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Preparation method of yellow conductive zirconia ceramic

A technology of zirconia ceramics and zirconia powder, which is applied in the field of preparation of yellow conductive zirconia ceramics, can solve problems such as incompatibility of structure and function, poor adjustability of resistivity, unsatisfactory mechanical properties, etc., and achieve huge market practical value , adjustable resistivity, and facilitate large-scale automated production

Pending Publication Date: 2020-10-30
山东东大新材料研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The preparation method of the yellow zirconia ceramics in the prior art, the structure and function of the yellow zirconia ceramics cannot be combined, the resistivity is poorly adjustable, the chemical stability is low, and the mechanical properties are not ideal

Method used

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  • Preparation method of yellow conductive zirconia ceramic
  • Preparation method of yellow conductive zirconia ceramic
  • Preparation method of yellow conductive zirconia ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method of yellow conductive zirconia ceramics, the steps are as follows:

[0040] (1) Mix zirconia powder, titanium carbide powder, Ti powder, graphene, and hafnium oxide in a mass ratio of 60:32:15:5:3 to obtain a mixture;

[0041] The zirconia powder: the zirconia content is 95%, the average particle size is 0.5nm, and contains stabilizer Y 2 o 3 , the content is 5%;

[0042] The mixture is mixed with binder and deionized water to form a slurry, and ball milled in a ball mill tank for 12 hours.

[0043] Described binding agent: be PVA, mass percentage concentration is 5.0%, and binding agent consumption is 6% of mixture quality;

[0044] The consumption of described water is 120% of mixture quality.

[0045] (2) Dry the ball-milled slurry at 80° C., sieve and granulate through a swing granulator; obtain granulated powder; and sieve: the sieve mesh is 80 mesh.

[0046](3) Put the granulated powder into the mold, and mold it with a press at a pressure...

Embodiment 2

[0051] A preparation method of yellow conductive zirconia ceramics, the steps are as follows:

[0052] (1) Mix zirconia powder, titanium nitride powder, titanium oxide powder, phenolic resin, and alumina in a mass ratio of 35:55:25:15:5 to obtain a mixture;

[0053] The zirconia powder: the zirconia content is 90%, the average particle size is 1 μm, and the stabilizer CeO is contained 2 , the content is 10%;

[0054] The mixture is mixed with binder and water to form a slurry, and ground for 3 hours in a sand mill.

[0055] Described binding agent: be PVB, mass percent concentration is 5.0%, binding agent consumption is 10% of mixture quality;

[0056] The consumption of described water is 150% of mixture quality.

[0057] (2) Spray granulate the ball-milled slurry, and sieve to obtain granulated powder with a particle size of 60-100 mesh.

[0058] (3) Put the granulated powder into a mold, and mold it with a press at a pressure of 250 MPa to obtain a green body.

[0059]...

Embodiment 3

[0063] A preparation method of yellow conductive zirconia ceramics, the steps are as follows:

[0064] (1) Mix zirconia powder, titanium carbonitride powder, butyl titanate, carbon black, and lanthanum oxide in a mass ratio of 70:25:30:10:2 to obtain a mixture;

[0065] The zirconia powder: the zirconia content is 98%, the average particle size is 5 μm, and the stabilizer MgO is contained, and the content is 2%;

[0066] The mixture is mixed with binder and absolute ethanol to form a slurry, and ball milled in a ball mill tank for 3 hours.

[0067] Described binding agent: be phenolic resin, mass percent concentration is 10.0%; The amount of binding agent is 15% of mixture quality;

[0068] Described dehydrated alcohol consumption is 200% of compound quality.

[0069] (2) Spray granulation of the ball-milled slurry;

[0070] (3) Put the granulated powder into the mold, and mold it with a press at a pressure of 200MPa to obtain a green body;

[0071] (4) Put the pressed cer...

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Abstract

The invention discloses a preparation method of a yellow conductive zirconia ceramic. The preparation method comprises the following steps: mixing zirconium oxide powder, conductive powder, a titaniumsource, a carbon source and an additive to obtain a mixture, mixing the mixture with a binding agent and a liquid medium to form slurry, and carrying out ball milling in a ball milling tank or grinding in a sand mill, wherein the mass ratio of the zirconium oxide powder to the conductive powder to the titanium source to the carbon source to the additive is (25-75): (0-60): (5-30): (5-20): (0-5).The color of the zirconia ceramic is soil porcupine, rose gold, khaki color or gradient color, and the resistivity is 0.3 [mu]Omega.m to 10 [mu]Omega.m. The preparation method disclosed by the invention is simple in process and convenient for batch production, and the composite conductive ceramic material has the advantages that the composite conductive ceramic material is a high-performance functional composite conductive ceramic material integrating electric conductivity, various yellow colors, metal electrical properties and ceramic structure properties, and is excellent in electric conductivity and adjustable in electrical resistivity.

Description

technical field [0001] The invention belongs to the technical field of conductive ceramic materials, in particular to a preparation method of yellow conductive zirconia ceramics. [0002] technical background [0003] Zirconia ceramics have excellent properties such as high strength, high hardness, wear resistance, and chemical corrosion resistance. They have been widely used in jewelry decoration, smartphone back covers, and watch cases, showing huge market opportunities. Colored zirconia ceramics are usually obtained by adding colored glaze and sintering in an oxidizing atmosphere. Not only is the electrical conductivity poor, but the chromaticity fluctuates greatly, so it can only be used as a structural part. The incompatibility of structure and function of zirconia ceramics has led to its in-depth value in the fields of smart wear and electronic consumer products not being fully explored and utilized. [0004] The existing patent CN201810437739.7 discloses a preparation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622
CPCC04B35/48C04B35/481C04B35/622C04B2235/3206C04B2235/3208C04B2235/3217C04B2235/3225C04B2235/3227C04B2235/3229C04B2235/3232C04B2235/3239C04B2235/3241C04B2235/3244C04B2235/3262C04B2235/3275C04B2235/3279C04B2235/3284C04B2235/3418C04B2235/3813C04B2235/3821C04B2235/3839C04B2235/3843C04B2235/3856C04B2235/3886C04B2235/3891C04B2235/404C04B2235/424C04B2235/425C04B2235/444C04B2235/48C04B2235/6586C04B2235/77C04B2235/96C04B2235/9661
Inventor 常鑫烽王春华茹红强王晓孙卫康
Owner 山东东大新材料研究院有限公司
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