• 专利标题:   Preparing graphene/nickel/copper-based contact material use in high voltage electric industry, comprises electroplating nickel transition layer on surface of copper substrate, and preparing graphene layer on surface of nickel transition layer.
  • 专利号:   CN115424878-A
  • 发明人:   LIU Y, YANG Q
  • 专利权人:   UNIV TSINGHUA
  • 国际专利分类:   H01H001/025, H01H011/04
  • 专利详细信息:   CN115424878-A 02 Dec 2022 H01H-001/025 202203 Chinese
  • 申请详细信息:   CN115424878-A CN11108752 13 Sep 2022
  • 优先权号:   CN11108752

▎ 摘  要

NOVELTY - Preparing graphene/nickel/copper-based contact material comprises electroplating a nickel transition layer on the surface of the copper substrate, preparing graphene layer on the surface of nickel transition layer, where the composition of the plating solution used for electroplating the nickel transition layer includes: 25-35 g/l mickel sulfate hexahydrate, 30-50 g/l sodium citrate, 20-35 g/l ammonium sulfate and 18-30 g/l sodium hypophosphite, adjusting the pH value to 7.5-8.5 with aqueous ammonia. USE - Graphene/nickel/copper-based contact material for use in high voltage electric industry. ADVANTAGE - The method provides graphene/nickel/copper-based contact material with high melting point, high thermal conductivity, high conductivity and chemical inertness, high-coefficient of friction, reliable corrosion resistance and wear resistance, and excellent anti-ablative ability and wearing resistance. The plating solution used in the method has no organic or inorganic harmful substance, and is environment-friendly. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: graphene/nickel/copper-based contact material prepared by the aboe-mentioned method; an electric contact.