| 摘要 |
PROBLEM TO BE SOLVED: To provide a contact for vacuum valve minimal in contact erosion and having stable contact resistance characteristics and to provide a vacuum valve using it. SOLUTION: The contact for vacuum valve is constituted of a Cu-Cu<SB>2</SB>Te contact having a composition consisting of 0.001 to 10 wt.% of Cu<SB>2</SB>Te particles and the balance mainly Cu. Moreover, the Cu<SB>2</SB>Te particles, having a shape and a size in which the length of a side (a) is 2.5 to 500μm and the length of a side (b) nearly perpendicular to the side (a) is 10 to 1,000μm and, further, the proportion (b/a) between the length of the side (a) and the length of the other side (b) ranges from 2 to 400, comprise≥90% of the area of all the Cu<SB>2</SB>Te particles in a plane parallel to an electrically conducting plane. By this method, the contact for vacuum valve minimal in contact erosion and having stable contact resistance characteristics can be obtained. COPYRIGHT: (C)2006,JPO&NCIPI
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