A high-dielectric tunable barium strontium titanate-based composite aluminosilicate ceramic dielectric material
A technology for compounding aluminosilicate and barium strontium titanate, which is applied in the field of electronic materials and devices
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Embodiment 1
[0016] (1) According to 70%Ba 0.6 Sr 0.4 TiO 3 +30%Sr 2 al 2 SiO 7 The stoichiometric ratios of Ba, Sr, Ti, Si and Al were weighed in BaCO 3 11.680g, SrCO 3 13.083g, TiO 2 7.871g 、Al 2 o 3 2.488g and SiO 2 1.484g, put the prepared raw materials in a nylon ball mill tank, add zirconia balls and ball milling media, and then ball mill. After drying, the mixed powder is obtained by pre-calcining and grinding at 1000°C, 1300°C, and 4 hours respectively. ;
[0017] (2) Add the mixed powder described in (1) into zirconia balls and absolute ethanol or deionized water for 20 hours of ball milling, and then sieve the mixed powder 2 after discharging and drying;
[0018] (3) Uniformly mix and granulate the mixed powder 2 described in (2) plus an 8% polyvinyl alcohol aqueous solution by weight, and then press under a pressure of 10MPa to form a ceramic green sheet;
[0019] (4) The ceramic green sheet described in (3) is degummed at a temperature of 550°C for 4 hours, and then...
Embodiment 2
[0023] (1) According to 50% Ba 0.5 Sr 0.5 TiO 3 +50% (Sr 0.92 Ba 0.08 ) 2 Al 2 SiO 7 The stoichiometric ratios of Ba, Sr, Ti, Si and Al were weighed in BaCO 3 8.376g, SrCO 3 16.278g, TiO 2 5.756g 、Al 2 o 3 4.058g and SiO 2 2.391g, put the prepared raw materials in a nylon ball mill tank, add zirconia balls and ball milling media, and then ball mill. After drying, the mixed powder is obtained by pre-calcining and grinding at 1100°C, 1250°C, and 4 hours respectively. ;
[0024] (2) Add the mixed powder described in (1) into zirconia balls and absolute ethanol or deionized water for 21 hours of ball milling, and then sieve the mixed powder 2 after discharging and drying;
[0025] (3) Uniformly mix and granulate the mixed powder 2 described in (2) plus 8.5% polyvinyl alcohol aqueous solution by weight, and then press it under a pressure of 30MPa to form a ceramic green sheet;
[0026] (4) The ceramic green sheet described in (3) was degummed at a temperature of 560°C...
Embodiment 3
[0030] (1) According to 90%Ba 0.6 Sr 0.4 TiO 3 +10%Sr 2 Al 2 SiO 7 The stoichiometric ratios of Ba, Sr, Ti, Si and Al were weighed in BaCO 3 15.017g, SrCO 3 9.972g, TiO 2 10.120g 、Al 2 o 3 0.829g and SiO 2 0.495g, put the prepared raw materials in a nylon ball mill tank, add zirconia balls and ball milling media, and then ball mill. After drying, the mixed powder is obtained by pre-calcining and grinding at 1000°C, 1300°C, and 2 hours respectively. ;
[0031] (2) Add the mixed powder described in (1) into zirconia balls and absolute ethanol or deionized water for 22 hours of ball milling, and then sieve the mixed powder 2 after discharging and drying;
[0032] (3) Uniformly mix and granulate the mixed powder 2 described in (2) plus a 9% polyvinyl alcohol aqueous solution by weight, and then press it under a pressure of 50 MPa to form a ceramic green sheet;
[0033] (4) The ceramic green sheet described in (3) was degummed at a temperature of 580°C for 8 hours, and ...
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