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In this research, cold compaction behavior and pressureless sinterability of   WC, WC-10%wtCu and WC-30%wtCu powders were investigated. WC and WC/Cu powders   were milled in a planetary ball mill for 20h. The milled powders were cold   compacted at 100, 200, 300 and 400 MPa pressures. The compressibility   behavior of the powders was evaluated using the Heckel, Panelli-Ambrosio and   Ge models. The results showed that the Panelli-Ambrosio was the preferred   equation for description the cold compaction behavior of the milled WC and   WC-30%wtCu powders. Also, the most accurate model for describing the   compressibility of WC-10%wtCu powders was the Heckel equation. The cold   compacts were sintered at 1400°C. It was found that by increasing the cold   compaction pressure of powder compacts before sintering, the sinterability of   WC-30%wtCu powder compacts was enhanced. However, the cold compaction   magnitude was not affected significantly on the sinterability of WC and   WC-10%wtCu powders. The microstructural investigations of the sintered   samples by Scanning Electron Microscopy (SEM) confirmed the presence of   porosities at the interface of copper-tungsten carbide phases

Cold compaction behavior and pressureless sinterability of ball milled WC and WC/Cu powders