High ceramic dielectric capacitor material with reduction resistance
A container material, high dielectric ceramic technology, applied in the field of capacitors, can solve the problems of difficult industrialization, high cost of raw materials, complex process, etc., and achieve the effect of good casting process, low sintering temperature and excellent comprehensive performance
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[0032] Example 1:
[0033] The invention provides a high dielectric ceramic capacitor material with reduction resistance, which is composed of a main material and a modifier; wherein the main material is tetragonal BaTiO 3 , Particle size D 50 =0.65μm, purity ≥99.8wt%.
[0034] Weigh the main material and modifier according to the weight ratio in Table 1 (in grams), use deionized water as the medium, ball mill and mix for 5 hours, dry at 120°C for 6 hours, take out the ceramic powder, grind and mix After passing through a 40-mesh sieve, use a ziplock bag for packaging and storage.
[0035] Table 1
[0036]
[0037]
[0038] Performance assessment of the prepared material: Weigh 3g powder material, add 6.5wt% PVA aqueous solution for granulation, press at 200MPa to form Ф=10mm discs, sinter in a reducing atmosphere, and cool down with the furnace. The sample surface is treated, and the electrode is coated and sintered. After making the wafer capacitor, test the capacitance, loss, ins...
Example Embodiment
[0044] Example 2:
[0045] The invention provides a high dielectric ceramic capacitor material with reduction resistance, which is composed of a main material and a modifier; wherein the main material is tetragonal BaTiO 3 , Particle size D 50 =0.75μm, purity ≥99.8wt%.
[0046] Table 4
[0047] Material composition Recipe 7 Recipe 8 Formulation 9 Formulation 10 Formula 11 Formulation 12 BaTiO 3
[0048] Weigh the main material and modifier according to the weight ratio in Table 4 (in grams), use deionized water as the medium, ball mill and mix for 5 hours, dry at 120°C for 6 hours, take out the ceramic powder, grind and combine After passing through a 40-mesh sieve, use a ziplock bag for packaging and storage.
[0049] Performance assessment of the prepared materials: Weigh 3g of ceramic powder, add 6.5wt% PVA aqueous solution to granulate, press at 200MPa to form Ф=10mm discs, sinter in a reducing atmosphere, and cool down with the furnace. The sample surface is treated, and the...
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