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Microstructure and properties of a Mo-CeO_2 heated cathode material

【摘要】:正 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.

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