Since the Song Dynasty, the microcrystalline iron crystal glaze was fired. At the end of the last century, the Siegel Pottery Institute and the Copenhagen Pottery Institute burned zinc crystal glaze and the Berlin State Ceramics Institute burned titanium crystal glaze. A substantial breakthrough has emerged. It can be said that the development path of crystal glaze technology has not been fully expanded.
In order to open up the crystal glaze technology, it is not possible to study only the crystal glaze as an isolated object. Crystal glaze is also based on ceramic glaze, so extensive research on the technology of ordinary ceramics is required. It is necessary to study the mechanism of forming porcelain, the preparation of glaze, the method of firing and its control.
Secondly, the precipitation of crystals in the crystal glaze is similar to the igneous crystals crystallized from the magma. Therefore, crystalline petrology research is also very practical work. Such as: crystal growth theory, crystal morphology theory.
Thirdly, as a crystal glaze, not only the crystal flowers of various poses, but also the colorful tones of the crystals are set off. Therefore, the color problem of the crystals is also a very significant subject. Nickel can make the zinc-zinc ore crystals blue, which once attracted people's concern. If it is possible to obtain a predetermined color according to the formulation, the process conditions, the type of the crystal mineral, the morphology of the crystal flower, or according to the crystal mineral, the crystal flower form, or the addition of a certain metal salt or oxide, or according to the formula The predetermined crystallization and color tone can be achieved with the established process route, which are issues worth exploring.
From the artistic point of view, crystal glaze can not be achieved by artificial painting. Once it is successfully fired, it does not need to be decorated, colored, and lead-free. Although the crystal glaze has been developed into commercial production, it still stays in the circle of process display ceramics. The main reasons are: the crystal glaze has a mature temperature, a narrow crystallization temperature range, low temperature viscosity, and easy flow glaze. The yield is low.
In order to improve the yield, the crystal glaze can be industrialized as other glazes, and the problems to be solved are: (1) expanding the mature temperature range of the crystal glaze; (2) selecting and determining a suitable crystallization temperature range; (3) Choosing a suitable holding temperature, which is beneficial to the growth of the crystal, and does not produce flow glaze as much as possible; (4) determining the shape, positioning and color of the crystal flower; (5) researching a new crystal glaze system; 6) Improve the production process of crystal glaze.
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