Make the method for refrigerator starter material

Make the method for refrigerator starter material

  • CN 1,036,551 A
  • Filed: 01/31/1989
  • Published: 10/25/1989
  • Est. Priority Date: 01/31/1989
  • Status: Abandoned Application
First Claim
Patent Images

1. Make main crystal phase material a kind of comprising, adding mixes additive in main crystal phase material, pressure forming sinters ptc material (ceramics) into, and then nickel plating, made the method for PTC refrigerator starter by silver, silver ink firing, it is characterized in that:

  • the main crystal phase material that (a) makes is B Al-xPb xTiO 3(x=0.02~

    0.08), its sintering temperature are 1050 ℃



    1200 ℃

    , and sintering duration is 1.5~

    2.0 hours;

    (b) make main crystal phase material after, each thing weight percent of the mixing additive of adding is;

    SiO 2Be 2~

    42%, Nb 2O 5Be 8~

    25%, TiO 2Be 10~

    35%, Sb 2O 3Be 0~

    4%, Li 2CO 3Be 0~

    10%, M nCO 3Be 0~

    5%, Nd 2O 3Be 0~

    5%, Al 2O 3Be 0~

    20%, the pressure that compressing tablet is shaped is 0.75~

    1.5 to ram the loose soil with a stone-roller after sowing/cm 2, the ceramics sintering temperature is that 1300 ℃



    1350 ℃

    , sintering duration are 1 hour, cooling rate is 100~

    200 ℃

    /hour in 1350 ℃



    1000 ℃

    intervals, freely lowers the temperature with next for 1000 ℃

    ;

    (c) add an amount of NH during its bottom electrode chemical nickel plating 4OH, the top layer electrode adopts the agglomerating silver electrode.

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