▎ 摘　　要

NOVELTY - A copper-based contact material comprises graphene-enhanced copper foam including graphene and copper. The copper foam comprises oxide powder, carbide powder and balance amount of copper powder or copper alloy powder, and has interconnected pores having foam-like distribution. The oxide powder comprises tin oxide, cuprous oxide, zinc oxide or iron(II) oxide. The carbide powder includes tungsten carbide, silicon carbide, molybdenum carbide or boron carbide. The graphene is evenly distributed in an inner wall of copper foam covering pore surface and outer surface. USE - The copper-based contact material is useful in low-voltage circuit breaker, contactor and relay. ADVANTAGE - The copper-based contact material has low contact resistance, and improved arc resistance and anti-welding performance. DETAILED DESCRIPTION - A copper-based contact material comprises graphene-enhanced copper foam including graphene and copper. The copper foam comprises 0.01-10 wt.% oxide powder, 0.01-2 wt.% carbide powder and balance amount of copper powder or copper alloy powder, and has interconnected pores having foam-like distribution. The oxide powder comprises tin oxide, cuprous oxide, zinc oxide or iron(II) oxide. The carbide powder includes tungsten carbide, silicon carbide, molybdenum carbide or boron carbide. The graphene is evenly distributed in an inner wall of copper foam covering pore surface and outer surface. The thickness of copper foam is 10 nm.