Metal Injection Moulding Of High Purity Tungsten And Molybdenum

Shaping high melting refractory metals like molybdenum and tungsten from powder has been proven a tough challenge because its refractoriness. A metal injection moulding (MIM) process has been developed for high purity molybdenum, tungsten and oxide dispersion strengthened tungsten (ODS). Employing MIM allows for obtaining small grain sizes, controlled doping and isotropic properties. Furthermore MIM is a net shape technique, avoiding difficult machining steps or joining processes, and reducing material waste In this presentation an overview of the manufacturing process will be given, as well as the results of microstructural and mechanical characterisation.