Investigation of Calcium Oxide (CaO) Effects in Crackle Stoneware Glazes

Abstract

Crackle glazes for use on ceramic bodies are well-known in the ceramic art and may be defined as glazes whose tendency to craze is used for decorative effect. One of the important steps to understanding glazes and glazing is to have a good grasp of the properties the materials you are using and how they affect the glaze properties. The final properties of the glaze can be managed and evaluated by focusing on the oxide effects of the fired glaze. Calcium Oxide (CaO) is the

Utilization of seashells in matte glaze preparation

“…Also, CaO gives hardness and durability to ceramic glazes. 7,8 The two prominent features in the identification of glazes are the texture and color. Ceramic glazes give an effect to the finished ceramic products are; Transparent, Matte, Semi-matte, Opaque, Satin, Shinning, Colored, Aventurine, Metallic Lustre Glazes, etc Matte glaze is a highly preferred glaze due to their matt appearance and these types can be defined as glazes which generally cover the surface of the ceramic product and enhance the quality of the product.…”

“…It makes the glaze less viscous and it has a low coefficient of thermal expansion that minimizes cracking. Also, CaO gives hardness and durability to ceramic glazes 7,8 …”

“…Also, CaO gives hardness and durability to ceramic glazes. 7,8 The two prominent features in the identification of glazes are the texture and color. Ceramic glazes give an effect to the finished ceramic products are;…”