液相化学法制备纳米铝粉及其表征

为了得到微结构可控的纳米铝粉，尝试用液相化学法制备纳米铝粉，并采用X射线衍射(XRD)仪、场发射扫描电子显微镜(FESEM)和能谱仪(EDS)对其进行表征。研究了原料摩尔比、催化剂用量和分解温度对铝粉形貌、粒径和组成的影响。在此基础上，优化出最佳制备工艺参数，当AlCl₃∶LiAlH₄摩尔比为1∶6，催化剂用量为0.04 mL，分解温度为110 ℃时，制得的纳米铝粉为类球形，平均粒径约为50 nm，杂质Cl、Ti含量少。

Preparation of Aluminum Nanoparticles by Liquid Chemical Method and Their Characterization

Aluminum nanoparticles are tried to be prepared by liquid chemical method to obtain their controlled microstructures. X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and energy dispersive spectrometer (EDS) are applied to characterize the aluminum nanoparticles. The effects of processing parameters including molar ratio of AlCl₃ to LiAlH₄, the adding amount of catalyst and the decomposition temperature on the structure, morphology and composition of the aluminum nanoparticles are studied in detail. The optimal preparation condition is achieved when the molar ratio of AlCl₃ to LiAlH₄ is 1∶6, the adding amount of catalyst is 0.04 mL, and the decomposition temperature is 110 ℃. The obtained aluminum is spherical-like with an average size of 50 nm and contains the minimum impurity elements Cl and Ti.