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Submicron-nanometer level red ceramic pigment and manufacturing method thereof

A technology of ceramic pigments and manufacturing methods, applied in the field of ceramic pigments, to achieve the effects of strong color development, good dispersibility, and small particle size

Inactive Publication Date: 2013-09-11
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no bibliographical report on the manufacture of chromium-yttrium-aluminum red ceramic pigments by low-temperature combustion synthesis

Method used

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  • Submicron-nanometer level red ceramic pigment and manufacturing method thereof
  • Submicron-nanometer level red ceramic pigment and manufacturing method thereof
  • Submicron-nanometer level red ceramic pigment and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of submicron-nanometer red ceramic pigment, the general formula of its composition is: YAl 1-x Cr x o 3 , where x = 0.01~0.1. The manufacture step of described submicron-nanometer red ceramic pigment is (see attached figure 1 ):

[0039] (1) Ingredients

[0040] Prepare mixed solution by mass percentage: chromium nitrate 2wt%, yttrium nitrate 15wt%, aluminum nitrate 15wt%, citric acid 20wt%, mineralizer (CaCO 3 , KCl, MgF 2 、Na 2 B 4 o 7 ) 5wt%, deionized water 43wt%, the starting material is mixed uniformly in deionized water;

[0041] (2) Mixing and heating

[0042] Adjust the pH value of the mixed solution prepared in step (1) to 7 with ammonia water, stir it fully, heat it in a microwave oven until bubbling, boiling, and evaporation to form a sol-gel; continue heating until a certain temperature is reached, and the gel Start to ignite and burn, and obtain a loose foamy precursor after burning;

[0043] (3) heat treatment

[0044] The precursor o...

Embodiment 2

[0048] In addition to the mineralizer in the raw material composition is 5wt% NaF, MgF 2 , Li 2 CO 3 Outside, other composition and implementation step are with embodiment 1. The obtained precursor was sintered in a muffle furnace at a sintering temperature of 1200°C and a sintering time of 1.5 hours to obtain chromium yttrium aluminum red ceramic pigments (YAl 1-x Cr x o 3 ) powder; the chromium yttrium aluminum red ceramic pigment powder is wet milled for 1 hour, and the particle size of the powder can reach D 50 0.4μm, D 90 is 0.8 μm, and its chromaticity value is shown in sample number 2 in Table 1.

Embodiment 3

[0050] In addition to the mineralizer in the raw material composition is 5wt% CaCO 3 , except KCl, other composition and implementation steps are with embodiment 1. The obtained precursor was sintered in a muffle furnace, the sintering temperature was 1000°C, and the sintering time was 3 hours to obtain chromium yttrium aluminum red ceramic pigment (YAl 1-x Cr x o 3 ) powder; the chromium yttrium aluminum red ceramic pigment powder is wet milled for 1 hour, and the particle size of the powder can reach D 50 0.4μm, D 90 is 0.6 μm, and its chromaticity value is shown in sample number 3 in Table 1.

[0051] Table 1. Chroma values ​​of chromium yttrium aluminum red ceramic pigments

[0052] .

[0053] attached figure 2 X-ray diffraction analysis (XRD) images of the chromium yttrium aluminum red ceramic pigments obtained for Examples 1-3.

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Abstract

The invention relates to the technical field of ceramic pigment, in particular to a submicron-nanometer level red ceramic pigment and a manufacturing method thereof. The general form of the red ceramic pigment is YAL1-xCrxO3, wherein x=0.01-0.1, and the particle size distribution of the pigment is 90-900 nm. The manufacturing steps comprise: 1, burdening: using chromic nitrate, yttrium nitrate, aluminum nitrate and citric acid as starting raw materials; 2, mixing and heating: dissolving the starting raw materials into the deionized water, and adding a mineralizing agent into the solution and stirring the agent until the agent is fully dissolved, and regulating the pH value to 5-10 by ammonia water, and heating the solution by microwaves to lead the solution burn to form a precursor; 3, heat treatment: performing heat treatment on the precursor for 0.5-8 h at 700-1, 300 degrees centigrade to obtain chromium-doped yttrium aluminum red ceramic dye powder; 4, grinding: ball milling the powder for 0.3-2 h to obtain a submicron-nanometer level red ceramic pigment with a particle size distribution of 90-900 nm. The red ceramic pigment manufactured by the manufacturing method disclosed by the invention has advantages of strong color development ability, small grain diameter and good dispersibility.

Description

technical field [0001] The invention relates to the technical field of ceramic pigments, in particular to a low-temperature combustion-synthesized submicron-nanometer red ceramic pigment and a manufacturing method thereof. Background technique [0002] Synthetic inorganic pigments with a certain crystal structure can be used for coloring and decoration of ceramics, glass and other materials. There are various means of decoration, such as color dry grain decoration, screen printing, roller printing, digital inkjet printing, etc. Different decoration methods have different requirements for ceramic pigments. Therefore, in order to adapt to the development trend of diversification and individualization of ceramic industry products, the synthesis technology of ceramic pigments is also actively developing, and the varieties of ceramic pigments are constantly being introduced. [0003] At the end of the 20th century, a number of (ceramic) powder preparation technologies were born...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/85C09C1/40C09C3/04
Inventor 黄建国刘飞李雪涛吴声团郑杰
Owner EAST CHINA UNIV OF SCI & TECH
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