• 专利标题:   Preparation of low temperature high efficiency graphene-reinforced copper base composite used as brazing filler involves enhanced chemical vapor deposition in a vacuum.
  • 专利号:   CN103817466-A, CN103817466-B
  • 发明人:   CAO J, ZHANG L, ZHANG T, QI J, FENG J
  • 专利权人:   HARBIN INST TECHNOLOGY
  • 国际专利分类:   B23K035/40
  • 专利详细信息:   CN103817466-A 28 May 2014 B23K-035/40 201449 Pages: 10 Chinese
  • 申请详细信息:   CN103817466-A CN10066482 26 Feb 2014
  • 优先权号:   CN10066482

▎ 摘  要

NOVELTY - Preparation of low temperature high efficiency graphene-reinforced copper base composite involves enhanced chemical vapor deposition in a vacuum device at 800-1000 Pa, modifying at 13.56 MHz deposition system power supply frequency at 190-210 W and 500-700 degrees C, lowering deposition settings at 10-300 seconds, adjusting hydrogen and argon temperature to 500-700 degrees C, cooling to room temperature and grinding the composite powder in a ball mill. USE - Preparation of low temperature high efficiency graphene-reinforced copper base composite used as brazing filler. DETAILED DESCRIPTION - Preparation of low temperature high efficiency graphene-reinforced copper base composite involves placing copper in the plasma-enhanced chemical vapor deposition vacuum device, pumping vacuum pressure to 5 Pa, introducing hydrogen at a flow rate of 15-22 standard cubic centimeter (SCCM), adjusting pressure in plasma-enhanced chemical vapor deposition vacuum device at 190-210 Pa, increasing to 500-700 degrees C, maintaining for 25-35 minutes, pumping plasma into the enhanced chemical vapor deposition vacuum device at 800-1000 Pa, modifying at 13.56 MHz deposition system power supply frequency at 190-210 W and 500-700 degrees C, lowering deposition settings at 10-300 seconds, closing the radio-frequency power source and heating power supply, cutting off carbon source gas, reducing hydrogen and argon gas flow at 40 and 80 SCCM respectively, adjust pumping speed and the deposition pressure to 150-200 Pa, adjusting hydrogen and argon temperature to 500-700 degrees C, cooling to room temperature and grinding the composite powder in a ball mill.