ABSTRACT

A review of different subprocesses occuring during sintering of cemented carbides is given. Information on the reduction of oxides during the presintering stages is given as a result of mass spectrometric studies. The transfer of carbon between the gas phase and the porous body during solid state sintering is shown by sintering in gases of controlled carbon potentials. The influence of minor amounts of reactive elements on the sintering as measured by dilatometry is also indicated. The temperature for the formation of the liquid phase on heating and the solidification of the binder on cooling is indicated by thermal analysis and dilatometry.