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Matt green glaze and firing method

A technology of celadon and glaze, which is applied in the field of firing matt celadon, which can solve the problems of lack of matte, low-grade products, and insufficient porcelain quality, etc., and achieve the effect of good texture and high grade

Inactive Publication Date: 2013-09-18
IND RES INST ZHIJIANG COLLEGE OF ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, ceramic matt glazes are all fired at medium temperature in the market, and the general temperature is controlled between 1260°C and 1280°C. Although there is a matte glaze effect, it cannot reflect the quality of porcelain.
Dehua ceramics are known for their whiteness, especially ivory white, which is crystal clear like fat jade. However, due to the low temperature, it is not completely porcelainized, and the quality of porcelain cannot be fully reflected. The combination effect with matte glaze is not good, and the product grade is low. When it is porcelainized at high temperature, the glaze surface will become brighter, and the matte effect will not be achieved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Glaze formula: 21.06 parts of potassium feldspar, 5.32 parts of calcite, 0.68 parts of talcum powder, 5.87 parts of barium carbonate, 3.26 parts of kaolin, and 1.01 parts of aluminum oxide.

[0018] Firing method:

[0019] (1) Mix the above-mentioned matt glaze with water according to the mass ratio of 100:80, sink and float, and pass through a 120-mesh sieve to obtain a mixed solution. Immerse the bisque-fired green body into the obtained mixed solution, and take it out after 2-3 seconds;

[0020] (2) Put the green body into the kiln, and successively carry out continuous firing in stages according to the initial temperature section, heating section, oxidation section, and high temperature section; after the firing is completed, it is naturally cooled;

[0021] The initial temperature section is fired for 2 hours, and the temperature is burned to about 500°C to remove all the moisture in the green body.

[0022] The heating section is fired for 2 hours, and the temper...

Embodiment 2

[0030] Glaze formula: 21.06 parts of potassium feldspar, 5.32 parts of calcite, 0.68 parts of talcum powder, 3.00 parts of barium carbonate, 3.26 parts of kaolin, and 1.01 parts of aluminum oxide.

[0031] Firing method and firing mode are the same as embodiment 1.

[0032] Embodiment 2 Compared with Example 1, the amount of barium carbonate in Example 2 is reduced to 3.00 parts, and the refractive index of the barium-containing glass phase is relatively large, and the melting ability is relatively poor, so the barium carbonate mainly produces a dull effect in the glaze, but When the content is as low as 3.00 parts, the matte effect of the glaze is weakened.

Embodiment 3

[0034] Glaze formula: 21.06 parts of potassium feldspar, 5.32 parts of calcite, 0.68 parts of talcum powder, 8.00 parts of barium carbonate, 3.26 parts of kaolin, and 1.01 parts of aluminum oxide.

[0035] Firing method and firing mode are the same as embodiment 1.

[0036] Compared with Example 1, the content of barium carbonate in Example 3 is larger, and the final glaze effect has a bitter and dry appearance, and is easily stained by oil stains and sweat, and is not easy to wipe clean.

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Abstract

The invention provides a matt green glaze and a firing method. The matt green glaze comprises the following materials in parts by weight: 18-25 parts of potash feldspar, 2-6 parts of calcite, 0.2-1.0 part of talcum powder, 3-8 parts of barium carbonate, 1-3 parts of kaoline, and 0.1-2.0 parts of aluminum oxide. The matt green glaze disclosed by the invention is fired by high-temperature reduction orderly by stages, and combined with the fired natural cooling process, so that the fired blank is completely vitrified; a clay glaze is completely combined. Thus, the matt green glaze is translucent as fat as jade. Meanwhile, the matt green glaze has the skin effect of ivory glaze, and is warm in glaze and unusual in eye view, handfeel and mouthfeel; the prepared product is high in grade, good in texture, and suitable for preparation of high-end art porcelain.

Description

(1) Technical field [0001] The invention relates to a matt green glaze and a method for firing the matt green glaze by using the glaze. (2) Background technology [0002] At present, ceramic matte glazes are all fired at medium temperature in the market, and the temperature is generally controlled between 1260°C and 1280°C. Although there is a matte glaze effect, it cannot reflect the quality of porcelain. Dehua ceramics are known for their whiteness, especially ivory white, which is crystal clear like fat jade. However, due to the low temperature, it is not completely porcelainized, and the quality of porcelain cannot be fully reflected. The combination effect with matte glaze is not good, and the product grade is low. When it is porcelainized at high temperature, the glaze surface will become brighter, and the matte effect will not be achieved. Therefore, researching the matt glazed surface under the high temperature state just becomes the main purpose of the present inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/86
Inventor 李娟朱龙夏颖翀
Owner IND RES INST ZHIJIANG COLLEGE OF ZHEJIANG UNIV OF TECH
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