Abstract
Fine-grained micro-potassium doped tungsten samples were sintered by spark-plasma-sintering (SPS) method using tungsten–potassium (W–K) mixed powder. The potassium content, microstructure, density and mechanical properties of the sintered samples were measured. It is found that both sintering temperature and pressure play important roles to obtain high-density and fine-grain sample. By one step sintering method, the relative density (95.6%) and Vickers hardness (350.8) of the sample are largely improved than those of the commercial W–K (91.74% and 291.9, respectively) at similar grain size. Through two-step sintering, its grain size becomes smaller and more homogenous than that of the commercial one while showing similar density. This study will provide a novel way to fabricate high-density/fine-grain plasma facing material W–K.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
