Wear mechanisms 60NiTi 1 Carbon nanotube 1 Carbon nanotubes 1 Carbon nanotubes (CNTs) 1 Copper compounds 1 Copper matrix composite 1 Copper matrix composites 1 Electrical wear 1 Electrified railways 1 Friction 1 High voltage switches 1 Hybrid composites 1 Lubricated conditions 1 Metallic matrix composites 1 Particle reinforced composites 1 Porous structures 1 Powder metallurgy 1 Reinforced plastics 1 Reinforcement 1 Sliding applications 1 TiB2/Cu 1 TiB2/cu 1 Titanium compounds 1 Titanium diboride 1 Tribology 1 Wear mechanism 1 Wear of materials 1 Wear performance 1 Wear resistance 1