Method for preparing dark blue zirconia ceramic

A zirconia ceramic and dark blue technology, which is applied in the field of preparation of dark blue zirconia ceramics, can solve the problems of easy agglomeration of nano-scale zirconia, poor stability of colorants, and reduced product quality, etc., and achieves a simple and easy-to-operate preparation method and a structure. Dense and stable, the effect of solving poor stability

Active Publication Date: 2017-12-22
无锡特科精细陶瓷有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems in the prior art, the present invention provides a method for preparing dark blue zirconia ceramics, which is simple and easy to operate, and the obtained zirconia ceramics have a dense and stable structure, uniform coloring, and have the mechanical properties of zirconia, which not only solves the problem of existing In the existing technology, the stability of the colorant is poor, and it is easy to decompose and destroy during the high-temperature sintering process, which reduces the quality of the product, and solves the problem that nano-sized zirconia is easy to agglomerate and difficult to mix evenly

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  • Method for preparing dark blue zirconia ceramic

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Embodiment 1

[0035] A preparation method of dark blue zirconia ceramics, the formula quality ratio is as follows:

[0036] 10 parts of polyvinylpyrrolidone, 20 parts of absolute ethanol, 10 parts of tetrabutyl zirconate, 1 part of yttrium acetate, 0.5 part of stearic acid, 5 parts of ethanol aqueous solution, 2 parts of aluminum monoacetate, 1 part of cobalt acetate, 2 parts of ammonia 0.1 part of penetrant; the ethanol concentration in the ethanol aqueous solution is 50%, the ammonia concentration is 8%, and the penetrant uses nonylphenol polyoxyethylene ether.

[0037] The preparation steps are as follows:

[0038] Step 1. Add polyvinylpyrrolidone to absolute ethanol, mechanically stir until it is completely dissolved to obtain a low-viscosity alcohol solution, and the mechanical stirring speed is 1000r / min;

[0039] Polyvinylpyrrolidone is abbreviated as PVP. It is a non-ionic polymer compound with colloidal protection, film-forming properties, adhesion, moisture absorption, solubilization and ...

Embodiment 2

[0055] A preparation method of dark blue zirconia ceramics, the formula quality ratio is as follows:

[0056] 15 parts of polyvinylpyrrolidone, 40 parts of absolute ethanol, 12 parts of tetrabutyl zirconate, 2 parts of yttrium acetate, 1.3 parts of stearic acid, 10 parts of ethanol aqueous solution, 2.5 parts of aluminum monoacetate, 1.2 parts of cobalt acetate, 4 parts of ammonia 0.3 parts of penetrant; the ethanol concentration in the ethanol aqueous solution is 80%, the ammonia concentration is 15%, and the penetrant uses octylphenol polyoxyethylene ether.

[0057] The preparation steps are as follows:

[0058] Step 1. Add polyvinylpyrrolidone to absolute ethanol, mechanically stir until it is completely dissolved to obtain a low-viscosity alcohol liquid, and the mechanical stirring speed is 1500r / min;

[0059] Step 2: Add tetrabutyl zirconate and yttrium acetate slowly to the low-viscosity alcohol solution, and mechanically stir until completely dissolved; then ultrasonically reac...

Embodiment 3

[0069] A preparation method of dark blue zirconia ceramics, the formula quality ratio is as follows:

[0070] 12 parts of polyvinylpyrrolidone, 30 parts of absolute ethanol, 11 parts of tetrabutyl zirconate, 1 part of yttrium acetate, 0.9 part of stearic acid, 8 parts of ethanol aqueous solution, 2.2 parts of aluminum monoacetate, 1.1 parts of cobalt acetate, 3 parts of ammonia , 0.2 parts of penetrant; the ethanol concentration in the ethanol aqueous solution is 60%, the concentration of the ammonia water is 12%, and the penetrant uses lauryl polyoxyethylene ether.

[0071] The preparation steps are as follows:

[0072] Step 1. Add polyvinylpyrrolidone to absolute ethanol, mechanically stir until it is completely dissolved to obtain a low-viscosity alcohol liquid, and the mechanical stirring speed is 1300r / min;

[0073] Step 2: Add tetrabutyl zirconate and yttrium acetate slowly to the low-viscosity alcohol solution, and mechanically stir until completely dissolved; then ultrasonic r...

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Abstract

The invention belongs to the technical field of oxide ceramics and in particular relates to a method for preparing a dark blue zirconia ceramic. The method comprises the following steps: by taking zirconium n-butoxide as a base material, yttrium acetate as a stabilizer, polyvinylpyrrolidone as a dispersing agent and an adhesive coating material, and absolute ethyl alcohol as a solvent, performing an ultrasonic reaction so as to obtain a sol solution wrapped by polyvinylpyrrolidone; by taking stearic acid as a dispersing agent and a medium, aluminum monoacetate and cobaltous acetate as raw materials, and ammonium hydroxide as a reaction agent and a pH adjusting agent, and an ethanol solution as a solvent, performing a sealing reaction so as to obtain clear pink sol; mixing the clear pink sol with a penetrant, putting into the sol solution wrapped by polyvinylpyrrolidone, and performing a sealed constant-pressure distillation reaction and a vacuum distillation reaction so as to obtain ceramic powder; and finally performing constant-temperature pressurizing sintering and gradient high-temperature sintering on the ceramic powder, thereby obtaining the dark blue zirconia ceramic. The method provided by the invention is simple and easy to operate, the obtained zirconia ceramic structure is dense and stable and uniform in coloring, and meanwhile has the mechanical properties of zirconium oxide.

Description

Technical field [0001] The invention belongs to the technical field of oxide ceramics and relates to a preparation method of dark blue zirconia ceramics. Background technique [0002] At present, yttria partially stabilized tetragonal zirconia ceramics (3Y-TZP) is a very important structural ceramic material. It has very excellent mechanical properties, with a bending strength of up to 1000MPa and a fracture toughness of up to 10MPa·m 1 / 2 , Has the reputation of ceramic steel, so it has more and more important applications in industrial machinery and daily life. As civilian zirconia ceramic products, they often need good appearance, such as color and gloss. However, the natural sintered zirconia product is ivory white. This single color cannot meet the increasing demand for zirconia decorations, so It is imperative to develop zirconia products of different colors. However, since the sintering temperature of zirconia materials as structural ceramics is higher than 1400℃, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622C04B35/63C04B35/632C04B35/634
CPCC04B35/48C04B35/622C04B35/6303C04B35/632C04B35/63444C04B35/63488C04B2235/3217C04B2235/3225C04B2235/3275C04B2235/449C04B2235/77C04B2235/96C04B2235/9661
Inventor 刘名剑王征
Owner 无锡特科精细陶瓷有限公司
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