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Modified zirconium oxide ceramic material and application thereof

A zirconia ceramic and modification technology, applied in the modified zirconia ceramic material and its application field, can solve the problems of low dielectric constant, high cost, single color, etc., and achieve high dielectric constant, convenient preparation and composition. simple effect

Inactive Publication Date: 2015-03-25
CHAOZHOU THREE CIRCLE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high cost, low dielectric constant and single color in the existing dielectric cover material, and to solve the problems of low toughness, low bending strength, and durability in the existing dielectric cover material. Problems of poor abrasiveness and poor adhesion between coating and coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Modified zirconia ceramic material

[0062] A modified zirconia ceramic material comprises the following components in terms of mole percentage concentration: 2 mol% of yttrium oxide, 0.1 mol% of titanium oxide, and 97.9 mol% of zirconia.

[0063] The modified zirconia ceramic material made by mixing the above components is white zirconia powder, the particle size of the powder is 0.1-3.0μm, and the specific surface area of ​​the powder is 5.0-15m 2 / g.

[0064] Zirconia ceramic dielectric cover

[0065] A zirconia ceramic dielectric cover plate is prepared from a modified zirconia ceramic material containing the above components by tape casting, and the specific steps are as follows:

[0066] 1) Make a stamping die, design the stamping die according to the requirements of the drawings, and according to the formula requirements, the shrinkage rate from the die to the burnt billet can be designed to be 1.282;

[0067] 2) Ball milling: use white zirconia powder, bin...

Embodiment 2

[0076] Modified zirconia ceramic material

[0077] A modified zirconia ceramic material comprises the following components in terms of mole percentage concentration: 2.3 mol% of yttrium oxide, 0.2 mol% of titanium oxide, 5 mol% of aluminum oxide, 1 mol% of barium titanate, and 91.5 mol% of zirconia.

[0078] The modified zirconia ceramic material made by mixing the above components is white zirconia powder, the particle size of the powder is 0.1-3.0μm, and the specific surface area of ​​the powder is 5-15m 2 / g.

[0079] Zirconia ceramic dielectric cover

[0080] A zirconia ceramic dielectric cover plate is prepared from a modified zirconia ceramic material containing the above components by tape casting, and the specific steps are the same as in Example 1.

[0081] The Vickers hardness of the prepared zirconia ceramic dielectric cover plate is 1200HV, the three-point bending strength is 1060MPa, and the fracture toughness is 5.5Mpa m 1 / 2 , the dielectric constant is 43,...

Embodiment 3

[0083] Modified zirconia ceramic material

[0084] A modified zirconia ceramic material, in terms of mole percentage concentration, comprises the following components: 3 mol% of yttrium oxide, 0.5 mol% of titanium oxide, 10 mol% of aluminum oxide, and 86.5 mol% of zirconia.

[0085] The modified zirconia ceramic material made by mixing the above components is white zirconia powder, the powder particle size (D50) is 0.4-0.8μm, and the powder specific surface area (BET) is 10-15m 2 / g.

[0086] Zirconia ceramic dielectric cover

[0087] A zirconia ceramic dielectric cover plate is prepared from a modified zirconia ceramic material containing the above components through an injection molding process, and the specific steps are as follows:

[0088] 1) Make an injection molding mold, design the injection molding mold for the ceramic dielectric cover plate according to the requirements of the drawings, and according to the formula requirements, the shrinkage ratio from the mold...

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Abstract

The invention discloses a modified zirconium oxide ceramic material. The modified zirconium oxide ceramic material comprises the following components in percentage by molar concentration: 0-6mol% of yttrium oxide, 0-15mol% of cerium oxide, 0.02-1mol% of titanium oxide, 0-20mol% of aluminum oxide, 0-5mol% of barium titanate and the balance of zirconium oxide. The invention also discloses zirconium oxide ceramic and a dielectric cover plate prepared from the modified zirconium oxide ceramic material. The dielectric cover plate prepared from the modified zirconium oxide ceramic material has the advantages of high hardness, good toughness, high strength and high dielectric constant.

Description

technical field [0001] The invention belongs to the field of material manufacture and application, in particular to a modified zirconia ceramic material and its application. Background technique [0002] At present, many smart phones have fingerprint recognition function, such as Iphone5S, iphone6, Huawei Mate7 and so on. Compared with the usual digital and image unlocking, fingerprint recognition unlocking has the advantages of being safer and faster. Therefore, the fingerprint recognition function will surely become an essential function of smart phones in the future. As a fingerprint identification module for mobile phones, it is required to have excellent practicability, that is, to have sensitive fingerprint identification speed and excellent wear resistance; at the same time, it must have a beautiful appearance and appearance texture. Therefore, materials with excellent wear resistance are usually selected as the dielectric cover to protect the fingerprint recognitio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622
Inventor 邱基华杨双节腾双双
Owner CHAOZHOU THREE CIRCLE GRP
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