Study on High-Density-Copper Grain-Refining Cu-W Composites
By detecting microstructures and properties of Cu-W composites, effects of powder composition, sintering temperature and compacting pressure on sintered billets were studied, and sintering mechanism of Cu-W powders was discussed. Effective rules of process parameters have been preliminarily obtained: Sintered billets of Cu-40W and Cu-50W had a low density when compacted at 200MPa, sintered below the melting point of copper, and density, hardness enlarged with sintering temperature increasing; Hardness, density, electrical conductivity of Cu-40W enlarged with compacting pressure when compacted above 600MPa, sintered at 1100°C; But when compacted at 800MPa, sintered at 1100°C, Cu-40W sintered billets had a density of 11.37g/cm3, relative density of 99.6%, closed to the theoretical value.
Xianghua Liu, Zhengyi Jiang and Jingtao Han
D. Q. Tan et al., "Study on High-Density-Copper Grain-Refining Cu-W Composites", Advanced Materials Research, Vols. 148-149, pp. 112-117, 2011