AKS doped tungsten––investigated by electrical resistivity I. Manufacturing tungsten bar and wire

Abstract The properties of the Al, K, Si doped (AKS) tungsten bars and wires are mostly controlled or investigated by studying mechanical and/or structural properties. The aim of the present work is to show, that electrical measurements can give also useful and often very specific information about their properties. In addition, by determining both “effective” and “bulk” resistivities, one can distinguish between the porosity and the lattice defects. The investigations survey the production from the powder state, when the metallic conduction just appears, through sintering, swaging and wire drawing, to the production of thin wires or even coils.