Flow casting process based method for preparing substrate of circulator
A casting process and circulator technology, which is applied in the substrate preparation of YIG ferrite materials and in the field of electronic materials, can solve the problems of high microwave magnetic loss, low density, and high porosity of thick films, and achieve narrow ferromagnetic resonance line width, Excellent temperature stability and low dielectric loss
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Embodiment 1
[0026] 1) Main ingredient formula: Y 3-x Ca x sn x Fe 5-x o 12 , x=0.06;
[0027] 2) Primary ball milling: Using a planetary ball mill, using zirconium balls, milling for 4 to 8 hours under the condition of 241r / min;
[0028] 3. Pre-burning: Pre-burning at 1000°C~1200°C, keep warm for 1~3 hours;
[0029] 4. Doping: Add the following additives: 0.2wt% Bi 2 o 3 , 0.10wt% BaTiO 3 ;
[0030] 5. Secondary ball milling: use a planetary ball mill, add 40~50wt% organic binder and 40~50wt% absolute ethanol to the powder on the original basis, use zirconium balls, under the condition of 241r / min, ball mill 4~8 hours;
[0031] 6. Tape casting: the slurry obtained in the above steps is cast to obtain a raw film tape with a thickness of 100-120 μm;
[0032] 7. Lamination: According to the thickness requirement, the raw film belt lamination is 8~15 layers, and it is pressed and formed under 6MPa;
[0033] 8. Sintering: heat preservation at 1400°C for 4 hours in air atmosphere. ...
Embodiment 2
[0036] 1) Main ingredient formula: Y 3-x Ca x sn x Fe 5-x o 12 , x=0.09;
[0037] 2) Primary ball milling: Using a planetary ball mill, using zirconium balls, milling for 4 to 8 hours under the condition of 241r / min;
[0038] 3. Pre-burning: Pre-burning at 1000°C~1200°C, keep warm for 1~3 hours;
[0039] 4. Doping: Add the following additives: 0.2wt% Bi 2 o 3 , 0.10wt% BaTiO 3 ;
[0040] 5. Secondary ball milling: use a planetary ball mill, add 40~50wt% organic binder and 40~50wt% absolute ethanol to the powder on the original basis, use zirconium balls, under the condition of 241r / min, ball mill 4~8 hours;
[0041] 6. Tape casting: the slurry obtained in the above steps is cast to obtain a raw film tape with a thickness of 100-120 μm;
[0042] 7. Lamination: According to the thickness requirement, the raw film belt lamination is 8~15 layers, and it is pressed and formed under 6MPa;
[0043] 8. Sintering: heat preservation at 1400°C for 4 hours in air atmosphere. ...
Embodiment 3
[0045] 1. Main ingredient formula: Y 3-x Ca x sn x Fe 5-x o 12 , x=0.06;
[0046] 2. One-time ball milling: use a planetary ball mill, use zirconium balls, and mill for 4 to 8 hours under the condition of 241r / min;
[0047] 3. Pre-burning: pre-burning at 1000°C~1200°C, keep warm for 1~3 hours;
[0048] 4. Doping: Add the following additives: 0.2wt% Bi 2 o 3 , 0.10wt% BaTiO 3 ;
[0049] 5. Secondary ball milling: use a planetary ball mill, add 40~50wt% organic binder and 40~50wt% absolute ethanol to the powder on the original basis, use zirconium balls, under the condition of 241r / min, ball mill 4~8 hours;
[0050] 6. Tape casting: the slurry obtained in the above steps is cast to obtain a raw film tape with a thickness of 100-120 μm;
[0051] 7. Lamination: According to the thickness requirement, the raw film belt lamination is 8~15 layers, and it is pressed and formed under 6MPa;
[0052]8. Sintering: heat preservation at 1420°C for 4 hours in air atmosphere.
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