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High-toughness ceramic and its preparation method and application

A high-toughness, ceramic technology, applied in the direction of ceramic layered products, chemical instruments and methods, lamination devices, etc., can solve the problems of high processing cost, poor drop resistance, hard ceramics, etc., to ensure the effect of ceramics, increase Wear-resistant, increase the effect of impact damage resistance

Active Publication Date: 2018-01-19
GUANGDONG XINXIU NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of use, it was found that ceramics are brittle materials with poor drop damage resistance, and ceramics are relatively hard and have high processing costs. Therefore, they have not yet been widely used in electronic product casings.

Method used

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  • High-toughness ceramic and its preparation method and application
  • High-toughness ceramic and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Please refer to figure 1 , the high-toughness ceramics of the present invention include three layers of ceramic layers 10 and two layers of fiber layers 20, the fiber layers 20 are interposed between the ceramic layers 10, wherein the fiber layers 20 are long fiber layers of zirconia.

[0049] The high-toughness ceramics described in this embodiment are used as the casing of the mobile phone to form a ceramic casing. The total thickness of the ceramic casing is 0.5 mm, and the thickness of the ceramic layer 10 and the fiber layer 20 are both 0.1 mm.

[0050] The method for preparing above-mentioned high-performance ceramics is:

[0051]The soft ceramic casting sheet is prepared by casting method. Specifically, different ratios of zirconia, alumina, solvent and binder are mixed and ball-milled to form the surface layer and the middle layer of casting slurry, and then passed through the flow casting method. The casting machine prepares the casting slurry into ceramic cas...

Embodiment 2

[0053] Please refer to figure 2 , the high-toughness ceramics of the present invention include two ceramic layers 10 and a fiber layer 20, the fiber layer 20 is interposed between the ceramic layers 10, wherein the fiber layer 20 is a short fiber layer of zirconia.

[0054] The high-toughness ceramic described in this embodiment is used as the shell of the mobile phone to form a ceramic shell. The total thickness of the ceramic shell is 0.5 mm, the thickness of the ceramic layer 10 is 0.2 mm, and the thickness of the fiber layer 20 is 0.1 mm.

[0055] The method for preparing above-mentioned high-performance ceramics is:

[0056] The soft ceramic casting sheet is prepared by casting method. Specifically, different ratios of zirconia, alumina, solvent and binder are mixed and ball-milled to form the surface layer and the middle layer of casting slurry, and then passed through the flow casting method. The casting machine prepares the casting slurry into a ceramic casting sheet...

Embodiment 3

[0059] Please refer to figure 2 , the high-toughness ceramics of the present invention include two ceramic layers 10 and a fiber layer 20, the fiber layer 20 is sandwiched between the ceramic layers 10, wherein the fiber layer 20 is a long fiber layer of alumina.

[0060] The high-toughness ceramics described in this embodiment are used as the casing of the mobile phone to form a ceramic casing. The total thickness of the ceramic casing is 0.3 mm, and the thickness of the ceramic layer 10 and the fiber layer 20 are both 0.1 mm.

[0061] The method for preparing above-mentioned high-performance ceramics is:

[0062] The soft ceramic casting sheet is prepared by casting method. Specifically, different ratios of zirconia, alumina, solvent and binder are mixed and ball-milled to form the surface layer and the middle layer of casting slurry, and then passed through the flow casting method. The casting machine prepares the casting slurry into ceramic casting sheets; makes the long...

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Abstract

The invention discloses a high-toughness ceramic and its preparation method and application. The high-toughness ceramic comprises a plurality of ceramic layers and a plurality of fiber layers sandwiched between the ceramic layers. The fiber layers are zirconia fiber layers or alumina fiber layers. The fibers in the fiber layers comprise long fibers and short fibers. The short fibers comprise chopped fibers and whiskers. The preparation method comprises preparing flexible ceramic casting sheets through a tape casting method, overlaying the ceramic casting sheets and the fiber layers, carrying out pressing molding to obtain a sample blank, carrying out isostatic pressing treatment on the sample blank, and carrying out degreasing and sintering to obtain high-performance ceramic. The high-performance ceramic is used for a housing of an electronic product. Through use of the ceramic fibers between the ceramics, ceramic toughness can be significantly improved and resistance to impact damagesuch as drop damage is improved.

Description

technical field [0001] The invention relates to the technical field of new ceramic materials, in particular to high-toughness ceramics, its preparation method and application. Background technique [0002] Ceramic materials have the advantages of high hardness, good wear resistance and scratch resistance, not easy to corrode, and no electromagnetic shielding effect. They are very suitable as shell materials for electronic products such as mobile phones. At present, ceramics have been used in a small amount in the field of casings of electronic products such as mobile phones. In the process of use, it is found that ceramics are brittle materials with poor drop damage resistance, and ceramics are relatively hard and have high processing costs. Therefore, they have not yet been widely used in electronic product casings. Contents of the invention [0003] Based on this, the present invention provides a high-toughness ceramic. Ceramic fibers are arranged between the ceramics, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B18/00B32B37/06B32B37/10B32B9/04
Inventor 武建文峰汪应山
Owner GUANGDONG XINXIU NEW MATERIAL CO LTD
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