Metallic matrix composites 3 Powder metallurgy 3 Wear of materials Powder metals 2 Reinforcement 2 Sintering 2 Wear-rate 2 316L 1 Austenitic stainless steel 1 Bearings material 1 Bending strength 1 Bronze bearings 1 Carbon nanotube 1 Carbon nanotubes 1 Carbon nanotubes (CNTs) 1 Copper compounds 1 Copper matrix composite 1 Copper matrix composites 1 Corrosion rate 1 Corrosive effects 1 Cu–Sn–Zn/Gr alloy 1 Cu–sn–zn/graphite alloy 1 Density (specific gravity) 1 Electrical wear 1 Electrified railways 1 Extreme conditions 1 Friction 1 Graphite 1 Hardness 1 High voltage switches 1