Golden yellow Y-Zr structural ceramics and preparation method thereof

A technology of golden yellow and ceramic products, which is applied in the field of structural ceramics and can solve problems such as single color

Active Publication Date: 2013-01-09
QIANDONG RARE EARTH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiency of the single color of the current zirconia ceramic products, the present invention provides a whole golden yellow yttrium-zirconium structure ceramic and its preparation method

Method used

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  • Golden yellow Y-Zr structural ceramics and preparation method thereof
  • Golden yellow Y-Zr structural ceramics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] see figure 1 , Step 1: Dissolve zirconium oxychloride in water to make 80 g / L (use ZrO 2 count), Y 2 o 3 , Tb 4 o 7 、Pr 6 o 11 , La 2 o 3 、Gd 2 o 3 , CeO 2 Dissolve with nitric acid to make 0.50mol / L nitrate solution respectively, ingredients 100kg (calculated as oxide): take ZrO 2 =82.95kg, Y 2 o 3 =5.2kg, Tb 4 o 7 =0.4kg, Pr 6 o 11 =1.2kg, La 2 o 3 =0.05kg, Gd 2 o 3 =0.2kg, CeO 2 =10.0kg, join in the reactor of 2000 liters, stir and mix for subsequent use.

[0020] Step 2: Prepare the golden yellow yttrium zirconium hydroxide precursor by chemical co-precipitation method, the process is: 3m 3 Add 500L of deionized water and 1.2kg of dispersant to the enamel reaction kettle, stir evenly, slowly raise the temperature to 60°C, and simultaneously slowly add the ingredients in step 1 and ammonia water with a concentration of 3N, control the reaction temperature at 60-65°C, and control the final reaction temperature. The pH value is 8, and the reacti...

Embodiment 2

[0026] see figure 1 , Step 1: Dissolve zirconium oxychloride in water to form 81 g / L (in the form of ZrO 2 count), Y 2 o 3 , Tb 4 o 7 、Pr 6 o 11 , La 2 o 3 、Gd 2 o 3 Dissolved with nitric acid to make 0.51mol / L nitrate solution respectively, ingredients 100kg (converted into oxide): take ZrO 2 =88.0kg, Y 2 o 3 =4.0kg, Tb 4 o 7 =1.5kg, Pr 6 o 11 =5.0kg, La 2 o 3 =0.4kg, Gd 2 o 3 =0.1kg, CeO 2 =1.0kg, add it into a 2000-liter mixing tank and mix well for later use.

[0027] Step 2: Prepare the golden yellow yttrium zirconium hydroxide precursor by chemical co-precipitation method, the process is: 3m 3Add 500L of deionized water and 1.2kg of dispersant to the enamel reaction kettle, stir evenly, slowly raise the temperature to 65°C, and simultaneously slowly add the batching liquid and ammonia water with a concentration of 3N in step 1, and control the reaction temperature to 60-65°C. The final pH value of the process is 9, and the reaction time is 3 hours....

Embodiment 3

[0032] see figure 1 , Step 1: Dissolve zirconium oxychloride in water to form 80 g / L, Y 2 o 3 、Nd 2 o 3 、Er 2 o 3 , La 2 o 3 、Sc 2 o 3 Dissolved with nitric acid to make 0.50mol / l respectively, and 100 kg of ingredients are converted into oxides) to take ZrO 2 =88.0 kg, Y 2 o 3 =4.0 kg, Tb 4 o 7 =0.3 kg, Pr 6 o 11 =2.5 kg, La 2 o 3 =0.1 kg, Gd 2 o 3 =0.1 kg, CeO 2 =5.0kg, successively added to a 2000-liter mixing tank, stirred and mixed for later use;

[0033] Step 2: Precipitate by chemical co-precipitation method, the reaction process is: 3m 3 Add 500L of deionized water and 1.2kg of dispersant to the enamel reaction kettle, stir evenly, slowly raise the temperature to 60°C, and simultaneously slowly add the batching liquid in step 1 and the ammonia precipitation agent with a concentration of 3N, and control the reaction temperature to 60-65°C. The final pH value of the reaction process is 8-9, and the reaction time is 2 hours. After the reaction is com...

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Abstract

The invention relates to a golden yellow Y-Zr structural ceramics and a preparation method thereof, belonging to the technical field of structural ceramics. The golden yellow Y-Zr structural ceramics is composed of 4.0-5.5 wt% of Y2O3, 80-94.5 wt% of ZrO2, 0-2.0 wt% of Tb4O7, 0-6.0 wt% of Pr6O11, 0-0.50 wt% of La2O3, 0-0.30 wt% of Gd2O3 and 0-15.0 wt% of CeO2. The preparation method of the golden yellow Y-Zr structural ceramics is as follows: burdening, precipitating, washing, dry pressing to obtain the precursor of golden yellow Y-Zr structural ceramics powder, firing, grinding by vibration, smashing by airflow, spraying, prilling, dry pressing for molding (or injection molding), mechanically machining, and obtaining the finished product.

Description

technical field [0001] The invention relates to a golden yellow yttrium-zirconium structural ceramic and a preparation method thereof, belonging to the technical field of structural ceramics. Background technique [0002] Since the invention of zirconia structural ceramics in the last century, it has developed from calcium oxide and magnesia stabilized zirconia to single yttria stabilized zirconia. [0003] As we all know, yttrium-zirconium structural ceramic products at home and abroad have been widely used in industrial and civil fields, especially in recent years, civil products have shown a trend of rapid development. Products such as ceramic knives and ceramic watches have begun to enter the daily life of the general public. At present, the color of zirconia ceramic products at home and abroad is single, which can no longer meet the market demand. In the past, ceramic products, including ceramic works of art, only had a golden yellow glaze on the surface but not a gol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/622
Inventor 龚斌刘革命扬惠明王文平李联和钟晓林谢楠
Owner QIANDONG RARE EARTH GRP
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