Jun Porcelain Coloring Of The Physical Model And Its Application

By analyzing microstructure and components of ancient Jun glazes, a physical model has been proposed based on research productionon about Jun ware on hand at home and abroad. The coloring of Jun glaze is the result of a series of factors, such as the absorption of coloring ions, scattering of minute bubbles and phase separating drops as well as reflection of crystals and bubbles. The light reacts with Jun glaze in a way that the light is reflected by the interface of air and glaze without coloring effect, and then goes through the glaze with three influences which are the dispersion of minute bubbles and phase splitting drops, the absorption of coloring ions, and the reflection of big asymmetry structure. The former two influenced the color, while the last one change the color's saturation, and the dispersion and absorb change the direction of the light which has been effected, and let them go out of the glaze and the else light arrive at the interface of glaze and body witch reflect them, then go back to the air, but this part of the light is quite weak. The light that returns to the air makes the eyes sense the color. The scattering of minute bubbles and phase splitting drops in Jun ware were computed respectively with Mie scattering and Rayleigh scattering in order to compare the difference of two methods by which generate mechanism of Jun ware was analyzed. The result shows the scattering of bubbles is far and away stronger than that of phase splitting drops for unit particle. The scattering of both bubbles and splitting phase drops are anisotropic, and wavelength is shorter, scatter is stronger. The variation of the selection of shortwave with the particle radius was different. That of minute bubbles is monotonic, whereas there is peak for the case of phase splitting drop. A formulation of Jun glaze has bee proposed to count out the reflection spectrum of the Jun glaze by the components and the parameters of the structure. By using climb model and computer simulation, a method of reverse calculation has been proposed which can count out the proportions of coloring ions between different valence and the situation of dispersion and reflection. A series of blue ancient Jun ware have been analyzed by this method and found that the most of the Fe ion is Fe²⁺ which is one reason of the blue of this series. There are two kinds of reflection spectrum in these Jun wares, which are pale blue class and shamrock class and concentration of Ti³⁺ is thanked for this. The colors of pale blue and azure are differentiated by color saturation. Such difference is due to pale blue glaze has much more nonuniformity such as crystallization and big bubbles.