Method for preparing high-strength high-toughness carbon/carbon composite material

Method for preparing high-strength high-toughness carbon/carbon composite material

  • CN 101,717,269 A
  • Filed: 11/18/2009
  • Published: 06/02/2010
  • Est. Priority Date: 11/18/2009
  • Status: Active Application
First Claim
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1. the preparation method of a high-strength high-toughness carbon/carbon composite material comprises the steps:

  • 1) the prefabricated carbon fiber body is placed chemical gas phase carburizing stove, precast body is handled without high temperature graphitization in advance;

    2) the chemical gas phase carburizing stove that vacuumizes, is rapidly heated, heating prefabricated carbon fiber body removes the rubberised layer of carbon fiber surface in the precast body, and control vacuum tightness is not more than 0.08kPa, heat-up rate is 30-32 ℃

    /min;

    3) with C 3H 6Be carbon source gas, N 2Be carrier gas, implement the chemical gas phase carburizing, control C 3H 6;

    N 2Volume ratio is 1;

    1~

    3, furnace temperature is that 900~

    1200 ℃

    , furnace pressure are 7~

    21kPa;

    4) behind the continuous chemical Gas Carburizing 80-100h, furnace cooling promptly gets high-strength high-toughness carbon/carbon composite material of the present invention, and matrix carbon is C 3H 6Decompose and be deposited on the RESEARCH OF PYROCARBON that obtains on the carbon fiber.

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