中北大学化学与环境学院 太原,030051 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
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）