Ceramic material and preparation method thereof

A ceramic material and ceramic technology, applied in the field of ceramic materials and their preparation, can solve the problems of reducing the qualified rate of finished products, low mechanical properties such as product service life, strength and hardness, easy to produce damage and damage, etc., so as to improve the reflection effect and shorten the Preparation cycle, the effect of improving whiteness

Inactive Publication Date: 2016-07-06
CHAOZHOU THREE CIRCLE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In addition, the raw material cost/processing difficulty of the technical solution based on sapphire is high, resulting in high production costs, while the technical solution based on glass is cheap, but i

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041] Example 1

[0042] An embodiment of the ceramic material of the present invention. The ceramic material of this embodiment includes a ceramic layer, the ceramic layer includes a first phase and a second phase, the first phase includes zirconia and yttrium oxide, and the second The phase contains alumina; and the mass percentage of the zirconia in the ceramic layer is 99.8%, the mass percentage of the yttria in the ceramic layer is 0.1%, and the alumina is in the The percentage by mass in the ceramic layer is 0.1%.

[0043] The ceramic material in this embodiment is prepared by the following method:

[0044] (1) Mix the materials contained in the first phase in the ceramic layer and then ball mill, then add the materials contained in the second phase and continue ball milling to obtain a uniformly dispersed ceramic layer slurry;

[0045] (2) The ceramic layer slurry obtained in step (1) is subjected to vacuum stirring and degassing under an environment of -0.01MPa~-0.1MPa, and ...

Example Embodiment

[0048] Example 2

[0049] An embodiment of the ceramic material of the present invention. The ceramic material of this embodiment includes a ceramic layer and a covering layer. The ceramic layer includes a first phase and a second phase. The first phase includes zirconia and yttrium oxide. The second phase includes alumina; and the mass percentage of the zirconia in the ceramic layer is 65%, the mass percentage of the yttria in the ceramic layer is 15%, and the oxide The mass percentage content of aluminum in the ceramic layer is 20%; the covering layer is white ink and gray ink.

[0050] The ceramic material in this embodiment is prepared by the following method:

[0051] (1) Mix the materials contained in the first phase of the ceramic layer and then ball mill, then add the materials contained in the second phase and continue ball milling to obtain a uniformly dispersed ceramic layer slurry; mix the materials contained in the covering layer and then ball mill, Obtain a uniformly ...

Example Embodiment

[0056] Example 3

[0057] An embodiment of the ceramic material of the present invention. The ceramic material of this embodiment includes a ceramic layer and a covering layer. The ceramic layer includes a first phase and a second phase. The first phase includes zirconia and yttrium oxide. The second phase includes alumina; and the mass percentage of the zirconia in the ceramic layer is 38%, the mass percentage of the yttria in the ceramic layer is 12%, and the oxide The mass percentage of aluminum in the ceramic layer is 50%; the covering layer is gray ink.

[0058] The ceramic material in this embodiment is prepared by the following method:

[0059] (1) Mix the materials contained in the first phase of the ceramic layer and then ball mill, then add the materials contained in the second phase and continue ball milling to obtain a uniformly dispersed ceramic layer slurry; mix the materials contained in the covering layer and then ball mill, Obtain a uniformly dispersed covering lay...

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Abstract

The invention discloses a ceramic material. The ceramic material comprises a ceramic layer and a cover layer coated on the back of the ceramic layer, wherein the ceramic layer comprises a first phase and a second phase; the first phase comprises zirconium oxide and yttrium oxide; and the second phase comprises aluminum oxide. According to the ceramic material, the yttrium oxide is utilized to stabilize the zirconium oxide, and the aluminum oxide is used as a heterogenous whitener. The ceramic material has the advantages of high hardness, high strength, higher dielectric constant and favorable shading effect, and can be used in the field of fingerprint identification electronic devices. The invention also discloses a preparation method of the ceramic material.

Description

Technical field [0001] The invention relates to a ceramic material and a preparation method thereof, in particular to a ceramic material which can be used in the field of fingerprint identification electronic equipment and a preparation method thereof. Background technique [0002] Fingerprint recognition technology is gradually being applied in fields such as computers and mobile phones, and fingerprint recognition products are also recognized by more and more users. The second-generation capacitive fingerprint recognition technology has the advantages of low loss, small size, and low cost, and has broad application prospects in the fields of small electronic devices and mobile phones. The key technology of capacitive sensor lies in the performance of the material, which is also an important problem in the fields of small electronic devices such as fingerprint identification parts and mobile phone covers. The dielectric constant directly affects the signal response speed, and th...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B41/82
CPCC04B35/48C04B41/009C04B41/46C04B41/82C04B2235/3217C04B2235/3225
Inventor 夏亚飞徐苏龙
Owner CHAOZHOU THREE CIRCLE GRP
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