Temperature-stable X8R MLCC (multiplayer ceramic chip capacitor) medium material with low-temperature sintering effect
A dielectric material and low-temperature sintering technology, applied in the direction of fixed capacitor dielectrics, fixed capacitors, fixed capacitor parts, etc., can solve the problems of increased production costs, achieve good formability, good practical value and market prospects, and low loss Effect
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Embodiment 1
[0029] A temperature-stabilized X8R type MLCC dielectric material for low-temperature sintering is composed of main materials, auxiliary materials, modifiers and sintering aids. Among them, the main material BaTiO 3 Granularity D 50=0.60 μm, purity ≥99.8%.
[0030] Weigh analytically pure Bi according to the molar ratio of 1.01:1.01:4 2 o 3 、Na 2 CO 3 and TiO 2 , and using absolute ethanol as the medium, ball milled for 10 hours, dried at 80°C, ground and passed through a 120-mesh sieve, and calcined at 850°C for 2.5 hours to obtain Na 0.5 Bi 0.5 TiO 3 The powder is packaged and stored in a ziplock bag for later use.
[0031] Weigh analytically pure CaCO according to the molar ratio of 1:1 3 and TiO 2 , and using deionized water as the medium, ball milled for 8 hours, dried at 120°C, ground and passed through a 80-mesh sieve, and calcined at 1060°C for 3 hours to obtain CaTiO 3 The powder is packaged and stored in a ziplock bag for later use.
[0032] According to...
Embodiment 2
[0040] A temperature-stabilized X8R type MLCC dielectric material for low-temperature sintering is composed of main materials, auxiliary materials, modifiers and sintering aids. Among them, the main material BaTiO 3 Granularity D 50 =1.10m, purity ≥99.8%.
[0041] Weigh analytically pure Bi according to the molar ratio of 1.01:1.01:4 2 o 3 、Na 2 CO 3 and TiO 2 , and using absolute ethanol as the medium, ball milled for 10 hours, dried at 80°C, ground and passed through a 120-mesh sieve, and calcined at 850°C for 2.5 hours to obtain Na 0.5 Bi 0.5 TiO 3 The powder is packaged and stored in a ziplock bag for later use.
[0042] Weigh analytically pure CaCO according to the molar ratio of 1:1 3 and TiO 2 , and using deionized water as the medium, ball milled for 8 hours, dried at 120°C, ground and passed through a 80-mesh sieve, and calcined at 1060°C for 3 hours to obtain CaTiO 3 The powder is packaged and stored in a ziplock bag for later use.
[0043] According to ...
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