3D network structure 1 3D-network structures 1 Arc erosion 1 Contact tests 1 Copper 1 Copper compounds 1 Copper matrix composite 1 Electrical contact material 1 Erosion 1 Erosion behavior 1 Fabrication 1 Heterogeneous structures 1 Hot pressing 1 In-situ fabrication 1 Mesoscopic scale 1 Metallic matrix composites 1 Particle reinforced composites 1 Particle size 1 Reinforcement 1 Three dimensional network structure 1 Titanium compounds 1 arc erosion 1 copper matrix composites 1 in-situ fabrication 1