本发明提供了一种制备梯度多孔钨的方法,属于多孔材料制备技术领域。将高纯钨粉采用气流磨进行分散处理后，可将原始钨粉的团聚体打开，得到完全分散的钨粉，再经分级处理后，可获得不同粒径大小的窄粒度分布钨粉，通过选取处理后的不同粒度大小的钨粉进行搭配并采用铺粉-压制-烧结或叠层铺粉-热压烧结可制备梯度多孔钨。该方法所制备的梯度多孔钨孔隙特性可控、各层孔径大小及分布均匀，孔隙连通度好。通过选取两种或多种不同粒度的粉末进行搭配可灵活控制最终梯度多孔钨制品的层数及各层的孔隙特性。

The invention provides a method for preparing gradient porous tungsten, which belongs to the technical field of porous material preparation. Scatter high pure tungsten powder with jet mill processing, can open the original aggregate of tungsten powder, fully dispersed tungsten powder, after sizing processing can obtain different narrow particle size distribution of the particle size of tungsten powder, through the selection of processing of different particle size of tungsten powder after collocation and pressed by spread powder sintering or laminated spread powder hot pressing sintering porous tungsten gradient. The gradient porous tungsten prepared by this method has controllable pore characteristics, uniform pore size and distribution of each layer, and good pore connectivity. The number of layers and pore properties of each layer can be controlled flexibly by selecting two or more powders with different particle sizes.