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Water-based aluminum oxynitride transparent ceramic slurry for 3D printing and preparation method of water-based aluminum oxynitride transparent ceramic slurry

A technology of aluminum oxynitride and transparent ceramics, applied in the direction of additive processing, etc., can solve the problems of affecting the solid content and viscosity of ceramic slurry, the deviation of component ratio from the expected design, and reducing the printability of aluminum oxynitride transparent ceramic slurry. , to achieve the effect of sufficient supply in the domestic market, moderate viscosity, and excellent optical/mechanical quality

Active Publication Date: 2022-02-08
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, on the one hand, there is no relevant literature report on 3D printing AlON transparent ceramic slurry and its preparation method; on the other hand, whether it is pure AlON phase powder synthesized by carbothermal 2 o 3 The mixture powder with AlN, due to the presence of Al-N bonds that are easy to react with water, will generate ammonia and Al(OH) 3 , will not only cause the component ratio to deviate from the expected design, but also affect the solid content and viscosity of the ceramic slurry, reducing the printability of the aluminum oxynitride transparent ceramic slurry

Method used

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  • Water-based aluminum oxynitride transparent ceramic slurry for 3D printing and preparation method of water-based aluminum oxynitride transparent ceramic slurry
  • Water-based aluminum oxynitride transparent ceramic slurry for 3D printing and preparation method of water-based aluminum oxynitride transparent ceramic slurry
  • Water-based aluminum oxynitride transparent ceramic slurry for 3D printing and preparation method of water-based aluminum oxynitride transparent ceramic slurry

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Experimental program
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Effect test

Embodiment 1

[0065] Embodiment 1: Mainly including preparation of hydration-resistant aluminum oxynitride ceramic powder, preparation of water-based aluminum oxynitride ceramic slurry, 3D printing, high-temperature sintering and other steps:

[0066] (1) Preparation of hydration-resistant aluminum oxynitride ceramic powder: according to Table 1, weigh Al respectively according to the mass ratio of 84.70:15.30 2 o 3 Powder (purity > 99.90%, average particle size 0.65 μm) and AlN powder (purity > 99.90%, average particle size 0.85 μm). Add 0.40wt% MgAl 2 o 4 (purity>99.99%) and 0.10wt% Y 2 o 3 (Purity > 99.99%) As a sintering aid, add 0.12wt% H 3 BO 3 (purity > 99.99%) as a hydration inhibitor, with absolute ethanol as the dispersion medium, using a high-purity alumina ball mill tank, high-purity alumina balls as the ball milling medium to carry out ball milling and mixing of the mixed powder, at 270 rpm Ball milling and mixing under the same conditions for 36 hours, the ball milled s...

Embodiment 2

[0076] The preparation process of the aluminum oxynitride ceramic slurry in Example 2 is as in Example 1, with the difference that: the amount of water added is controlled so that the solid content of the aluminum oxynitride ceramic slurry is 81 wt%.

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Abstract

The invention relates to water-based aluminum oxynitride transparent ceramic slurry for 3D printing and a preparation method of the water-based aluminum oxynitride transparent ceramic slurry. The water-based aluminum oxynitride transparent ceramic slurry for 3D printing is prepared from Al2O3 powder, AlN powder, divalent metal oxide / salt, rare earth oxide, weak acid, a dispersing agent, a thickening agent and water.

Description

technical field [0001] The invention relates to a water-based aluminum oxynitride transparent ceramic slurry for 3D printing and a preparation method thereof, belonging to the field of transparent ceramics. Background technique [0002] Aluminum oxynitride transparent ceramics (AlON) are Al 2 o 3 It is a single cubic phase optically isotropic transparent ceramic produced by high temperature solid solution with AlN according to a certain composition ratio range. AlON transparent ceramics not only have high optical transmittance and wide wave transmission band, but also have better comprehensive mechanical properties than other transparent ceramic materials, and can be widely used in infrared windows, hoods, transparent armor and other fields. [0003] Since McCauly prepared the world's first translucent aluminum oxynitride ceramic in 1976, various preparation methods and molding processes have become increasingly mature. Generally speaking, AlON transparent ceramics with e...

Claims

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Application Information

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IPC IPC(8): C04B35/58C04B35/622C04B35/626C04B35/634C04B35/636C04B35/64B33Y10/00B33Y70/10
CPCC04B35/58C04B35/622C04B35/6261C04B35/64B33Y10/00B33Y70/10C04B35/63404C04B35/63444C04B35/6365C04B2235/3206C04B2235/3222C04B2235/442C04B2235/3225C04B2235/3227C04B2235/3224C04B2235/5436C04B2235/5445C04B2235/9653C04B2235/6026C04B2235/77C04B2235/96
Inventor 陈鹤拓吉浩浩周国红章健毛小建刘娟王士维
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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