纳米材料是具有多种优异性能的新型材料 ,有广阔的应用前景 而纳米粉体则是构成纳米材料的基础 ,因此它的制备也就成为纳米材料制备的关键 本文对国内外纳米材料制备的研究动态进行了综述 ,以制备纳米Al2 O3粉体为例 ,论述了纳米粉体的各种制备技术 ,着重论述了液相合成技术、气相合成技术和固相合成技术 ,并评述了各种制备技术的优缺点 Nanomaterials are new materials with a variety of excellent properties and have broad application prospects. Nanometer powders are the basis of nanomaterials, so its preparation will become the key to the preparation of nanomaterials.In this paper, the preparation of nanomaterials at home and abroad In this paper, the preparation and preparation of nano-Al 2 O 3 powders are reviewed. Various preparation techniques of nano-powders are discussed. The liquid phase synthesis, gas phase synthesis and solid phase synthesis are discussed emphatically. Various preparation techniques The advantages and disadvantages