Ceramics Ceramics are objects that are made from materials which are permanently changed when heated. The changes are on the molecular level, and can also changes the physical characteristics of the object. The most popular material used when creating ceramics is clay. Other materials may be used when creating ceramics, materials like porcelain. Terms &Definitions/ Tools &Materials Bisque - Pottery which has been fired once, without glaze. Bone Dry - Completely air dried. Coil - A piece of clay rolled like a rope, used in making pottery. Glaze - A thin coating of glass. This will be our final coating to our clay vessels. Glazes are brushed on to bisque and then re-fired in the kiln. Kiln - A furnace of refractory clay bricks for firing pottery and for fusing glass. Leather Hard - Stage of the clay between plastic and bone dry. Clay is still damp enough to join it to other pieces using slip. Plasticity - The quality of clay which allows it to be manipulated into different shapes without cracking or breaking. Slab - Pressed or rolled flat sections of clay used in hand building. Slip - Clay mixed with water with a mayonnaise consistency. Popular uses for Ceramics: Aerospace: space shuttle tiles, thermal barriers, high temperature glass windows Consumer Uses: glassware, windows, pottery, dinnerware, ceramic tiles Military: structural components for ground, air and naval vehicles, missiles, sensors Computers: insulators, resistors, superconductors, capacitors Other Industries: bricks, cement Communications: fiber optic/laser communications, TV and radio components, mic2727rophones