| Outline of Final Research Achievements |
The objective of this research is development of potassium (K) doped tungsten (W) laminate, which shows low temperature ductility, by applying the laminated structure technology developed by Karlsruhe Institute of Technology, Germany, to the K-doped W developed by the previous KAKENHI grant research. By optimizing the fabrication conditions of K-doped W (reduction ratio in rolling process, etc.) and K-doped W laminate (material selection of the interlayer, thickness of each layer, temperature and time of solid state diffusion bonding, etc.), it is clarified that the tungsten material showing ductility caused by plastic deformation and pseudo ductility like a composite material even at low temperature can be obtained. Therefore, the objective of this research is considered to be basically achieved.
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