Sintering behavior of spherical mono-sized tungsten powder

摘要

Inert gas atomized mono-sized tungsten powders were cold pressed at 130 MPa and then sintered in the temperature range (0.52-0.73) T-m for different times under hydrogen atmosphere. The sintering kinetic was monitored by measuring shrinkage and density evolution and compared with commercially reduced tungsten powder. The formation of particle contacts, neck growth evolution as well as changes of the spherical particle habit was investigated by SEM studies.