| 摘要 |
PROBLEM TO BE SOLVED: To provide a contact material for a vacuum valve combining excellent voltage resistance and cut-off properties, and to provide its production method. SOLUTION: Each material of contacts 13a, 13b fitted to a pair of electrodes 7, 8 respectively provided at one end of electrically conductive rods 5, 6 comprises 25 to 40 wt.% Cr, and the balance Cu, and Cr lies in a dendritical or equiaxed non-dispersed form. COPYRIGHT: (C)2008,JPO&INPIT
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