TUNGSTEN ALLOY PART, AND DISCHARGE LAMP, TRANSMITTING TUBE, AND MAGNETRON USING SAME

摘要

The purpose of the present invention is to obtain a tungsten alloy having emission characteristics that are the same as or better than those of a thorium-containing tungsten alloy without using thorium, which is a radioactive substance, and to provide a discharge lamp, transmitting tube, and a magnetron that use the tungsten alloy. According to the present invention, the tungsten alloy comprises a Zr component within a range of 0.1 wt% to 5 wt% inclusive in terms of ZrC.