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.