Process for producing tungsten carbides by carburizing in gaseous phase

摘要

The invention relates to a method for producing wolfram carbides by gas-phase carburetion of wolfram powders and/or suitable wolfram precursor compounds in powder form at temperatures above 850° C. According to the method a CO₂/CO mixture with a CO₂ content greater than the Boudouard equilibrium content corresponding to the carburetion temperature is used as carburetion gas phase.