Abstract: The contact material of CuCr25 alloy are manu- factured with spray forming technique using the optimized parameters. The microstructure of the alloy is observed, and the physical and mechanical properties are measured. It is indicated that after hot pressing the spray formed CuCr25 alloy consists of the refined equiaxed Cu matrix and the dispersed particles of the Cr-rich phase. The alloy has a higher relative density, a lower gas content, and therefore a higher electric conductivity.

Key words: Contact material Microstructure, CuCr25 alloy, Spray forming