Abstract
The study investigates the effects of a body that influences the nucleation and growth of crystal by experiment the application of zinc crystalline glaze to five of the most favorably used kinds of bodies sold in the market. As a result, in all bodies used in the test, willemite crystal is appeared on the surface and in the case of white porcelain, super white and white porcelain sculpture clay, beautiful crystals is developed. The reason that crystal does not grow and trickle down by sticking to the body in celadon clay and Sanchung clay is the large surface tension of glaze by ingredient CaO which is more often present compared to other bodies. In glaze, the ingredients $Al_2O_3$ and RO greatly influences the surface tension, and adhesion of the glaze and the body is completed by the glaze's power to stick, which is determined by the reaction of both the glaze and the body. However, in the case of Sanchung clay, the CaO in body reacts to the glaze, and glaze, on Sanchung clay, has tendency to run more compared with other bodies. It is supposed that this mechanism influences the growth of willemite crystal and the glaze's adhesion to the body.