Dispenser cathode and method of manufacturing a dispenser cathode
US5518520A · kind A · utility
0Cited by
8References
15Claims
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Key dates
| Filing date | Mar 6, 1995 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | Mar 6, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2009/041
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Method of manufacturing a dispenser cathode, in which method tungsten and a scandium-containing material are mechanically alloyed and the product thus formed is pressed into a cathode body. The cathode body is further provided with a barium-containing component. In the mechanical alloying process the tungsten is highly deformed and the scandium-containing material is mixed with the tungsten so as to be very finely distributed therein, so that an improved dispensation of scandium and hence an improved recovery after ion bombardment of the final cathode is attained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.