Preparation method for Bi-substituted LiZnTiMn gyromagnetic ferrite baseplate material

Preparation method for Bi-substituted LiZnTiMn gyromagnetic ferrite baseplate material

  • CN 105,884,342 A
  • Filed: 02/23/2016
  • Published: 08/24/2016
  • Est. Priority Date: 02/23/2016
  • Status: Active Application
First Claim
Patent Images

1. Bi is for a preparation method for LiZnTiMn gyromagnetic ferrite baseplate material, comprises the following steps:

  • Step 1;

    with Li2CO3

    ZnO、

    TiO2

    Mn3O4

    Fe2O3And Bi2O3For raw material, according toLi0.42Zn0.27Ti0.11Mn0.1Fe2.1-xBixO4The ratio weighing of molecular formula, preparation obtains initial powder, wherein,0<

    x<

    0.01;

    Step 2;

    initial powder wet ball grinding step 1 obtained, Ball-milling Time is 4~

    6h, the powder after dryingMaterial carries out pre-burning in sintering furnace, and calcined temperature is 840~

    860 DEG C, and burn-in time is 1~

    3h, then with stove certainlySo it is cooled to room temperature, obtains pre-burning powder;

    Step 3;

    pre-burning powder step 2 obtained carries out secondary ball milling, Ball-milling Time is 4~

    8h, and ball milling turnsSpeed is 200~

    250r/min;

    Slip after secondary ball milling takes out post-drying, adds the poly-second that concentration is 8~

    10wt%Enolate solution granulating and forming is also pressed into blank;

    Then the blank after compacting is put in sintering furnace,Sinter 2~

    3h at a temperature of 880~

    920 DEG C, cool to room temperature with the furnace and i.e. obtain described Bi for LiZnTiMn gyromagnetFerrite substrate material.

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