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Blue zirconium oxide ceramic and preparation method thereof

A technology of zirconia ceramics and blue, which is applied in the field of ceramics, can solve the problems of inability to mix colorants evenly and uneven color distribution of ceramics, and achieve the effects of improving color uniformity, shortening mass transfer distance, and increasing activity

Active Publication Date: 2017-08-04
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional solid-phase mechanical mixing method is easy to cause uneven color distribution of ceramics because the colorant cannot be mixed evenly.

Method used

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  • Blue zirconium oxide ceramic and preparation method thereof
  • Blue zirconium oxide ceramic and preparation method thereof
  • Blue zirconium oxide ceramic and preparation method thereof

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preparation example Construction

[0031] The invention provides a preparation method of blue zirconia ceramics, comprising the following steps:

[0032] (1) mixing dicobalt oxide, aluminum oxide, silicon dioxide, a dispersant and water to obtain a primary slurry with a solid content of 50% to 60%;

[0033] (2) Sanding the primary slurry to obtain a primary slurry;

[0034] (3) roasting after drying the primary slurry to obtain a blue base material with a cobalt-aluminum spinel structure;

[0035] (4) mixing the blue base material of the cobalt-aluminum spinel structure with zirconia, yttrium oxide, a dispersant and water to obtain a secondary slurry with a solid content of 60-70%;

[0036] (5) Sanding the secondary slurry to obtain a tertiary slurry;

[0037] (6) After mixing the tertiary slurry and binder, perform granulation, molding, debinding and firing to obtain blue zirconia ceramics.

[0038] The present invention mixes dicobalt oxide, aluminum oxide, silicon dioxide, dispersant and water to obtain a...

Embodiment 1

[0054] The total mass of dicobalt, aluminum oxide and silicon dioxide is calculated as 1000 parts. Accurately weigh 460 parts of dicobalt, 539 parts of aluminum oxide, and 1 part of silicon dioxide. Ammonium methacrylate is 2.5 parts, and deionized water is added to adjust the solid content of the slurry to 55%. The material is sanded by a sand mill for 2 hours, the grinding body is zirconia beads with a particle size of 0.6-0.8mm, and the sanding speed is 800r / min. The particle size of the sand-milled material is lower than 80nm.

[0055] Spray and dry the sanded slurry, adjust the atomization frequency to 36 Hz, the inlet air temperature to 300°C, and the outlet air temperature to 90°C. And the dry powder was sintered at 1300°C for 3 hours to form a stable cobalt-aluminum spinel structure blue base material.

[0056] Based on the total mass of cobalt-aluminum spinel structure blue base material, zirconia and yttrium oxide as 1000 parts, accurately weigh 50 parts of cobalt-...

Embodiment 2

[0061] Taking the total mass of dicobalt seoxide, aluminum oxide and silicon dioxide as 1000 parts, accurately weigh 440 parts of dicobalt trioxide, 558 parts of aluminum oxide, and 2 parts of silicon dioxide. Ammonium acrylate is 3 parts, and deionized water is added to adjust the solid content of the slurry to 55%. The material is sanded by a sand mill for 3 hours, the grinding body is zirconia beads with a particle size of 0.5-0.6mm, and the sanding speed is 900r / min. The particle size of the sand-milled material is lower than 80nm.

[0062] Spray and dry the sanded slurry, adjust the atomization frequency to 38Hz, the air inlet temperature to 310°C, and the outlet air temperature to 90°C. And the dry powder was sintered at 1200°C for 4 hours to form a stable blue base material of cobalt-aluminum spinel structure.

[0063] Based on the total mass of cobalt aluminum spinel blue base material, zirconia and yttrium oxide as 1000 parts, accurately weigh 100 parts of cobalt al...

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Abstract

The invention provides blue zirconium oxide ceramic and a preparation method thereof. The preparation method comprises the following steps: mixing cobalt sesquioxide, aluminium oxide, silicon dioxide, a dispersing agent and water to obtain primary slurry; performing sanding treatment on the primary slurry to obtain first-level slurry; drying the first-level slurry and roasting to obtain a blue base material of a cobalt aluminum spinel structure; mixing the blue base material of the cobalt aluminum spinel structure, zirconium oxide, yttrium oxide, the dispersing agent and water to obtain second-level slurry; performing sanding treatment on the second-level slurry to obtain third-level slurry; mixing the third-level slurry and an adhesive, and pelleting, forming, discharging glue and roasting to obtain the blue zirconium oxide ceramic. The grain size of the materials obtained in each step can be fined to be below 80 nm by a sanding technology, the activity of powder materials is improved, the mass transfer distance between particles is shortened, and the cobalt aluminum spinel blue base material can be mixed uniformly, so that the color uniformly of the blue zirconium oxide ceramic is improved.

Description

technical field [0001] The invention relates to the technical field of ceramics, in particular to a blue zirconia ceramic and a preparation method thereof. Background technique [0002] ZrO 2 Ceramics have the characteristics of low thermal conductivity, low thermal expansion coefficient, high chemical stability, excellent mechanical properties, and good corrosion resistance. ZrO 2 Ceramics have not only become a research hotspot in the field of scientific research, but also are widely used in various fields of industry and life, such as zirconia grinding bodies, ceramic knives, dental materials, refractory materials, oxygen sensors, instruments and meters, and high-end decorative ceramic components. [0003] In recent years, with the improvement of people's living standards, the requirements for colored zirconia high-grade decorative ceramics have also been continuously increased, such as color, gloss, brightness, etc. Therefore, there is an urgent need to research and d...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/626
CPCC04B35/481C04B35/62605C04B2235/3217C04B2235/3225C04B2235/3275C04B2235/3418C04B2235/5454C04B2235/602C04B2235/656C04B2235/6567C04B2235/77C04B2235/96C04B2235/9661
Inventor 宋希文包金小周芬谢敏郜建全安胜利张永和
Owner INNER MONGOLIA UNIV OF SCI & TECH
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