The Research of the Morphology and Mechanical Characteristics of Electric Bimetallic Contacts

The paper demonstrates that as the energy industry develops, there is a continuous process of improving the designs of contact electrical connections. Bimetallic contacts are becoming more common. Their performance depends on the morphology and strength of the connection layers. Clad workpieces with various heat treatment modes were researched. The strength of the joint of the laminated compound was also determined. With increasing temperature and heat treatment time, the concentration as well as the amount of intermetallic compounds in the weld zone increases. When the layer of intermetallic compounds reaches a certain value, the effects of increasing temperature and increasing time are weakened. Observations show that a low annealing temperature with a short heat treatment time can significantly improve the strength of the clad compound joint.