In-glaze decoration method for bright red glazed ceramic

Abstract

The invention discloses a method for in-glaze decoration of bright red glazed ceramics. The method comprises the following steps: (1) the inclusion high-temperature bright red glazed ceramics which is calcined at the temperature of 1100-1300 DEG C is selected as a colored glaze billet; (2) ceramic pigment powder is added with transparent basic glaze powder which accounts for 5-50% of the total mass to prepare the pigment powder, then the pigment powder is prepared into a pasty pigment by the mixture which consists of 70% of frankincense oil and 30% of camphor oil by mass proportions; (3) the pigment obtained in the step (2) is used for colored drawing on the colored glaze billet or printing a stained paper for sticking the paper on the colored glaze billet so as to produce a colored drawing semi-finished product; (4) the colored drawing semi-finished product obtained in the step (3) is dried naturally and put into a furnace, and then calcined at the temperature of 1050-1250 DEG C to obtain a finished product. The in-glazed method has the advantages that the decorative pigment is thoroughly included by the glaze, and the surface is glossy and smooth; the wear resistance is greatly improved compared with the over-glaze decoration as the decorative part is completely glazed, and the lead release is greatly decreased.

Description

technical field [0001] The invention belongs to a ceramic glaze painting method, in particular to an in-glaze painting method for red glazed porcelain. Background technique [0002] In the history of China, a variety of ceramic pigments similar to red have been developed, such as orange-red iron red, purple-red manganese red, sauce-red copper red, etc., but the real bright red pigments are currently only artificially synthesized in modern times. In recent years, researchers and manufacturers have done a lot of work on the application of cadmium selenide red in ceramic production. [0003] Selenium cadmium red is a pink solid when it is synthesized. If it is combined with an appropriate basic glaze, it can become a bright red glaze after being fired above 600°C, but its thermal stability is not good, and it will start to decompose above 600°C. There is a big difference in the glaze forming temperature above 1000°C that is usually required. For many years, production and res...

AI Technical Summary

Problems solved by technology

[0007] First, because the bright red glaze contains sulfur and selenium that are active at high temperatures, it is easy to chemically react with other pigments infiltrated on the glaze in the high temperature area above 1000 ° C, and the expected color cannot be obtained. It will cause defects such as wrinkles and pores on the glaze surface

[0008] The second is physical factors. Since the red glaze is a colored glaze, other pigments will inevitably mix and cover each other to a certain extent after sinking into it, resulting in color shifting.