| 摘要 |
PURPOSE:To enable a matrix cathode which is a unified construction including a barrier layer to be massproduced without widely changing the conventional manufacturing process by alternately applying a metallic powder and an electron-discharging matter powder over a heat-resisting thin metallic plate to make a layered construction, then compressing it to stick the plate and powders together, being followed by working the thus formed body into a cathode-like shape. CONSTITUTION:A metallic powder layer 2 principally consisting of Ni is formed on a heat-resisting thin metallic plate 1 working as a barrier layer by either application or spraying carried out with a spray gun. Next, an electron-discharging matter layer 3 composed of an oxide of an alkaline earth metal is formed on the layer 2. Following that, formation of the layers 2 and 3 are repeated to make a multilayer construction 4 which is then compressed or rolled with a pressing machine or a rolling machine to stick the layers 1, 2 and 3 together. The thus formed construction 4 is worked into a cathode-like pellet 5, thereby manufacturing a matrix cathode. Here, the thin plate 1 may consist of either a simple substance chosen from among Ni, W, Mo, Ta and Re or a thin alloy plate. |
