Fabrication of W-Cu composite by resistance sintering under ultra-high pressure

Resistance sintering under ultra-high pressure was developed to fabricate W-Cu composite containing 5-80 v/o copper. The consolidation was carried out under pressure of 6-8 GPa and input power of 18-23 kW for 50 s. The densification effect and microstructure of these W-Cu composites were investigated. The effect of W particle size on sintering density was also studied. The micro-hardness was measured to evaluate the sintering effects.