Ag-Ni-metal oxide-based electrical contact material, method for producing the same, circuit breaker and electromagnetic contactor

摘要

PROBLEM TO BE SOLVED: To provide an Ag-Ni-based electrical contact material excellent in deposition resistance and arc consumption resistance.SOLUTION: There is provided an Ag-Ni-metal oxide-based electrical contact material containing 60 to 80 mass% of Ag, 10 to 30 mass% of Ni and as 0.1 to 1 mass% of LaOand 5 to 10 mass% of SnOor ZnO as metal oxide and having a structure where the metal oxide is dispersed in Ag.SELECTED DRAWING: Figure 3