Glassy structure which is formed by grinding ceramic raw materials and covering with a thin layer on ceramic body is called glaze.
There are two main goals to apply glaze on the ceramic products. The first one is to cover on the ceramic body in order to reach smooth surface and prevent from water permeability with the help of glassy in order to have more hygienic, more clearable and more durable to chemical reaction. The second one is to enhance esthetics of products with help of different effect and patterns.
Artistic glazes are generally preferred of special glazes that are mostly used. Crystalline glaze is the one of the artistic glazes. Crystalline glazes are a special kind of glaze. These glazes that are not used for industrial purposes but used for decorative and artistic purposes.
Crystalline glazes are not frequently on the market and not seen as industrial because of difficult production process and lower of technological properties. Therefore, Crystalline glazes are an attractive product range for customers who look for unique and artistic on the market.
Crystalline bundles are consist of micro and macro into glass matrix and on glass matrix surface for crystaline glazes. The cooling must have long period in order to have view of crystalline. Crystalline nucleus that form view of bundles are accumulated on the melted glaze surface, provided that the cooling period becomes longer. Crystalline glazes give better results when the glazes are applied to vertical products.
Viscosity of glaze affects formation of crystalline bundles and crystalline bundles length. ZnO, TiO2 and Fe2O3 oxide provide formation of crystalline and increase the size of crystalline. Refractory materials such as Al2O3 increase the viscosity of the glaze that make crystalline formation difficult and reduce cyrstalline size.
Anahtar Kelimeler: Crystalline Glaze, Zinc Oxide, Titanium dioxide, Iron Oxide, Aluminium Oxide
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