| 摘要 |
PROBLEM TO BE SOLVED: To improve density and bondability of Ag-WC-based alloy to which a sintering additive is added.SOLUTION: There is provided a contact material for a vacuum valve used in a vacuum valve including a pair of points of contact 1 which can be contacted with and be separated from each other. The contacts 1 are connected to a first Ag-WC-based alloy layer 2 which becomes a contact surface and a first Ag-WC-based alloy layer 2, and is formed of a second Ag-WC-based alloy layer 3 adhered to an electrode 4. A sintering additive is added to each of the first Ag-WC-based alloy layer 2 and the second Ag-WC-based alloy layer 3, and an amount of the sintering additive added to the first Ag-WC-based alloy layer 2 is greater than that of the second Ag-WC-based alloy layer 3. |
