Abstract:Nanopowders have unique properties and have been used extensively in many fields.In this paper,the preparationmethods of nanopowders,such asmechanical method,physical method and chemical method are reviewed in detail.With emphasized the physical and chemical methods,all kinds methods are introduced in terms of classification and their advantages and disadvantages.The future development of nanopowder preparation is also pointed out.
Key words:nanopowder; preparation methods; mechanical method; physical method;chemical method
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