The microstructure, mechanical properties, and electron-emission propertiesof a newly developed heated cathode material Mo-CeO_2 with 4.0% (mass fraction) of CeO_2 wereinvestigated. It is shown that the Mo-CeO_2 catho...The microstructure, mechanical properties, and electron-emission propertiesof a newly developed heated cathode material Mo-CeO_2 with 4.0% (mass fraction) of CeO_2 wereinvestigated. It is shown that the Mo-CeO_2 cathode material possesses high tensile strength andgood room-temperature ductility. After carbonized, the Mo-CeO_2 cathode material has a higher zerofield emission current density and a lower work function compared with the W-ThO_2 cathode material.展开更多
基金This work was financially supported by the National Key Fundamental Research Program (973 Program) (No.G1998061316)
文摘The microstructure, mechanical properties, and electron-emission propertiesof a newly developed heated cathode material Mo-CeO_2 with 4.0% (mass fraction) of CeO_2 wereinvestigated. It is shown that the Mo-CeO_2 cathode material possesses high tensile strength andgood room-temperature ductility. After carbonized, the Mo-CeO_2 cathode material has a higher zerofield emission current density and a lower work function compared with the W-ThO_2 cathode material.
