| 摘要 |
The new ceriated tungsten material is a non-radioactive, hardly consumable or non-consumable metallic electrode material, to be used especially in the inert gas shield arc welding, plasma welding, cutting, spray coating and smelting. It can also be used as electrodes in laser transmitting source or gas discharging light source. Moreover, the new material can be used to make a cathodic filament for film deposition by electronic beam under vacuum, etc. This invention employs the technique of powder metallurgy, by strictly controlling the process parameters to fabricate the ceriated-tungsten material, containing 1.0 - 4.5 %<*> ceric oxide (<*>ceric oxide = ceria). Thereby, the difficulties, that have existed for quite a long time of its processing brittleness in forging the ceriated tungsten material over 1.0 %, have now been overcome satisfactorily. |
