Giant dielectric constant strontium titanate dielectric ceramic and preparation method thereof
A technology of giant dielectric constant and dielectric ceramics, which is applied in the field of strontium titanate dielectric ceramics and its preparation, can solve the problems of increased dielectric loss and dielectric constant, and achieve improved dielectric properties, increased dielectric constant, high Effect of Insulation Resistivity
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Embodiment 1
[0029] 1. SrCO 3 、Eu 2 o 3 、TiO 2 Stoichiometric formula Sr 1 -xEu x TiO 3 (x=0.01) batching; put about 15g of powder into the ball mill tank, add 250ml of deionized water and 150g of zirconium balls, and ball mill on a planetary ball mill for 12 hours at a speed of 400 rpm;
[0030] 2. Put the ball-milled powder in an infrared oven, dry it at 80-120°C and pass it through a 40-mesh sieve for 2-3 times;
[0031] 3. Put the dried and sieved powder into a medium-temperature furnace, pre-fire at 1000°C, and keep it warm for 3 hours;
[0032] 4. Put 10g of powder calcined in step 3 into a ball mill tank, add 250ml of deionized water and 150g of zirconium balls, ball mill on a planetary ball mill for 12 hours, then dry, and pass through a 40-mesh sieve for 2 to 3 times;
[0033] 5. Add 7wt% paraffin wax powder to the dried and sieved powder in step 4 as a binder for granulation, pass through an 80-mesh sieve, and then use a powder tablet press to press into a green body with ...
Embodiment 2
[0038] Prepare Sr according to the preparation method of Example 1 1-x Eu x TiO 3 Dielectric ceramics, the only difference is that the sintering atmosphere in step 7 is N 2 with H 2 The flow ratio is 45:5, and the remaining steps are the same as the implementation case 1.
Embodiment 3
[0040] Prepare Sr according to the preparation method of Example 1 1-x Eu x TiO 3 Dielectric ceramics, the only difference is that the sintering temperature in step 7 is 1380°C.
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