Au-based clad composite material, producing method thereof and micromotor using the same

摘要

To provide a contact material suitable for a commutator of a micromotor which can improve wear resistance and prolong the life of the micromotor by improving an Au-based clad composite material provided at an outermost layer with Au or an Au alloy. The present invention provides the Au-based clad composite material including a surface of a contact substrate having an Ag-Cu-Si alloy layer cladded with Au or the Au alloy, wherein an intermetallic compound Cu-Si is dispersed and deposited in Au or the Au alloy.