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High-dielectric-constant ceramic dielectric material and preparation method thereof

A high dielectric constant, ceramic dielectric technology, applied in the field of ceramic dielectric materials, can solve the problems of low dielectric constant, high sintering temperature and high loss, and achieve the effect of high dielectric constant, low dielectric loss and stable temperature coefficient

Pending Publication Date: 2021-06-22
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these ceramic materials have problems such as high sintering temperature, low dielectric constant and high loss.

Method used

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  • High-dielectric-constant ceramic dielectric material and preparation method thereof
  • High-dielectric-constant ceramic dielectric material and preparation method thereof
  • High-dielectric-constant ceramic dielectric material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A high dielectric constant ceramic dielectric material, made of 10% BaSiO by mass percentage 3 Glass-ceramic and 90% BaO-5.75Fe 2 o 3 -0.5NiO composition.

[0028] The method for preparing described high dielectric constant ceramic dielectric material, the steps are as follows: raw material Ba(NO 3 ) 2 , Fe(NO 3 ) 3 and Ni(NO 3 ) 2 According to the chemical formula BaO-5.75Fe 2 o 3 -0.5NiO, batched, ball milled on a ball mill with a speed of 400r / min for 6 hours, dried in a 3.3kw ordinary oven at 100°C for 4 hours, and passed through 250 holes / cm 2 Sieve the sample, raise the temperature to 800°C at 5°C / min, and keep the temperature at 800°C for 3 hours to obtain frit A.

[0029] Raw material BaCO 3 and SiO 2 According to the chemical formula BaSiO 3 , for batching, ball milling on a ball mill with a speed of 400r / min for 6 hours, drying in a 3.3kw ordinary oven at 100°C for 4 hours, passing through 250 holes / cm 2 Sampling sieve, heat up to 1400°C, keep wa...

Embodiment 2

[0032] A high dielectric constant ceramic dielectric material, composed of 15% BaSiO by mass percent 3 Glass-ceramic and 85% BaO-5.75Fe 2 o 3 -0.5NiO composition.

[0033] The method for preparing described high dielectric constant ceramic dielectric material, the steps are as follows: raw material Ba(NO 3 ) 2 , Fe(NO 3 ) 3 and Ni(NO 3 ) 2 According to the chemical formula BaO-5.75Fe 2 o 3 -0.5NiO, batching, ball milling on a ball mill with a speed of 400r / min for 5 hours, drying in a 3.3kw ordinary oven at 100°C for 5 hours, passing through 200 holes / cm 2 Sieve the sample, raise the temperature to 800°C at 7°C / min, and keep it at 800°C for 2 hours to obtain frit A.

[0034] Raw material BaCO 3 and SiO2 According to the chemical formula BaSiO 3 , for batching, ball milling on a ball mill with a speed of 400r / min for 6 hours, drying in a 3.3kw ordinary oven at 100°C for 4 hours, passing through 250 holes / cm 2 Sampling sieve, heat up to 1400°C, keep warm for 2 hours...

Embodiment 3

[0037] A high dielectric constant ceramic dielectric material, composed of 20% BaSiO by mass percentage 3 Glass-ceramic and 80% BaO-5.75Fe 2 o 3 -0.5NiO composition.

[0038] The method for preparing described high dielectric constant ceramic dielectric material, the steps are as follows: raw material Ba(NO 3 ) 2 , Fe(NO 3 ) 3 and Ni(NO 3 ) 2 According to the chemical formula BaO-5.75Fe 2 o 3 -0.5NiO, batching, ball milling on a ball mill with a speed of 400r / min for 4 hours, drying in a 3.3kw ordinary oven at 100°C for 5 hours, passing through 120 holes / cm 2 Sieve the sample, raise the temperature to 800°C at 10°C / min, and keep it at 800°C for 4 hours to obtain frit A.

[0039] Raw material BaCO 3 and SiO 2 According to the chemical formula BaSiO 3 , for batching, ball milling on a ball mill with a rotational speed of 400r / min for 6 hours, drying in a 3.3kw ordinary oven at 100°C for 4 hours, passing through 200 holes / cm 2 Sampling sieve, heat up to 1400°C, keep...

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Abstract

The invention discloses a high-dielectric-constant ceramic dielectric material and a preparation method thereof, and belongs to the technical field of ceramic dielectric materials. The material is prepared from the following components in percentage by mass: 80-90 percent of BaO-5.75Fe2O3-0.5NiO and 10-20 percent of BaSiO3 microcrystalline glass. The preparation method comprises the following steps: carrying out ball milling, heating and mixing on raw materials to prepare a blank, gradually heating to 1100-1150 DEG C according to a certain heating rate, carrying out heat preservation for 0.5-2 hours, and cooling to obtain the ceramic dielectric material. The problem that the capacitance temperature coefficient of an existing ceramic dielectric material is large in change amplitude within the range of -55 DEG C to 150 DEG C is solved. The material has the characteristics of high dielectric constant, low dielectric loss and stable temperature coefficient.

Description

technical field [0001] The invention belongs to the technical field of ceramic dielectric materials, and relates to a high dielectric constant ceramic dielectric material and a preparation method thereof. Background technique [0002] Now the development of science and economy is unprecedented. With the rapid changes of science and technology, modern materials are developing in the direction of functional materials and nano materials. Among them, functional materials are a kind of materials that collect electricity, light, heat, sound and many other properties to display their functions and effects. They are inseparable from the development of modern science and technology. fields are irreplaceable. [0003] In recent years, with the rapid development of electronic science and technology, people's living habits have undergone earth-shaking changes. The popularity of smart phones and 4G communication technology has greatly shortened the distance between people; the research...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/622C04B35/626C04B35/64C03C10/04
CPCC04B35/2633C04B35/622C04B35/62665C04B35/64C03C10/00C04B2235/36C04B2235/3215C04B2235/3279C04B2235/6562C04B2235/6567C04B2235/96
Inventor 张永刚
Owner TAIYUAN UNIV OF TECH
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