一种利用激光3D打印制备三维连通钨基复合材料及方法，属于难熔金属复合材料3D打印领域。该方法包括以下步骤：1 )将钨粉与第二相金属或合金粉末按照一定比例进行机械混合；2 )利用激光3D打印技术，选择较高的激光功率并配合适宜的扫描速率和扫描间距进行成形；3 )对成形后的钨基复合材料进行表面处理，获得最终的三

维连通钨基复合材料。本发明所制备的钨基复合材料中相对密度高，孔隙和裂纹极少，复合材料中钨相为三维连通结构，第二相金属或合金被封闭在三维连通的钨相之中。

A method for preparing 3D connected W-based composite by 3D printing, belong to refractory field. Mixed the W powder and the second phase powder together as the ratio through ball milling, performed the mixed powders through laser 3D printing with high laser power, polish the surface of the components. the W based cmoposites show high relative denstiy and low porosity and crack.