The relationship between pressing pressures and pressed densities of W powders with average size of 4

6

μm was investigated systemically by combining theoretical calculation with experimental analysis

and the equation was deducted based on Huang’s formation theory.According to the equation

the molding parameters were selected to prepare the W-15 Cu composites with W-skeleton sintered at high temperature and infiltration method.Microstructure of W-skeleton and the composites prepared was observed by SEM

and density

hardness and electric conductivity were measured.It can be found that after pressing

W powders with average size of 4

6

μm can follow the Huang’s formation theory.The Cu content in CuW composites prepared by isostatic cool pressing at 250 MPa and 1 850℃ reaches 15%

where electric conductivity

hardness（HB）and thermal conductivity reach 21.98 MS/m

221 and196 W·m

-1

·K（-1）

respectively.