• carbon fiber knitted fabric reinforced copper composite for sliding contact material

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 481
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a novel carbon fiber knitted fabric reinforced copper (c/c–cu) composite was fabricated by a pressureless infiltration technique. the microstructure of the composite was characterized by scanning electron microscopy, x-ray diffraction and energy dispersive spectroscopy. the mechanical, electrical and tribological properties of the c/c–cu composite were compared with those of a carbon/copper contact strip. the experimental results showed that the c/c–cu composite formed an interpenetrating network structure. it exhibited a high bending strength of 186 mpa, excellent impact strength of 4.7 j/cm2and a particularly low electrical resistivity of 0.58 μω m, giving it advantages over the c/cu strip in terms of both mechanical and electrical properties. friction and wear experiments were conducted for the c/c–cu composite and the c/cu strip on a hemisphere pin-on-block apparatus, using cooper pins against polished specimens in dry sliding conditions. it was found that the c/c–cu composite exhibited greater wear resistance than the c/cu strip and did less damage to the copper pin.

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