Ba(1-x)Sr(x)TiO3-Zn2TiO4 diphasic composite ceramic material preparation method thereof

Abstract

This invention relates to a dielectric adjustable and two-phase composite ceramic material. It is of two-phase composite micro-wave ceramic material, with its representation of: Ba(1-x)SrxTiO3-Zn2TiO4, the components are: Ba(1-x)SrxTiO3(x=0.3-0.6)80.0wt%-20.0wt%,Zn2TiO4 20.0wt%-80.0wt%. The system curie temperature can be regulated widely by the ratio of Ba / Sr. According working temperature requirements of the designed adjustable micro-wave device, we can regulate the system structure and properties of the material. This inventive product is suitable for design and development of adjustable micro-wave device and electrically adjustable medium functional module, and suitable for design and development of low-temperature co-sintered ceramic device and multiple-layered functional device.

Description

technical field

[0001] The invention relates to the technical field of a two-phase composite ceramic material whose dielectric constant is controllable with serialization of composite components and has highly adjustable characteristics under the action of an external DC electric field. Background technique

[0002] Composite ceramics with dielectric tunability and low-temperature sintering characteristics are key materials for tunable microwave components such as electrically tunable microwave resonators, filters, and microwave dielectric antennas. They have important application values ​​and can be widely used in mobile communications and satellite positioning. Systems (GPS), automotive electronics, radar, and military guidance systems are highly valued by researchers and industries. As a new type of functional electronic components, passive tunable microwave devices are urgently needed in the field of modern information industry. Using the electrical nonlinearity of ferro...

Examples

Embodiment 1～6

[0033] Preparation of Ba (1-x) Sr x TiO 3 -Zn 2 TiO 4 (x=0.50, 0.45, 0.40) two-phase composite microwave ceramic material:

[0034] According to Ba 0.5 Sr 0.5 TiO 3 、Ba 0.55 Sr 0.45 TiO 3 and Ba 0.6 Sr 0.4 TiO 3 The stoichiometric ratio, respectively weighed 46.6454gBaTiO 3 and 36.7034 g SrTiO 3 , 51.3099g BaTiO 3 and 33.0331 g SrTiO 3 , 55.9744g BaTiO 3 and 29.3627gSrTiO 3 Put the powder in a nylon ball mill jar, add zirconia balls and absolute ethanol, mill for 24 hours, and pre-calcine at 1100°C for 4 hours after the discharge is dried, and Ba 0.5 Sr 0.5 TiO 3 、Ba 0.55 Sr 0.45 TiO 3 and Ba 0.6 Sr 0.4 TiO 3 The powder is ready for use. In addition, weigh 32.560g ZnO and 15.980gTiO 2 Put the powder in a nylon ball mill jar, add zirconia balls and deionized water, mill for 24 hours, and pre-calcine at 1100°C for 4 hours after the discharge is dried. After grinding, Zn 2 TiO 4 The powder is ready for use.

[0035] Take by weighing the above-mentio...

Embodiment 1

[0042] Example 1 # -6 # Ba obtained from the formula (1-x) Sr x TiO 3 -Zn 2 TiO 4 (x=0.50,0.45,0.40) The X-ray diffraction analysis collection of composite microwave ceramic material is as attached figure 1 shown.

[0043] Example 1 # -6 # Ba obtained from the formula (1-x) Sr x TiO 3 -Zn 2 TiO 4 (x=0.50, 0.45, 0.40) The relationship curves of the dielectric constant and loss of the composite microwave ceramic material with temperature are as attached figure 2 shown.

[0044] Example 1 # -6 # Ba obtained from the formula (1-x) Sr x TiO 3 -Zn 2 TiO 4 (x=0.50, 0.45, 0.40) The relationship curve between the dielectric constant of the composite microwave ceramic material and the applied DC field strength is as attached image 3 As shown, among them, 1 # 20wt% Ba 0.5 Sr 0.5 TiO 3 with 80wt% Zn 2 TiO 4 Composite; 2 # 30wt% Ba 0.5 Sr 0.5 TiO 3 with 70wt% Zn 2 TiO 4 Composite; 3 # 40wt% Ba 0.55 Sr 0.45 TiO 3 Composite with 60wt%; 4 # 50wt% Ba 0...

technical field

[0001] The invention relates to the technical field of a two-phase composite ceramic material whose dielectric constant is controllable with serialization of composite components and has highly adjustable characteristics under the action of an external DC electric field. Background technique

[0002] Composite ceramics with dielectric tunability and low-temperature sintering characteristics are key materials for tunable microwave components such as electrically tunable microwave resonators, filters, and microwave dielectric antennas. They have important application values ​​and can be widely used in mobile communications and satellite positioning. Systems (GPS), automotive electronics, radar, and military guidance systems are highly valued by researchers and industries. As a new type of functional electronic components, passive tunable microwave devices are urgently needed in the field of modern information industry. Using the electrical nonlinearity of ferro...

Examples

Embodiment 1～6

[0033] Preparation of Ba (1-x) Sr x TiO 3 -Zn 2 TiO 4 (x=0.50, 0.45, 0.40) two-phase composite microwave ceramic material:

[0034] According to Ba 0.5 Sr 0.5 TiO 3 、Ba 0.55 Sr 0.45 TiO 3 and Ba 0.6 Sr 0.4 TiO 3 The stoichiometric ratio, respectively weighed 46.6454gBaTiO 3 and 36.7034 g SrTiO 3 , 51.3099g BaTiO 3 and 33.0331 g SrTiO 3 , 55.9744g BaTiO 3 and 29.3627gSrTiO 3 Put the powder in a nylon ball mill jar, add zirconia balls and absolute ethanol, mill for 24 hours, and pre-calcine at 1100°C for 4 hours after the discharge is dried, and Ba 0.5 Sr 0.5 TiO 3 、Ba 0.55 Sr 0.45 TiO 3 and Ba 0.6 Sr 0.4 TiO 3 The powder is ready for use. In addition, weigh 32.560g ZnO and 15.980gTiO 2 Put the powder in a nylon ball mill jar, add zirconia balls and deionized water, mill for 24 hours, and pre-calcine at 1100°C for 4 hours after the discharge is dried. After grinding, Zn 2 TiO 4 The powder is ready for use.

[0035] Take by weighing the above-mentio...

Embodiment 1

[0042] Example 1 # -6 # Ba obtained from the formula (1-x) Sr x TiO 3 -Zn 2 TiO 4 (x=0.50,0.45,0.40) The X-ray diffraction analysis collection of composite microwave ceramic material is as attached figure 1 shown.

[0043] Example 1 # -6 # Ba obtained from the formula (1-x) Sr x TiO 3 -Zn 2 TiO 4 (x=0.50, 0.45, 0.40) The relationship curves of the dielectric constant and loss of the composite microwave ceramic material with temperature are as attached figure 2 shown.

[0044] Example 1 # -6 # Ba obtained from the formula (1-x) Sr x TiO 3 -Zn 2 TiO 4 (x=0.50, 0.45, 0.40) The relationship curve between the dielectric constant of the composite microwave ceramic material and the applied DC field strength is as attached image 3 As shown, among them, 1 # 20wt% Ba 0.5 Sr 0.5 TiO 3 with 80wt% Zn 2 TiO 4 Composite; 2 # 30wt% Ba 0.5 Sr 0.5 TiO 3 with 70wt% Zn 2 TiO 4 Composite; 3 # 40wt% Ba 0.55 Sr 0.45 TiO 3 Composite with 60wt%; 4 # 50wt% Ba 0...

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