Title :
Effect of Nanocrystalline Structure on Work Function of Tungsten
Author :
Bakhtizin, R.Z. ; Yumaguzin, Yu.M. ; Mulyukov, R.R.
Author_Institution :
Dept. of Phys. Electron., Bashkir State Univ., Ufa
Abstract :
The enhanced interest to nanocrystalline (NC) materials is attributed to their unusual physical properties significantly different from those of usual coarse-grained counterparts. A large volume fraction of grain boundaries within NC metals and their special, non-equilibrium states play a crucial role in formation of specific properties, particularly in appearance of some peculiarities in electronic structure. So, these materials are intriguing because they hold promise for technological manipulations. NC metals are expected to be applied for development of new effective cathodes. The NC structure with average grain size about 100 nm was processed in specimens of tungsten by severe plastic deformation. The microstructure was studied by ion and transmission electron microscopy
Keywords :
grain boundaries; grain size; ion microscopy; nanostructured materials; plastic deformation; transmission electron microscopy; tungsten; work function; W; electronic structure; grain boundaries; grain size; ion microscopy; nanocrystalline materials; nanocrystalline metals; nanocrystalline structure effect; plastic deformation; transmission electron microscopy; work function; Electron microscopy; Grain boundaries; Grain size; Magnetic force microscopy; Nanostructured materials; Nanostructures; Plastics; Spectroscopy; Transmission electron microscopy; Tungsten;
Conference_Titel :
Vacuum Electronics Conference, 2006 held Jointly with 2006 IEEE International Vacuum Electron Sources., IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
1-4244-0108-9
DOI :
10.1109/IVELEC.2006.1666255
