• 专利标题:   Preparing copper rare earth graphene electrical contact material comprises e.g. mixing copper rare earth alloy powder and silicon powder to obtain mixed powder, carrying out chemical vapor deposition, separating silicon powder in mixed powder, sintering, extruding and drawing preform.
  • 专利号:   CN115704066-A
  • 发明人:   CAO H, MA Y
  • 专利权人:   ZHEJIANG CHINT ELECTRICS CO LTD, SHANGHAI SIMBATT ENERGY TECHNOLOGY CO
  • 国际专利分类:   B22F001/16, B22F003/14, C22C001/05, C22C009/00, C23C016/26, C23C016/44, H01H001/025, H01H001/027
  • 专利详细信息:   CN115704066-A 17 Feb 2023 C22C-009/00 202320 Chinese
  • 申请详细信息:   CN115704066-A CN10887085 03 Aug 2021
  • 优先权号:   CN10887085

▎ 摘  要

NOVELTY - Preparing copper rare earth graphene electrical contact material comprises (a) uniformly mixing copper rare earth alloy powder and silicon powder under atmosphere protection to obtain mixed powder, (b) placing the mixed powder in a vacuum chemical vapor deposition chamber, under protective gas and reducing atmosphere, keeping at 800-1050°C, introducing carbon source gas, and carrying out chemical vapor deposition to obtain a mixed powder of copper rare earth graphene and silicon powder, (c) separating the silicon powder in the mixed powder of the copper rare earth graphene and the silicon powder to obtain copper rare earth graphene powder, (d) sintering the copper rare earth graphene powder to obtain a preform, and (e) extruding and drawing the preform, processing into a final product. The rare earth of the copper rare earth alloy powder lanthanum, cerium, scandium, yttrium, samarium and dysprosium. The mixing atmosphere is argon or nitrogen. USE - Preparation method of copper rare earth graphene electrical contact material is used for low-power low-voltage switch, resistance welding motor, cable connector and electric locomotive overhead conductor. ADVANTAGE - The method provides copper rare earth graphene electric contact material with high corrosion resistance, high conductive heat and excellent mechanical performance.