中文摘要：

有从 20 ～ 50 nm 的直径的艾尔 nanopowders 由 Al2O3 涂层使钝化被二条不同蒸发线路生产：感应的加热蒸发(IHE ) 和激光正式就职建筑群加热蒸发(LCHE ) 。nanopowders 的热性质被微分热分析(DTA ) 在干燥的氧环境调查。结果证明 LCHE 生产的艾尔 nanopowders 让氧化热含量改变 3.54 kJ/g 的(H) ，当 IHE 生产的艾尔的 H 是 1.18 kJ/g 时。这些 nanopowders 的阶段体质和微观结构用 X 光检查衍射(XRD ) 被揭示分析，传播电子显微镜学(TEM ) 和高分辨率的传播电子显微镜学(HRTEM ) 。结果证明二粉末有一样的作文并且意味着 Al2O3 涂层(35 nm ) 的粒子尺寸，以及厚度。缺点被 LCHE 在粒子的表面上观察。然而，缺点没被 IHE 被 HRTEM 在粒子的表面上检测。结果证明那在那里存在过多在由因为 nonequilibrium，状况由激光和缺点带了的 LCHE 的艾尔 nanopowders 的存储精力是过多的存储精力的存储区域。LCHE 由艾尔 nanopowders 组成的燃料显示出更高的精力水平和特定的推动。

英文摘要：

Al nanopowders with diameters ranging from 20 to 50 nm passivated by Al2O3 coatings were produced by two different evaporation routes： induction heating evaporation （IHE） and laser-induction complex heating evaporation （LCHE）. Thermal property of the nanopowders was investigated by differential thermal analysis （DTA） in dry oxygen environment. The results show that Al nanopowders produced by LCHE have the oxidation enthalpy change （AH） of 3.54 kJ/g, while the AH of A1 produced by IHE is 1.18 kJ/g. The phase constitution and microstructures of these nanopowders were revealed using X-ray diffraction （XRD） analysis, transmission electronic microscopy （TEM） and high-resolution transmission electronic microscopy （HRTEM）. The results show that the two powders have the same composition and mean particle size, as well as the thickness of Al2O3 coatings （3-5 nm）. Defects were observed on the surfaces of the particles by LCHE. However, the defects were not detected by HRTEM on the surfaces of the particles by IHE. The results prove that there exists excessive stored energy in Al nanopowders by LCHE because of the nonequilibrium condition brought by laser and the defects are the storage area of the excessive stored energy. Propellants composed ofAl nanopowders by LCHE show higher energy level and specific impulse.