Method for preparing ZTA multi-phase ceramic through 3D printing based on stereo lithography appearance

A technology of ceramic powder and photoinitiator, applied in the field of 3D printing, can solve the problems of uneven microstructure and uneven structure of ZTA ceramic materials

Inactive Publication Date: 2017-05-24
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a method for preparing ZTA composite ceramics based on 3D printing of photocuring molding, which is used to solv

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This example is a specific example of preparing ceramic product 1 by using a method for preparing ZTA ceramics provided by the present invention.

[0053] Step 1. Preparation of slurry

[0054] Dissolve 50g of solute in 50g of solvent, mix and stir to obtain premix 1. In this embodiment, the solute is acrylamide, and the solvent is deionized water.

[0055] 12 g of zirconium salt was dissolved in 100 ml of deionized water to prepare zirconium salt solution 1. Zirconium salt solution 1 was mixed with 78g of alumina ceramic powder 1 to ensure that the pH of the mixing system was between 9 and 10 during the mixing process. After the mixing was completed, it was dried and passed through a 100-mesh sieve to obtain composite powder 1. In this embodiment, the alumina ceramic powder has a bimodal structure, the purity of the alumina ceramic powder is greater than 99%, and the alumina ceramic powder is α-Al 2 o 3 , the particle size of alumina ceramics is: 0.1~0.5μm; the zir...

Embodiment 2

[0072] This example is a specific example of preparing ceramic product 2 by using a method for preparing ZTA ceramics provided by the present invention.

[0073] Step 1. Preparation of slurry

[0074] Dissolve 50g of solute in 50g of solvent, mix and stir to obtain premix 2. In this embodiment, the solute is methacrylamide, and the solvent is deionized water and glycerol.

[0075] 18 g of zirconium salt was dissolved in 100 ml of deionized water to prepare zirconium salt solution 2. The zirconium salt solution 2 was mixed with 72g of the alumina ceramic powder 2 to ensure that the pH of the mixing system was between 9 and 10 during the mixing process. After the mixing was completed, it was dried and passed through a 100-mesh sieve to obtain the composite powder 2. In this embodiment, the alumina ceramic powder has a bimodal structure, the purity of the alumina ceramic powder is greater than 99%, and the alumina ceramic powder is α-Al 2 o 3 , the particle size of alumina ce...

Embodiment 3

[0092] This example is a specific example of preparing ceramic product 3 by using a method for preparing ZTA ceramics provided by the present invention.

[0093] Step 1. Preparation of slurry

[0094] Dissolve 50 g of solute in 50 g of solvent, mix and stir to obtain premix 3. In this embodiment, the solute is acrylamide and dimethacrylate, and the solvent is deionized water.

[0095] 20 g of zirconium salt was dissolved in 100 ml of deionized water to prepare zirconium salt solution 3. The zirconium salt solution 3 is mixed with 80 g of the alumina ceramic powder 3 to ensure that the pH of the mixing system is between 9 and 10 during the mixing process. After the mixing is completed, it is dried and passed through a 100-mesh sieve to obtain the composite powder 3 . In this embodiment, the alumina ceramic powder has a bimodal structure, the purity of the alumina ceramic powder is greater than 99%, and the alumina ceramic powder is α-Al 2 o 3 , the particle size of alumina ...

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Abstract

The invention belongs to the technical field of 3D printing, and particularly relates to a method for preparing ZTA multi-phase ceramic through 3D printing based on stereo lithography appearance. The invention provides a composition. The raw materials of the composition comprise a ceramic powder, a premixed liquid, a photoinitiator, a dispersing agent, a surfactant, zirconium salt and titanium salt. The invention also provides a method for preparing ZTA ceramic by using the composition. The method comprises the steps of preparing slurry, forming, drying and degreasing, performing impregnation and performing aftertreatment. In the technical scheme provided by the invention, a ceramic green body is prepared by a stereo lithography appearance method, so the forming efficiency is high and the dimensional precision of the product is high; the parameters in the degreasing step are optimized, so deformation and cracking of the green body in the degreasing process are avoided; through the impregnation step, the sintering temperature of the toughed ZTA ceramic material is reduced under the condition that the additive has minute quantity. Moreover, the microstructure of the product is uniform after the product structure is observed by an electronic speculum, and the defect that the sintering temperature of the ZTA ceramic is high in the prior art is overcome.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a method for preparing ZTA composite ceramics by 3D printing based on light-curing molding. Background technique [0002] 3D printing technology is Stereo lithography Appearance (SLA for short), its principle is: through the computer to control the laser beam of specific wavelength and intensity to scan on the x-y plane, so that it is sequentially solidified from point to line and from line to surface. , so that the ceramic slurry is selectively solidified to complete the drawing operation of one layer, and then the lifting table moves in the vertical direction by the height of one layer, and then solidifies another layer, so that the layers are stacked to form a ceramic body. However, although ZTA ceramic parts with complex structures can be easily prepared by light-curing molding technology, the low-temperature aging phenomenon of ZTA ceramics reduces its streng...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/632C04B35/634C04B35/65B33Y70/00
CPCC04B35/10B33Y70/00C04B35/632C04B35/63424C04B35/65C04B2235/3244C04B2235/6562
Inventor 刘伟伍海东伍尚华吴子薇蒋强国李炼
Owner GUANGDONG UNIV OF TECH
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