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The bronze alloyed powder composite containing nanoparticles was developed by hot pressing.The effects of the content and granularity of graphite on hardness,machinability,bending strength,compression strength,and friction and wear behavior of the composites were studied.The microstructures of the specimens were analyzed by SEM.The results showed that the graphites are distributed in net when nanographites are added,resulting in the decrease of mechanical properties and abrasive resistance.When the content of nanographite is 10%,the composite is brittle.The graphite is distributed in the form of block when micrographite is added,improving the mechanical properties and abrasive resistance.Wear track was studied by SEM.
The bronze alloyed powder developed by hot pressing. The effects of the content and granularity of graphite on hardness, machinability, bending strength, compression strength, and friction and wear behavior of the composites were studied. Microstructures of the specimens were analyzed by SEM.The results showed that the graphites are distributed in net when nanographites are added, resulting in the decrease of mechanical properties and abrasive resistance. When the content of nanographite is 10%, the composite is brittle. graphite is distributed in the form of block when micrographite is added, improving the mechanical properties and abrasive resistance. We track was studied by SEM.