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Method for improving electrofusion zirconia chromophoric redness value

A technology of fused zirconia and red color, applied in the field of ceramic pigments, can solve the problems of complex production and high cost, and achieve the effects of improving yellowness, improving temperature resistance and improving structure

Inactive Publication Date: 2009-03-11
SANXIANG ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country is a big country in the production of ceramics. Zirconium-based pigments occupy an important position in the commonly used pigments for glazes and blanks of ceramics, such as zirconium-based three primary color pigments zirconium vanadium blue (Zr, V)SiO 4 , Zirconium Praseodymium Yellow (Zr, Pr) SiO 4 , Zirconium iron red (Zr, Fe) SiO 4 , so the quality of fused zirconia: including the lightness, hue (redness value, yellowness value), and chroma (color saturation) of the pigment, especially the high temperature stability of the pigment directly affects the produced zirconium The quality of vanadium blue and zirconium praseodymium yellow, while high-quality fused zirconia generally has a higher cost and is more complicated to make

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The pigment grade zirconia powder is pre-calcined, the pre-calcination temperature is 1000°C, the pre-calcination time is 8 hours, and the pre-calcined zirconia powder is used as a praseodymium yellow material, which is comparable to the uncalcined similar zirconium powder In contrast, the yellowness of the praseodymium yellow material is obviously improved, the brightness is reduced, and the redness is increased, that is, the comprehensive effect of the color material is obviously improved.

Embodiment 2

[0014] Pigment-grade zirconia powder is pre-calcined, the pre-calcination temperature is 1400 ° C, and the pre-calcination time is 15 hours. The ceramic pigment (praseodymium yellow, vanadium blue) produced by the pre-calcined zirconia product, Compared with the uncalcined zirconium powder of the same kind, the ceramic pigment produced by the pre-calcined zirconia product has better temperature resistance and is not easy to fade when used in high-temperature ceramic glaze water.

Embodiment 3

[0016] The pigment grade zirconia powder is pre-calcined, the pre-calcination temperature is 1200° C., and the pre-calcination time is 12 hours.

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PUM

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Abstract

The invention provides a method for improving a chromophoric value of degree of red of an electric melted zirconia, which is to carry out pre-calcining on pigment-grade zirconia powder under a proper condition. The method is simple and practicable, improves the application quality and stability of zirconia products in ceramic pigments (like praseodymium yellow and zirconium vanadium blue) remarkably, improves the yellowness index of praseodymium yellow pigment remarkably, reduces the brightness, and improves the degree of red and the heat-resistance performance of the ceramic pigment produced by the zirconic products, and has low cost, which makes the products have excellent market competitiveness and remarkable economic value.

Description

technical field [0001] The invention belongs to the technical field of ceramic pigments, and more specifically relates to a method for increasing the redness value of fused zirconia. Background technique [0002] my country is a big country in the production of ceramics. Zirconium-based pigments occupy an important position in the commonly used pigments for glazes and blanks of ceramics, such as zirconium-based three primary color pigments zirconium vanadium blue (Zr, V)SiO 4 , Zirconium Praseodymium Yellow (Zr, Pr) SiO 4 , Zirconium iron red (Zr, Fe) SiO 4 , so the quality of fused zirconia: including the lightness, hue (redness value, yellowness value), and chroma (color saturation) of the pigment, especially the high temperature stability of the pigment directly affects the produced zirconium The quality of vanadium blue and zirconium praseodymium yellow, while high-quality fused zirconia generally has a higher cost and is more complicated to make. Contents of the inv...

Claims

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Application Information

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IPC IPC(8): C04B41/86
Inventor 程诗忠叶旦旺朱忠雄
Owner SANXIANG ADVANCED MATERIALS
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