JP2009196875A - Yo-hen patterned ceramic ware by decorating titanium dioxide and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing ceramic ware reproducible of yo-hen patterns in oxidative firing by designing the pattern through decoration of titanium dioxide. <P>SOLUTION: This method comprises the steps of preparing a yo-hen nucleation decorating agent, glazing a Temmoku glazed bowl with a basic glaze, drying, further applying the yo-hen nucleation decorating agent on the surface of the glaze, and firing to oxidize to generate a pattern with lustering nuclei on the periphery. In another embodiment, an alkali metal oxide is added to the basic glaze as a coloring auxiliary agent, and applying the yo-hen nucleation decorating agent containing titanium dioxide on the surface of the glaze to generate the pattern with lustering nuclei. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

Detailed Description of the Invention

  The present invention relates to a method for producing a cocoon decorated with a day variation pattern.

2. Description of the Related Art Conventionally, a method is known in which after applying glaze to unglazed baking and firing, reduction firing using silver and lead as a nucleating agent in order to develop a diurnal pattern. (Patent Document 1)
However, since lead is used as a nucleating agent, it is harmful to the human body, and because it is manufactured by reduction firing and double firing, the manufacturing method is complicated. Moreover, it becomes a problem in terms of energy saving.

  JP-A-2005-82438.

  The present invention eliminates the drawbacks of the conventional method for developing a diurnal pattern as described in Patent Document 1, is harmless to the human body without using lead, and is simple in manufacturing process, energy saving, and further, because it is fired once. An object of the present invention is to provide an industrially-manufactured ceramic having a day variation pattern and a method for manufacturing the same.

The above-mentioned problem is characterized in that a titanium dioxide aqueous solution as a decorating agent is attached to the glaze surface of a ceramic, and the sun-changing pattern including a luster is generated around the day-changing core decorating agent as a core. The problem is solved by the Yoh Kamon ceramics.
An alkali metal oxide may be added to the basic glaze as a coloring aid.
By adding a plurality of metal oxides as colorants to the basic glaze and decorating the surface of the glaze with titanium dioxide, it is also possible to obtain a vivid pattern-like ceramic that promotes color development.
It is possible to add manganese carbonate as a coloring additive to the basic glaze (basic glaze).
Furthermore, the problem is solved by the manufacturing method 2 of the day-changing celestial earthenware characterized by the formation of nuclei by decorating with titanium dioxide aqueous solution and the nucleation by oxidation firing and the bright coloration in the periphery.

It is also possible to manufacture day-variant ceramics by applying a glaze as a base, drying, attaching a core forming agent made of an aqueous titanium dioxide solution, and oxidizing and baking.
A production method in which the occurrence of day change can be ensured by a production method in which the firing temperature is maintained at 1260 to 1270 ° C. for a certain period of time and is oxidized and fired.

After applying a basic glaze and post-drying, titanium dioxide is mixed with water, an aqueous titanium dioxide solution is applied to the surface of the glazed surface, and a pattern can be drawn with a brush or sponge.
By changing the temperature to 1260 to 1270 ° C. by oxidation firing, holding it for 1 hour, and then allowing it to cool naturally (one-time firing only), the day variation pattern can be reproduced.

In the present invention, day-variant ceramics are produced in the process shown in FIG.
(Preparation for the formation of day-of-day nuclei)
The formation of nuclei and glow is greatly influenced by the ratio of titanium dioxide and water. Here, the ratio is applied to the glazed surface within a range of 1: 1.5 to 2.5 (titanium dioxide: water) (FIG. 2).
When the concentration of titanium dioxide is high, the core part remains in an insoluble state, whereas when the concentration is low, the glow and the core are thinned.

By using Kurohama as the raw material of ferric oxide (Fe ₂ O ₃ ), which is the basis of the Hyoten Tenmoku, the Hyohen pattern was revealed. When the reagent ferric oxide, Bengala was used, the glow and nucleus were brown and the glow was brown.

Manganese carbonate was used as a coloring aid.
Developed a day change that added chromium oxide, cobalt, and titanium metal oxides as a bright colorant to black raster-like candy with ferric oxide (Kurohama) and manganese carbonate added.
The reason why manganese carbonate or the like is added to the black raster-like soot is to generate a pattern of a bright nucleus by coloring and oxidizing and firing each metal oxide.

The following glazes were also prepared:
Seegel formula
8% ferric oxide (using Kurohama as raw material) and 6% manganese carbonate are added to the basic rice cake (Figure 2), and the metal oxides cobalt oxide, chromium oxide, and titanium oxide are added to it. 1% of each metal oxide was added in an external ratio.
Regarding the addition amount of the metal oxide, the total addition amount of chromium, cobalt, and titanium is best within 3%, and 1.5% and 5.0% are poor in coloring (FIG. 3).

  There was a color change with the use of other metal oxides. The color changes by changing the oxide. As an example, there is a case where cupric oxide and chromium are replaced.

The above glaze was applied to an unglazed tea bowl with a porcelain base, and then a titanium dioxide aqueous decorating agent was applied to the surface of the well-dried bowl and baked.
(Baking process)

Conditions for oxidizing and firing in an electric furnace rise to 500 ° C. in 1 hour, rise to 1260 to 1270 ° C. in 6 hours and 30 minutes, hold for 1 hour, and then naturally cool. Therefore, the firing time is 8 hours 30 minutes.
As for the state of the luminescent nucleus fired at a firing temperature of 1270 ° C. or higher, the nucleus is in an oversoluble state.
The state of the luminescent nucleus fired at a firing temperature of 1240 ° C. or lower becomes insoluble.
When firing at a firing temperature of 1250 degrees, the core becomes soluble when the holding time at 1250 degrees is set to 2 to 3 hours.
FIG. 5 shows the relationship between the firing temperature and the holding time.

  The figure which shows the transmutation pottery manufacturing process like this invention.     The figure which shows the ratio of the glaze preparation used for this invention.   The figure which shows the result of the experiment example of the iris coloring by this invention.   The figure which shows the decorating agent used for this invention.   The figure which shows the heat curve of the oxidation baking by this invention.   A photograph of a decorated Tenmoku bowl obtained by this invention.

Explanation of symbols

1: Porcelain body 2: Day change pattern obtained by decoration

Claims (7)

  A sun-shaped porcelain that is decorated with a titanium dioxide aqueous solution as a decorating agent on the surface of the ceramic glaze, and that produces a sun-changing pattern that includes a luster around the center of the day-changing core decorating agent.   2. A day-shaped porcelain ceramic according to claim 1, wherein an alkali metal oxide is added as a coloring aid to the basic glaze.   3. A day-shaped porcelain ceramic according to claim 1, wherein a plurality of metal oxides are added as coloring agents to the basic glaze and titanium dioxide is decorated on the surface of the glaze.   4. A day-shaped porcelain ceramic according to claim 1, wherein manganese carbonate is added as a coloring additive to a basic glaze (basic glaze).   A method for producing day-variant ceramics, characterized by the formation of nuclei by decorating with aqueous titanium dioxide and the coloring of the nuclei by oxidation firing and the surrounding areas.   A method for producing a day-variant ceramic, characterized in that a basic glaze is applied, dried, a core forming agent comprising a titanium dioxide aqueous solution is attached, and oxidation firing is performed.   The method for producing a day-variant ceramic according to any one of claims 5 to 6, wherein the firing temperature is maintained at 1260 to 1270 ° C for a certain period of time, followed by oxidation firing.