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Preparation of laser-sintered 3D-printed YAG transparent ceramic powder

A technology of transparent ceramics and 3D printing, applied in the preparation of YAG transparent ceramic powder formed by laser sintering 3D printing, laser sintering 3D printing, and the preparation of rapid prototyping powder materials by laser sintering 3D printing, which can solve the inconsistency of ceramic bodies Shrinkage, poor fluidity of dry powder, large friction between particles, etc., to achieve the effects of easy storage, good fluidity and stable properties

Inactive Publication Date: 2017-01-25
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of preparing YAG transparent ceramics by solid-state reaction sintering method, direct drying of ball-milling slurry will lead to serious agglomeration and irregular shape of nano-micron powder, poor fluidity of dry powder, and high friction between particles, which is not conducive to the subsequent molding process. This phenomenon is more serious when preparing large size, complex shape and composite structure, and becomes the main source of the second phase and residual pores in the ceramic sintered body, and may also lead to inconsistent shrinkage of the ceramic body, and even cracking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) YAG transparent ceramic powder pretreatment: YAG transparent ceramic powder is dried, ground, sieved, and the particle size is controlled within the range of 0.1-5 μm to obtain pretreated YAG transparent ceramic powder;

[0026] (2) Preparation of granulated YAG transparent ceramic powder: In the reactor, add water: 5000mL, polyvinyl alcohol: 50g, soluble starch: 50g, heat to dissolve, ammonium citrate: 20g, stir to dissolve, and then add pre- Treat YAG transparent ceramic powder: 4900g, vigorously stir, react for 5h, and then spray dry to obtain granulated YAG transparent ceramic powder, the particle size of which is in the range of 50~120µm;

[0027] (3) Preparation of YAG transparent ceramic powder formed by laser sintering and 3D printing: In the grinder, respectively add and granulate YAG transparent ceramic powder: 86g, zinc stearate: 1.0g, propylenediamine: 0.5g, ABS Resin: 7g, turn on the grinder at 250 rpm, grind for 60 minutes, add N,N-dimethylamide: 6mL, ...

Embodiment 2

[0029] (1) YAG transparent ceramic powder pretreatment: YAG transparent ceramic powder is dried, ground, sieved, and the particle size is controlled within the range of 0.1-5 μm to obtain pretreated YAG transparent ceramic powder;

[0030] (2) Preparation of granulated YAG transparent ceramic powder: In the reactor, add water: 5200mL, polyvinyl alcohol: 60g, soluble starch: 40g, heat to dissolve, ammonium citrate: 30g, stir to dissolve, and then add pre- Treat YAG transparent ceramic powder: 4800g, vigorously stir, react for 4 hours, and then spray dry to obtain granulated YAG transparent ceramic powder, the particle size of which is in the range of 50~120µm;

[0031] (3) Preparation of YAG transparent ceramic powder formed by laser sintering and 3D printing: In the grinder, respectively add and granulate YAG transparent ceramic powder: 90g, zinc stearate: 0.5g, propylenediamine: 0.2g, ABS Resin: 4g, turn on the grinder at 250 rpm, grind for 60 minutes, add N,N-dimethylamide: ...

Embodiment 3

[0033] (1) YAG transparent ceramic powder pretreatment: YAG transparent ceramic powder is dried, ground, sieved, and the particle size is controlled within the range of 0.1-5 μm to obtain pretreated YAG transparent ceramic powder;

[0034] (2) Preparation of granulated YAG transparent ceramic powder: In the reactor, add water: 10000mL, polyvinyl alcohol: 100g, soluble starch: 100g, heat to dissolve, ammonium citrate: 50g, stir to dissolve, and then add pre- Treat YAG transparent ceramic powder: 10000g, vigorously stir, react for 6h, and then spray dry to obtain granulated YAG transparent ceramic powder, the particle size of which is in the range of 50~120µm;

[0035] (3) Preparation of YAG transparent ceramic powder formed by laser sintering and 3D printing: In the grinder, respectively add and granulate YAG transparent ceramic powder: 170g, zinc stearate: 3.0g, propylenediamine: 2.0g, ABS Resin: 12g, turn on the grinder at 250 rpm, grind for 60 minutes, add N,N-dimethylamide:...

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Abstract

The invention discloses a preparation method of laser-sintered 3D-printed YAG transparent ceramic powder, characterized in that first, YAG (yttrium aluminum garnet) transparent ceramic is prepared into granulated powder having a particle size in the range of 0.1-5 Mum; second, 82-90% of the granulated YAG transparent ceramic powder, 0.5-1.5% of zinc stearate, 0.2-1.0% of propane diamine, and 4-10% of ABS (acrylonitrile butadiene styrene) resin are added into a grinding machine and are ground for 60 min, 4-12% of N,N-dimethylformamide is added, grinding is performed at 250 r / m for 100-120 min, and drying is performed to obtain the laser-sintered 3D-printed YAG transparent ceramic powder; the powder is directly formable by laser sintering, is high in sphericity, good in mobility and high in forming precision.

Description

technical field [0001] The invention relates to a preparation method of laser sintering 3D printing rapid prototyping powder material, which belongs to the field of rapid prototyping materials, in particular to a preparation method of laser sintering 3D printing YAG transparent ceramic powder and laser sintering 3D printing molding. Background technique [0002] YAG, is the abbreviation of yttrium aluminum garnet, the chemical formula is Y 3 Al 5 o 12 , by Y 2 o 3 and Al 2 o 3 A composite oxide formed by the reaction, which belongs to the cubic crystal system and has a garnet structure. The unit cell of garnet can be viewed as a linked network of dodecahedrons, octahedrons, and tetrahedra. Since Ikesue used the solid-state reaction sintering method to prepare Nd:YAG transparent ceramics in 1995 and realized continuous laser output, laser ceramics have achieved rapid development due to their short preparation cycle, easy realization of uniform and high-concentration do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/44C04B35/505C04B35/626C04B35/622C04B35/64B33Y70/00B33Y10/00
CPCB33Y10/00B33Y70/00C04B35/44C04B35/505C04B35/622C04B35/626C04B35/6261C04B35/62695C04B35/64C04B2235/665
Inventor 李慧芝杨秋苹张培志
Owner UNIV OF JINAN