Is it harmful to glaze the bowl?

Glaze is a colorless or colored glassy thin layer covering the surface of ceramic products. It is made of feldspar, quartz, talc, kaolin and other mineral raw materials by grinding in a certain proportion, coating on the surface of the blank and calcining at a certain temperature. It can increase the mechanical strength, thermal stability and dielectric strength of products, and has the characteristics of beautifying objects, being convenient to wipe and wash, and not being eroded by dust.

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Glaze is a continuous glassy layer attached to the surface of ceramic body, or a mixed layer of glass body and crystal. Glaze may be made of calcium-containing stones and charcoal ash used in ancient stone cooking, or it may be consciously made of shell powder inspired by the beautiful texture on the shell surface.

Generally, the thickness of the blank glaze is 0. 1 cm, but after firing in the kiln, it adheres closely to the porcelain body, making the porcelain dense, soft in luster, impermeable to water and gas, and giving people the feeling of being as bright as a mirror. At the same time, it can improve the use strength and chemical stability, and play a role in preventing pollution, facilitating cleaning and reducing corrosion.

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