The effect of adding Nickel element on mechanical and wear Properties of SiCp-Cu Composites

Abstract EN

Reinforced composites are prepared from a Copper as a matrix with SiC powder in different percentage ( i.e 5-25 vol.%) .For each prepared reinforced composite with respect to SiC addition , they divided into two parts , one undergo to addition of Ni in fixed percentage (2 wt%) and the other part leave without addition.

After drying , mixing and milling process, disc samples were prepared .

these samples were heat treated at (900°C) using furnace at argon atmosphere.

Density, porosity, Vicker microhardness , compressive strength were performed.

Dry sliding wear tests of Cu–SiCp composites were carried out using pin on disc apparatus with a typical experimental plan of simultaneous variation of loads (5,10)N .

The results show that the density was decreased while porosity increased with SiC content , and this was less remarkable with nickel presence.

Vicker microhardness, compress strength were improved by the nickel wettability on the reinforcement.

Moreover decreasing in wear rate comparing with the absence one.

The nickel presence modifies the interface structural model and is effective in passing load between the matrix and the reinforcement, by lessening the extent of interfacial debonding.