Tungsten Large-Scale Fiberform Nanostructures Retained under High Temperature Conditions

Abstract

Large-scale fiberform nanostructures (LFN) are formed on the tungsten (W) surface with He-W co-deposition environments. In this study, we conducted annealing experiments at 1473 - 1673 K for 30 min using an infrared heating furnace. It was found that the LFN retained their structures after annealing at 1673 K. Through detailed observations using an optical microscope, a scanning electron microscope (SEM), and a transmission electron microscope (TEM), the morphological changes are discussed in relation to the high-temperature stability.