Black ceramic and preparing method thereof

A technology of black ceramics and ceramic materials, which is applied in the field of black ceramics and its preparation, can solve the problems of uneven coloring, uneven surface thickness, and prone to silk screen defects of ceramic materials, and achieve accurate coloring, low light transmittance, and easy realization Effect

Inactive Publication Date: 2016-07-20
CHAOZHOU THREE CIRCLE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the black ceramics currently produced use ink printing technology. Since the screen printing ink contains a large amount of organic resin, this will cause the surface appearance of the screen printing ink to be prone to screen printing defects, making the black ceramics produced prone to bumps, pits, and air bubbles. and uneven surface thickness, which lead to problems such as weak interfacial bonding between the ink layer and the ceramic layer, uneven coloring of ceramic materials, and unstable material properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of embodiment of the black ceramics of the present invention, the black ceramics described in this embodiment comprises the following mole percentage composition: ceramic material 0.1%, dyeing material 99.9%; Wherein said ceramic material is ZrO 2 , the dyeing material is iron oxide.

[0032] The black ceramic described in this embodiment is prepared by the following method:

[0033] (1) ball milling after ceramic material and dyeing material are mixed, obtains the black ceramic slurry that is dispersed uniformly;

[0034] (2) vacuum defoaming the black ceramic slurry obtained in step (1) at -0.01MPa, and then stale processing;

[0035] (3) Injection-molding the black ceramic slurry processed in step (2) to obtain a black ceramic green body, and then process it into a triangle and sinter it. The sintering temperature is 1200° C. and the holding time is 5 hours to obtain a black ceramic green body;

[0036] (4) Grinding and polishing the black ceramic blank obta...

Embodiment 2

[0038] A kind of embodiment of the black ceramics of the present invention, the black ceramics described in this embodiment comprises the following mole percentage composition: ceramic material 30%, dyeing material 70%; Wherein said ceramic material is Al 2 o 3 , the dyeing material is cobalt nitrate.

[0039] The black ceramic described in this embodiment is prepared by the following method:

[0040] (1) ball milling after ceramic material and dyeing material are mixed, obtains the black ceramic slurry that is dispersed uniformly;

[0041] (2) vacuum defoaming the black ceramic slurry obtained in step (1) at -0.1MPa, and then stale processing;

[0042] (3) Dry press the black ceramic slurry processed in step (2) to obtain a black ceramic biscuit, and then process it into a round shape and sinter it. The sintering temperature is 1700° C. and the holding time is 1 hour to obtain black ceramics blank;

[0043] (4) The black ceramic blank obtained in step (3) is mechanically ...

Embodiment 3

[0045] A kind of embodiment of the black ceramics of the present invention, the black ceramics described in this embodiment comprises the following mole percentage composition: ceramic material 50%, dyeing material 50%; Wherein said ceramic material is ZrO 2 (contains 3% mol of Y 2 o 3 ), the dyeing material is copper oxide.

[0046] The black ceramic described in this embodiment is prepared by the following method:

[0047] (1) ball milling after ceramic material and dyeing material are mixed, obtains the black ceramic slurry that is dispersed uniformly;

[0048] (2) vacuum defoaming the black ceramic slurry obtained in step (1) at -0.06MPa, and then stale processing;

[0049] (3) Tape-cast the black ceramic slurry processed in step (2) to obtain a black ceramic green body, and then process it into a polygonal shape and sinter it. The sintering temperature is 1500° C., and the holding time is 3 hours to obtain a black ceramic green body. ;

[0050] (4) The black ceramic bl...

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Abstract

The invention discloses black ceramic applied to the field of fingerprint identification products, mobile phone appearance and decorating parts and other related electronic equipment.The black ceramic comprises a ceramic material and dye, and the molar percentage content of the ceramic material and the molar percentage content in the black ceramic are 0.1-99.9% and 0.1-99.9% respectively; the ceramic material is at least one of ZrO2 and Al2O3, wherein ZrO2 at least contains 0-8% mole of Y2O3, and the dye is a transition metal compound.The black ceramic has the advantages of being high in color accuracy, uniform in coloring, high in strength and low in light transmittance and having a smooth surface mirror plane.

Description

technical field [0001] The invention relates to a ceramic and a preparation method thereof, in particular to a black ceramic and a preparation method thereof which can be used in the fields of fingerprint identification products, mobile phone appearances, decorative parts and other related electronic equipment. Background technique [0002] Ceramic materials have excellent characteristics such as high strength, high hardness, good wear resistance and corrosion resistance, and are widely used in various fields, such as knives, watch cases, molds, mobile phone cases and various ceramic structural parts. In recent years, with the continuous improvement of people's requirements for decorations, black ceramics have become the new favorite in the field of high-end decorations due to their excellent mechanical properties, bright and elegant colors, metallic luster, environmental friendliness, non-toxic and non-allergic, etc., such as pressing Ceramic cover plates for fingerprint re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/10
CPCC04B35/48C04B35/10C04B2235/3217C04B2235/3224C04B2235/3272C04B2235/96C04B2235/963
Inventor 马艳红
Owner CHAOZHOU THREE CIRCLE GRP
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