Verfahren zur Herstellung von Hartmetallformkoerpern mit einem definierten Gradienten der Bindemetallphase

The invention relates to a process for the production of hard metal shaped elements with a defined binding metal phase gradient, whereby the hard metals consist of one or several hard material phases of the metals of the IV, V and/or VI subgroups of the periodic table of elements and one or several binding metal phases of Co, Ni and/or Fe or alloys of said elements with a binding metal phase component of total 2% to 30% by mass. The process is performed by means of conventional powder-metallurgy process steps, such as mixing and mixing/pulverization of components, granulation, pressing into parent substances, if required presintering and sintering. According to the invention, silicon and/or one or several silicon compounds are included and pylorized in the technological production process and thus the graded structure is produced in situ during sintering without a boundary becoming visible between the subvolumes and the nominal binding agent content and the raised binding agent content .