| 摘要: |
| 为了探索固体火箭推进剂的新型燃烧剂,采用激光-感应复合加热法在CH4气和Ar气的气氛下制备了碳包覆铝纳米粒子。对这种纳米粒子进行了X射线衍射(XRD)、透射电子显微镜(TEM)和高分辨透射电镜(HRTEM)的物相、形貌和结构分析,结果表明,该纳米粒子具有明显的核壳结构。差热分析(DTA)表明了碳包覆纳米铝粉在氧气氛中540℃左右剧烈氧化。简要讨论了碳包覆铝纳米颗粒的形成过程,即碳原子没有溶解在纳米铝颗粒内部,而是在铝颗粒的表面成核长大。 |
| 关键词: 固体推进剂 燃烧剂 碳包覆 纳米铝粉 激光-感应复合加热法 |
| DOI： |
| 分类号:V512 |
| 基金项目:国家自然科学基金资助项目(50471061) |
|
| Preparation of carbon-coated Al nanopowders by laser-induction complex heating method |
|
ZHANG Xiao-ta1, SONG Wu-lin2, GUO Lian-gui3, HU Mu-lin4, XIE Chang-sheng5
|
|
1.State Key Lab.of Plastic Forming Simulation and Die and Mould Technology,Huazhong Univ.of Science and Technology,Wuhan,430074,Chian;2.State Key Lab.of Plastic Forming Simulation and Die and Mould Technology,Huazhong Univ.of Science and Technology,Wuhan,430075,Chian;3.State Key Lab.of Plastic Forming Simulation and Die and Mould Technology,Huazhong Univ.of Science and Technology,Wuhan,430076,Chian;4.State Key Lab.of Plastic Forming Simulation and Die and Mould Technology,Huazhong Univ.of Science and Technology,Wuhan,430077,Chian;5.State Key Lab.of Plastic Forming Simulation and Die and Mould Technology,Huazhong Univ.of Science and Technology,Wuhan,430078,Chian
|
| Abstract: |
| To explore new combustion agents of solid rocket propellants,carbon-coated Al nanoparticles have been obtained by laser-induction complex heating method in a mixture of methane gas and Ar gas atmosphere.The as-prepared nanoparticles with clear core-shell structure were found by analysis of phases,morphologies and strutural features with X-ray diffraction,transmission electron microscopy and high-resolution transmission electron microscopy Differential thermal analysis showed carbon-coated Al nanopowders were oxidated acutely about at 540℃ in oxygen atmosphere.The pathway for the carbon-coated Al nanoparticles formation that C atoms are not dissolved into Al nanoparticles but directly transformed into the graphitic coating on the surface of Al was discussed briefly. |
| Key words: Solid propellant Combustion agent Carbon-coated+ Al nanopowder+ Laser-induction complex heating method+ |
