Ceramics can be defined as heat-resistant, nonmetallic, inorganic solids that are (generally) made up of compounds formed from metallic and nonmetallic elements.Traditional ceramics are used in dishes, crockery, flowerpots, and roof and wall tiles.
The art of making clay pottery is as old as human civilization. This age-old tradition of making clay pottery still exists in our societies. It still possesses strong socio-cultural values in our livelihood. Despite of all influences of modernization and development, the potters of Kathmandu Valley still find their livelihood on their potter’s wheels.
The general properties of ceramic material present the following advantages: High wear, heat, pressure, and chemical attack resistance (gas and liquids) Extreme hardness. Excellent electrical insulation. The bonding of atoms together is much stronger in covalent and ionic bonding than in metallic. That is why, generally speaking, metals are ductile and ceramics are brittle. Due to ceramic materials wide range of properties, they are used for a multitude of applications.
A coaster, drink coaster, beverage coaster, or beer mat is an item use to rest drinks upon. Coasters protect the surface of a table or any other surface where the user might place a drink.