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The microstructure, mechanical properties, and electron-emission properties of a newly developed heated cathode material Mo-CeO_2 with 4.0% (mass fraction) of CeO_2 were investigated. It is shown that the Mo-CeO_2 cathode material possesses high tensile strength and good room-temperature ductility. After carbonized, the Mo-CeO_2 cathode material has a higher zero field emission current density and a lower work function compared with the W-ThO_2 cathode material.
The microstructure, mechanical properties, and electron-emission properties of a newly heated cathode material Mo-CeO 2 with 4.0% (mass fraction) of CeO 2 were investigated. It is shown that the Mo-CeO 2 cathode material possesses high tensile strength and good room -temperature ductility. After carbonized, the Mo-CeO 2 cathode material has a higher zero field emission current density and a lower work function compared with the W-ThO 2 cathode material.