摘要：以硬脂酸、硝酸铝为原料,用硬脂酸凝胶法制备了Al₂O₃纳米粉末,运用差热-热重(DTA-TG)、傅立叶红外光谱对制备过程进行了表征;用X射线衍射(XRD)、透射电镜(TEM)和粒度仪对纳米粉末的粒径和形貌进行了表征。结果表明,该工艺方法简单,分散性较好。

关键词：氧化铝;纳米粉体;凝胶法;表征;

Abstract: Using stearic acid and aluminum nitrate as raw materials, theultrafine powder of Al₂O₃ is prepared by the stearic acid. The synthesisprocess is monitored by the IR spectra, the differential thermal analyzerand thermal gravimetric(DTA-TG). The structure and morphology of Al₂O₃ are characterized by the X-ray powder diffraction (XRD) ,transmissonelectron microscope(TEM) and diameter of powder measurement instruct-ment.The results show that the method is simple and good dispersivity.

Key words: alumina; nano-sized powder; gel method; characterization