| 摘要 |
PURPOSE:To improve electron radiation capabilities by containing 0.05-5wt% of extremely fine powders of at least one of nickel, iron, and cobalt in an electron radiating material containing an alkaline earth metal including at least barium. CONSTITUTION:Argon and mercury is sealed in a discharge tube 1 made of glass, electrodes 2a, 2b are arranged on both sides of the discharge tube 1, and the glass inside of the discharge tube 1 is coated with a phosphor 3. Tungsten coils are coated with an electron radiating material made by mixing 0.05-5wt% of extremely fine powders of at least one of nickel, iron, and cobalt to an electron radiating material containing an alkaline earth metal including at least barium to form the electrodes 2a, 2b. Thereby, the conductivity of the electron radiating material is increased and the adhesiveness to the electrode can be improved. As a result, a discharge lamp electrode excellent in electron radiation capabilities can be produced. |
