| 简介 |
The invention relates to a cathode material for use in a high intensity discharge lamp, said material containing at least the following elements : a matrix based on tungsten having a tungsten content of more than or equal to 95 wt.%; tungsten carbide; oxides and or predominantly oxidic phases of one or more emitter elements from the group consisting of (rare earth metals, Hf Zr), wherein the cathode material contains predominantly carbide phases from one or more emitter elements from the group (rare earth metals, Hr, Zr). The invention relates to a high intensity discharge lamp which comprises a cathode made from the claimed cathode material and to a method for producing a cathode material. |
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