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Garnet type solid solution magnetic dielectric functional medium ceramic material and preparation method thereof

A garnet-type, dielectric ceramic technology is applied in fixed capacitor dielectrics, fixed capacitors, and components of fixed capacitors. The effect of excellent microwave dielectric properties, single phase, and high dielectric constant

Inactive Publication Date: 2018-08-21
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] An object of the present invention is to provide a garnet-type solid solution magnetic and dielectric functional dielectric ceramic material, which solves the problem that the existing magnetic and dielectric functional dielectric ceramic materials cannot have both low-frequency high dielectric constant and high magnetic permeability and small microwave loss

Method used

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  • Garnet type solid solution magnetic dielectric functional medium ceramic material and preparation method thereof
  • Garnet type solid solution magnetic dielectric functional medium ceramic material and preparation method thereof
  • Garnet type solid solution magnetic dielectric functional medium ceramic material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Prepare 0.5Y 3 Fe 5 o 12 -0.5Ca 3 LiMgV 3 o 12 Magnetodielectric functional dielectric ceramic material.

[0034] The analytically pure raw material Y 2 o 3 , Fe 2 o 3 , CaO, MgO, Li 2 CO 3 , V 2 o 5 , according to the formula 0.5Y 3 Fe 5 o 12 -0.5Ca 3 LiMgV 3 o 12 preparation. Mix the prepared chemical raw materials, then put them into a nylon tank, add anhydrous ethanol equal to the weight of the raw materials into the nylon tank, ball mill for 4 hours, fully mix and grind, take out after ball milling, and then quickly dry at 100-200°C Dry, pass through a 200-mesh sieve after drying, and then pre-press into a block; pre-burn the block to obtain a sample burnt block, the pre-burning condition is 1100 ° C for 4 hours; crush the sample burnt block and ball mill for 5-6 hours , fully mixed and ground, dried at 100-200°C after ball milling, added binder with 15% of the total mass of the powder after drying, the binder was 5% polyvinyl alcohol aqueous so...

Embodiment 2

[0039] Prepare 0.35Y 3 Fe 5 o 12 -0.65Ca 3 LiMgV 3 o 12 Magnetodielectric functional dielectric ceramic material.

[0040] The analytically pure raw material Y 2 o 3 , Fe 2 o 3 , CaO, MgO, Li 2 CO 3 , V 2 o 5 , according to the formula 0.35Y 3 Fe 5 o 12 -0.65Ca 3 LiMgV 3 o 12 preparation. Mix the prepared chemical raw materials, then put them into a nylon tank, add deionized water with 80% of the weight of the raw materials into the nylon tank, ball mill for 4 hours, fully mix and grind, take out after ball milling, and then quickly dry at 100-200°C Dry, pass through a 200-mesh sieve after drying, and then pre-press into a block; pre-burn the block to obtain a sample burnt block, the pre-burning condition is 800 ° C for 6 hours; crush the sample burnt block and ball mill for 5-6 hours , fully mixed and ground, dried at 100-200°C after ball milling, added binder with 15% of the total mass of the powder after drying, the binder was 5% polyvinyl alcohol aqueou...

Embodiment 3

[0043] Prepare 0.7Y 3 Fe 5 o 12 -0.3Ca 3 LiMgV 3 o 12 Magnetodielectric functional dielectric ceramic material.

[0044] The analytically pure raw material Y 2 o 3 , Fe 2 o 3 , CaO, MgO, Li 2 CO 3 , V 2 o 5 , according to the formula 0.7Y 3 Fe 5 o 12 -0.3Ca 3 LiMgV 3 o 12 preparation. Mix the prepared chemical raw materials, then put them into a nylon tank, add deionized water 120% of the weight of the raw materials into the nylon tank, ball mill for 4 hours, fully mix and grind, take out after ball milling, and then quickly Drying, passing through a 200-mesh sieve after drying, and then pre-pressing into a block; pre-calcining the block to obtain a sample burnt block, the pre-burning condition is 1000 ° C for 4 hours; crushing the sample burnt block and ball milling for 5-6 hours, fully mixed and ground, dried at 100-200°C after ball milling, added 12% binder of the total powder mass after drying, the binder was made of 5% polyvinyl alcohol aqueous solutio...

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Abstract

The invention discloses a garnet type solid solution magnetic dielectric functional medium ceramic material and a preparation method thereof. garnet type ferrite ceramic Y3Fe5O12 and garnet type microwave dielectric ceramic Ca3LiMgV3O12 are used as the raw materials, the raw material ratio of ferrite-microwave dielectric ceramic is adjusted to synthesize a solid solution at one time, and a seriesof magnetic dielectric functional medium ceramic materials with magnetic properties, excellent dielectric properties and microwave properties can be obtained, and the specific structural expression general formula is: xY3Fe5O12-(1-x)Ca3LiMgV3O12, wherein x is greater than or equal to 0.01 and smaller than or equal to 0.99. Moreover, the ceramic material provided by the invention has a sintering temperature of 1000-1450DEG C, and has the characteristics of simple chemical composition and preparation process, and single phase.

Description

technical field [0001] The invention belongs to the technical field of electronic ceramics, and in particular relates to a garnet type solid solution magnetic and dielectric functional dielectric ceramic material and a preparation method thereof. Background technique [0002] The rapid development of the information industry requires electronic equipment such as communication, radar, navigation, and electronic countermeasures to have the characteristics of multi-function, miniaturization, and high mobility. , flexible piezoelectric, etc., among which the magnetoelectric properties have attracted much attention. As we all know, the wavelength of the electromagnetic wave transmitted in the dielectric material is inversely proportional to the square root of the product of the dielectric constant and magnetic permeability of the medium, so the use of magnetoelectric composite materials with higher dielectric constant and higher magnetic permeability can be used in different In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622H01G4/12H01G4/30
CPCC04B35/2683C04B35/622C04B2235/3203C04B2235/3206C04B2235/3208C04B2235/3225C04B2235/3239C04B2235/3272C04B2235/602C04B2235/656C04B2235/6567H01G4/1209H01G4/30
Inventor 何立
Owner XIAN UNIV OF TECH
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