Research progress of surface modification of ultra-fine powder

In the light of current problems in preparation and application of superfine powder,new methods of surface modification such as coating modification,chemical modification,mechanochemical modification,micro encapsulation modification,high energy modification,precipitation modification etc,are introduced.Common modification equipments and modification agents for the surface modification of superfine powder are introduced and their development trends are also pointed out.The influential factors of surface modification are discussed and the prospects of surface modification technology are forecasted.