Ceramic blank crystalline glaze and preparation process thereof

A preparation process and technology of crystalline glaze, which is applied in the field of medium-temperature crystalline glaze and its production process, can solve the problems of small crystal flowers, high price, and high cost, and achieve the effect of smooth and bright glaze surface, high industrial value, and high yield rate

Inactive Publication Date: 2019-08-06
WUXI INST OF ARTS & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] A ceramic with a blue crystalline glaze layer on the surface and its preparation method (publication number 104909569A) discloses a ceramic with a blue crystalline glaze layer on the surface, but the

Method used

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  • Ceramic blank crystalline glaze and preparation process thereof
  • Ceramic blank crystalline glaze and preparation process thereof
  • Ceramic blank crystalline glaze and preparation process thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0048] A crystalline glaze for pottery blanks, comprising only 20 parts of glass powder, 20 parts of zinc oxide, 45 parts of feldspar, 10 parts of calcite, 4 parts of coloring agent A and 2 parts of coloring agent C in parts by weight. Glazing is applied to green bodies with an iron content of 8-12%.

[0049] 1) After weighing the raw materials according to the formula, pour the other raw materials into the ball mill tank except for zinc oxide. According to the material: ball: water = 1: 1.5: 1.1, quickly ball mill for 6 minutes, and the speed is 180-300r / min;

[0050] 2) Add the weighed zinc oxide to the ball-milled glaze in step 1), and continue ball milling for 2 minutes; after the end, pour out the glaze, pass it through an 80-mesh sieve, and set aside;

[0051] 3) The pottery is wiped clean with a sponge, and the surface of the pottery is dipped or sprayed once, and the thickness of the glaze layer is 1.0mm; only one glaze is required, no need to bury the crystal, the cry...

Embodiment 2

[0055] A crystalline glaze for pottery blanks, comprising only 30 parts of glass powder, 22 parts of zinc oxide, 35 parts of feldspar, 12 parts of calcite, 2 parts of coloring agent B and 2 parts of coloring agent D in parts by weight. Glaze is applied to terracotta blanks with an iron content of 10-12%.

[0056] 1) After weighing the raw materials according to the formula, pour the other raw materials into the ball mill tank except for zinc oxide. According to the material: ball: water = 1: 1.5: 1.1, quickly ball mill for 6 minutes, and the speed is 180-300r / min;

[0057] 2) Add the weighed zinc oxide to the ball-milled glaze in step 1), and continue ball milling for 2 minutes; after the end, pour out the glaze, pass it through an 80-mesh sieve, and set aside;

[0058] 3) The pottery is wiped clean with a sponge, and the surface of the pottery is dipped or sprayed once, with a thickness of 0.5mm; only one glaze is required, no need to bury the crystal, the crystal is natural,...

Embodiment 3

[0062] A crystalline glaze for pottery blanks, comprising only 20 parts of glass powder, 26 parts of zinc oxide, 45 parts of feldspar, 8 parts of calcite, 4 parts of coloring agent A and 2 parts of coloring agent B in parts by weight. Apply glaze to the purple sand body with an iron content of 8-15%, and fire it according to the following process:

[0063] 1) After weighing the raw materials according to the formula, pour the other raw materials into the ball mill tank except for zinc oxide. According to the material: ball: water = 1: 1.5: 1.1, quickly ball mill for 6 minutes, and the speed is 180-300r / min;

[0064] 2) Add the weighed zinc oxide to the ball-milled glaze in step 1), and continue ball milling for 2 minutes; after the end, pour out the glaze, pass it through an 80-mesh sieve, and set aside;

[0065] 3) The pottery is wiped clean with a sponge, and the surface of the pottery is glazed or sprayed once, and the thickness of the glaze layer is 1.5mm; only one glaze i...

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Abstract

The invention provides a ceramic blank crystalline glaze, and discloses a preparation process capable of treating at medium temperature. The ceramic blank crystalline glaze is prepared only by takingfour raw materials of glass powder, zinc oxide, potassium feldspar and calcite to be matched in proportion, glazing a ceramic blank with a high iron content and firing. Due to the abandonment of quartz and clay and combination of a slow cooling heat preservation firing system, long-range disorder and short-range order amorphous photonic crystal structures are easy to form in a glaze glass phase. The phases in the glaze layer generate a large amount of metastable micro-nano spherical particles and unstable spongy structures, and physical coloring is generated, so that the pottery embryo glaze surface presents a beautiful blue, purple or blue-purple double-color bottom glaze effect. Through selective enrichment, doping or substitution of colored ions in zinc silicate crystals, crystal flowers exhibit cyan and bright gold and other prominent effects. The ceramic blank crystalline glaze is fired at the highest firing temperature of 1200-1230 DEG C. The crystal flowers have obvious boundaries, and are radial inside, the diameter can reach 3-4 cm, and multi-color matching is extremely beautiful.

Description

technical field [0001] The invention relates to a medium-temperature crystalline glaze and a production process thereof, in particular to a pottery body crystalline glaze with composite effects of ion coloring and structural coloring and a preparation process thereof. Background technique [0002] The earliest crystalline glazed ceramic products were produced and applied in the Song Dynasty, such as the famous and precious colored glazes of Song Dynasty "tea powder", "rust flower", "eel yellow" and various "Tianmu, oil drop" tea bowls. But most of them belong to the iron-based microcrystalline glaze, that is, the obvious crystal flowers cannot be observed with the naked eye, but can be completely observed under the electron microscope. [0003] Crystalline glazes generally refer to ceramic glazes that can be observed with the naked eye, have complete crystal flowers, and obvious crystal shapes. They can be classified according to product use, silicate mineral type, crystalli...

Claims

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Application Information

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IPC IPC(8): C03C8/00C04B41/86
CPCC03C8/00C04B41/5022C04B41/86C04B41/4539C04B41/0072
Inventor 王超陈富强邵汉强王丹丹
Owner WUXI INST OF ARTS & TECH
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