Lightweight and low thermal conductive material with porous Al_2O_3 nano structure

以Al纳米粒子为原料，采用加热法制备了中空的Al_2O_3纳米粒子。考察了加热条件对空心氧化铝纳米粒子的外径、内径、层厚和晶体结构的影响。证实了中空Al_2O_3纳米颗粒作为低导热材料的潜力。在此基础上，探讨了中空Al_2O_3纳米粒子应用于低导热材料和轻质材料的可能性。

Hollow Al_2O_3 nanoparticles were fabricated from Al nanoparticles by heating processing. Fabrication conditions of heating were examined for controlling of outer diameter, inner diameter, layer thickness, and crystal structure of hollow Al_2O_3 nanoparticles. Potential of hollow Al_2O_3 nanoparticles as low thermal conductive material was confirmed. Based on the obtained results, possibility of hollow Al_2O_3 nanoparticles was discussed for low thermal conductive materials and lightweight materials.