Ta Zr C ternary ceramics and preparation method thereof

Ta Zr C ternary ceramics and preparation method thereof

  • CN 104,744,044 B
  • Filed: 03/20/2015
  • Issued: 04/13/2018
  • Est. Priority Date: 03/20/2015
  • Status: Active Grant
First Claim
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1. a kind of preparation method of Ta-Zr-C ternary ceramics, comprises the following steps:



  • 1)

    Prepare precursor solution:

    Added metal inorganic salt mixture as presoma in the first solvent, the metal inorganicSalt mixture is containing Ta5+Inorganic salts and containing Zr4+Inorganic salts, obtain the liquid solution of zirconium precursor containing tantalum;

    Carbon source presoma is addedIn second solvent, agitated dissolving, obtains carbon source precursor solution;



    2)

    Prepare colloidal sol:

    By step(

    1)

    Gained zirconium precursor containing tantalum liquid solution and the mixing of carbon source precursor solution, persistently stir shapeInto colloidal sol;



    3)

    Aging:

    By step(

    2)

    Gained colloidal sol carries out heat-insulation pressure keeping aging, and the holding temperature of the aging is 60 DEG C~250DEG C, the dwell pressure of the aging is 0.5 MPa~10MPa, and ageing time is 5h~72h, obtains wet gel;



    4)

    It is dry:

    Drying steps(

    3)

    Gained wet gel, obtains xerogel;



    5)

    High temperature sectional is calcined:

    By step(

    4)

    Gained xerogel carries out high temperature sectional calcining, with 2 DEG C/min~8 DEG C/min'"'"'sHeating rate is warming up to 600 DEG C~800 DEG C, keeps the temperature 1h~5h, then be warming up to the heating rate of 60 DEG C/min~200 DEG C/min1400 DEG C~1800 DEG C, 1h~5h is kept the temperature, last furnace cooling, obtains Ta-Zr-C ternary ceramics;

    The Ta-Zr-C ternarys potteryPorcelain is the continuous single phase solid solution ceramic powders of Ta-Zr-C.

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