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Color transparent ceramic and preparation method thereof

A transparent ceramic and colored technology, applied in the field of ceramic materials, can solve problems such as the generation of chloride ions and nitrate ions, the process does not meet environmental protection requirements, and the process is complicated, and achieves low raw material costs, shortened sintering time, and simplified preparation processes. Effect

Inactive Publication Date: 2019-09-06
深圳市丁鼎陶瓷科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the chemical co-precipitation process involves soluble precursors (chloride or nitrate, etc.), pollutants such as chloride ions and nitrate ions will be generated during the preparation process, making the process not environmentally friendly.
At the same time, the entire preparation process and cleaning process need to use a large amount of high-purity water, making the process complicated and lengthy, and additionally increasing the production cost

Method used

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  • Color transparent ceramic and preparation method thereof
  • Color transparent ceramic and preparation method thereof

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preparation example Construction

[0026] The present invention will be further described below in combination with more specific embodiments, but it should be pointed out that the colored transparent ceramic and its preparation method of the present invention are not limited to this specific form or steps. Those skilled in the art can obviously understand that the following explanations can be directly applied to other similar compounds or preparation methods not specified herein even without any adjustment or modification.

[0027] Such as figure 1 Shown, the preparation method of colored transparent ceramic of the present invention comprises the following steps:

[0028] S1: Put the oxide powder, coloring agent and sintering aid in a ball milling tank according to a certain ratio, and add an appropriate amount of deionized water or absolute ethanol at the same time, and use a planetary ball mill for continuous ball milling at room temperature for 2-12 hours;

[0029] Among them, the oxide powder can be Y 2...

Embodiment 1

[0044] S1: To 10kg of yttrium aluminum garnet (Y 3 Al 5 o 12 ) powder, add 0.5kg transition metal oxide CoO as a colorant, 0.05kg of LiF and 0.05kg of SiO 2 As a sintering aid, put the resulting mixture into a nylon ball mill jar, and put alumina balls and deionized water at the same time; make the weight ratio of the aforementioned powder mixture to the alumina balls 1:20, and the added deionized water The amount of ionic water is just enough to submerge the powder and balls; the powder is ball milled with a planetary ball mill, the speed of the ball mill is 200 rpm, and the ball milling time is 12 hours.

[0045] S2: After the ball milling, transfer the ball-milled slurry to a glass vessel of appropriate size, and place it in a drying oven for drying treatment. The drying temperature is 90° C. and the drying time is 2 hours.

[0046] S3: The dried powder has agglomeration and needs to be crushed; use the corresponding crushing method according to the degree of agglomerati...

Embodiment 2

[0053] S1: To 1kg yttrium aluminum garnet (Y 3 Al 5 o 12 ) powder, add 0.01kg transition metal oxide CoO and 0.01kg rare earth element oxide Nd 2 o 3 , 0.01kg of LiF and 0.01kg of MgO are used as sintering aids, the resulting mixture is put into a nylon ball mill jar, and alumina balls and deionized water are put into it at the same time; the weight ratio of the powder mixture to the alumina balls is The ratio is 1:15, and the amount of deionized water added is just enough to submerge the powder and balls; use a planetary ball mill for ball milling, the speed of the ball mill is 180 rpm, and the ball milling time is 10 hours.

[0054] S2: After the ball milling, transfer the ball-milled slurry to a glass petri dish of appropriate size, and place it in a drying oven for drying treatment. The drying temperature is 90° C. and the drying time is 4 hours.

[0055] S3: The dried powder has agglomeration and needs to be crushed; use the corresponding crushing method according to ...

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Abstract

The invention discloses a color transparent ceramic and a preparation method thereof. The preparation method comprises: completely mixing the power of a to-be-obtained color transparent ceramic, a coloring agent and a sintering aid by using a planetary ball milling process, carrying out ball milling for a predetermined time, drying, carrying out breaking screening on the dried powder, and sequentially carrying out pre-pressing molding, cold isostatic pressing treatment, high-temperature sintering and grinding / polishing to prepare the color transparent ceramic sample. According to the present invention, the color transparent ceramic can be prepared; by using the composite sintering aid, the sintering process of the ceramic is effectively promoted, the sintering temperature is reduced, and the light transmittance of the transparent ceramic is improved; and the preparation process is simplified by adding the coloring agent at one time.

Description

technical field [0001] The invention relates to the technical field of ceramic materials, in particular to a colored transparent ceramic and a preparation method thereof. Background technique [0002] Traditional applications of colored transparent ceramics include solid-state lasers, infrared windows, armored glass, etc. New applications have gradually emerged for transparent ceramics this year, such as solid-state lighting, mobile phone screens, and decorations. With the continuous expansion of its application range and the increase of people's demand for it, it is increasingly required to be low-cost, easy to operate, and mass-produced. [0003] Theoretically speaking, the matrix material of colored transparent ceramics must first have a higher symmetry crystal structure, and the cubic crystal structure is the best, and the tetragonal crystal structure and hexagonal crystal structure are also acceptable, because they have no or only very weak double refraction problem. ...

Claims

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Application Information

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IPC IPC(8): C04B35/44C04B35/10C04B35/622C04B35/63
CPCC04B35/10C04B35/44C04B35/622C04B35/6303C04B2235/3206C04B2235/3224C04B2235/3225C04B2235/3275C04B2235/3279C04B2235/3418C04B2235/445C04B2235/5436C04B2235/602C04B2235/608C04B2235/656C04B2235/6567C04B2235/6581C04B2235/9653C04B2235/9661
Inventor 孔令兵丁涛
Owner 深圳市丁鼎陶瓷科技有限公司
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