AgMe contact material for circuit breaker and preparation method thereof

The invention discloses an AgMe contact material for a circuit breaker and a preparation method thereof. The method comprises steps that 1, Ag powder, Me powder and additive powder are premixed to obtain AgMe mixed powder; 2, the obtained AgMe mixed powder is subjected to high and low speed alternate wet ball milling; 3, the powder after wet ball milling is subjected to wet glue mixing and granulation; 4, the granulated powder is subjected to molding and pressing to obtain an AgMe green body; 5, the AgMe green body is degummed and sintered to obtain an AgMe porous skeleton; and 6, the AgMe porous skeleton after degumming and sintering and the Ag are subjected to infiltration and sintering to obtain the AgMe electrical contact material. The method is advantaged in that hardness of the material is obviously higher than the AgMe electrical contact material prepared through a traditional method, breaking capability and electrical life of the contact material are improved, operation is simple, the yield is high, a