Abstract
Fine particle peening (FPP) was conducted on commercial pure iron to concentrate carbon-black on the surface. Carbon-black/steel hybridized particles were developed and employed for FPP to transfer the carbon-black onto the FPP-treated surface. The results indicated that FPP using the hybridized particles successfully created a modified surface enriched with carbon-black, while bonding between the carbon-black and the substrate was weak. The amount of carbon-black on the surface was slightly decreased with increasing peening time. One reason for this was likely that work hardening of the substrate suppressed the transfer of carbon-black during the FPP process. The FPP-treated surface exhibited a low friction coefficient due to the presence of the carbon-black, suggesting that FPP using the hybridized particles may improve tribological properties.
