Study on preparation of Fe-Cu composites material by co-precipitation-hydrogen reduction-powder metallurgy

Abstract

Fe-Cu composite materials have great potential to strengthen the copper matrix. However, the solid solution of Fe-Cu is disadvantageous to the electrical conductivity. In order to reduce the harm of solid solution, Fe-Cu composite materials that Fe particles as the second phase is produced by co-precipitation-hydrogen reduction-powder metallurgy. SEM and EDS show that the two-phase particles are uniformly dispersed. The maximum hardness of Fe-Cu composite materials is 100.95HV. When the Fe content in Fe-Cu composite materials is 12%, the hardness is 3 times higher than that of the matrix and reaches 91.85HV, and retaining 20% of the electrical conductivity.

Keywords:

• Fe-Cu
• composite material
• hydrogen reduction
• chemical co-precipitation
• powder metallurgy