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Electro-conductive ceramic for electronic components and preparation method thereof

A technology of conductive ceramics and electronic components, which is applied in the field of ceramics for electronic components, can solve the problems of poor crystallization performance of ceramic powder, achieve the effect of reducing transparency and improving low-temperature sintering performance

Inactive Publication Date: 2020-03-31
西安居正知识产权运营管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Generally, ceramic materials have excellent pyroelectricity and dielectric properties, and their excellent properties have been used as electronic devices such as ceramic capacitors and sensors. Existing ceramic materials are generally sintered by metal oxides, or obtained by liquid phase. The premise material is then sintered. The ceramic powder obtained by this method has relatively poor crystallization properties, so the difficulty of the homework now is to find a new method that is simple in preparation and does not affect the performance of ceramics, so that each ceramic material can be obtained. wider application

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0027] A method for preparing conductive ceramics for electronic components is implemented according to the following steps:

[0028] Step 1. Weigh 30-40% of ceramic powder, 20-25% of diatomaceous earth, 3-7% of calcium silicate, 5-10% of calcium carbonate, 10-15% of silicon dioxide and 3% of chromium oxide according to the mass percentage. ~5%, nickel boride 5~10%, barium titanate 10~15%, polyacrylamide 2~3%, metal powder 2~3%, the sum of the mass percentages of the above components is 100%.

[0029] Step 2. Mix the ceramic powder, diatomaceous earth, calcium silicate, calcium carbonate, silicon dioxide, nickel boride, barium titanate and metal powder weighed in step 1, and put them into a ball mill for ball milling twice. Oxygen and argon are introduced into the ball milling process. The first ball milling time is 1-2 hours. After the ball milling, polyacrylamide and colorant are added for the second ball milling. The second ball milling time is 10-15 hours. 150-200 mesh si...

Embodiment 1

[0037] A method for preparing conductive ceramics for electronic components is implemented according to the following steps:

[0038] Step 1. Weigh 30% of ceramic powder, 25% of diatomaceous earth, 7% of calcium silicate, 10% of calcium carbonate, 15% of silicon dioxide, 5% of chromium oxide, 10% of nickel boride, and titanic acid according to the mass percentage. 15% of barium, 3% of polyacrylamide, 3% of cobalt-manganese mixed powder, the sum of the mass percentages of the above components is 100%.

[0039] The mass ratio of cobalt and manganese in the cobalt-manganese mixed powder is 1:1.

[0040] Step 2. Mix the ceramic powder, diatomaceous earth, calcium silicate, calcium carbonate, silicon dioxide, nickel boride, barium titanate and cobalt-manganese mixed powders weighed in step 1, and put them into a ball mill for ball milling twice , during the ball milling process, oxygen and argon gas are introduced, the first ball milling time is 1h, after the ball milling, polyacr...

Embodiment 2

[0047]A method for preparing conductive ceramics for electronic components is implemented according to the following steps:

[0048] Step 1. Weigh 35% of ceramic powder, 20% of diatomite, 3% of calcium silicate, 6% of calcium carbonate, 11% of silicon dioxide, 4% of chromium oxide, 7% of nickel boride, and titanic acid according to the mass percentage. 10% of barium, 2% of polyacrylamide, 2% of cobalt-aluminum mixed powder, the sum of the mass percentages of the above components is 100%.

[0049] The mass of cobalt and aluminum in the cobalt-aluminum mixed powder is 1:1.

[0050] Step 2. Mix the ceramic powder, diatomaceous earth, calcium silicate, calcium carbonate, silicon dioxide, nickel boride, barium titanate and cobalt-aluminum mixed powders weighed in step 1, and put them into a ball mill for ball milling twice , feed oxygen and argon during the ball milling process, the first ball milling time is 1.5h, after the ball milling, add polyacrylamide and zinc oxide for the ...

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Abstract

The invention discloses electro-conductive ceramic for electronic components, which is composed of, by mass, 30-40% of ceramic powder, 20-25% of diatomite, 3-7% of CaSiO3, 5-10% of CaCO3, 10-15% of SiO2, 3-5% of chromic oxide, 5-10% of nickel borate, 10-15% of barium titanate, 2-3% of polyacrylamide, and 2-3% of metal powder, all the components adding to 100% by mass. The invention also disclosesa preparation method of the electro-conductive ceramic, including: ball-milling the raw materials for two times, performing oxidization during the ball milling with oxygen and argon; and after oxidization, performing ultrasonic treatment and sintering, and finally press-shaping the electro-conductive ceramic. The electro-conductive ceramic is mainly prepared from ceramic powder and diatomite, which are abundant in source and low in cost, so that the product is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of ceramics for electronic components, in particular relates to a conductive ceramic for electronic components, and also relates to a preparation method of the ceramics. Background technique [0002] Electronic components are the basis of electronic products. They are often composed of several parts and can be used in similar products; they often refer to certain parts in industries such as electrical appliances, radios, and instruments, such as capacitors, transistors, hairsprings, and springs. the general term for. [0003] Electronic components include: resistors, capacitors, potentiometers, electron tubes, radiators, electromechanical components, connectors, semiconductor discrete devices, electroacoustic devices, laser devices, electronic display devices, optoelectronic devices, sensors, power supplies, switches, micro-motors, Electronic transformers, relays, printed circuit boards, integrated circuits, various ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/00C04B35/634C04B35/626
CPCC04B35/00C04B35/6261C04B35/63444C04B2235/3208C04B2235/3236C04B2235/3241C04B2235/3418C04B2235/3804C04B2235/40C04B2235/402C04B2235/405
Inventor 戴维一
Owner 西安居正知识产权运营管理有限公司
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