Ceramics Giant Molecular Structure

Ceramic composition and properties atomic and molecular nature of ceramic materials and their resulting characteristics and performance in industrial applications.

Ceramics giant molecular structure.

Usually they are metal oxides that is compounds of metallic elements and oxygen but many ceramics. The bonding of atoms together is much stronger in covalent and ionic bonding than in metallic. Metals also have a giant chemical structure whether the metal is pure or an alloy. Nonconductivity arises from the lack of free electrons such as those found in metals.

Contains a huge number of atoms or ions arranged in a particular way but the number of particles is not fixed the ratio might be fixed but not in all cases. A ceramic is an inorganic non metallic solid which is prepared by heating a substance or mixture of substances to a high temperature. Giant structure occurs in ionic and covalent compounds. Most ceramics are made up of two or more elements.

The table below provides a summary of the main properties of ceramics and glass. Industrial ceramics are commonly understood to be all industrially used materials that are inorganic nonmetallic solids. Ordinarily ceramics are poor conductors of electricity and therefore make excellent insulators. Glass ceramics are made of small grains surrounded by a glassy phase and have properties in between those of glass and ceramics.

The two most common chemical bonds for ceramic materials are covalent and ionic. This is called a compound. Ceramics often contain silicon dioxide magnesium oxide and aluminium this gives ceramics their giant covalent or ionic structures. Amorphous structure means that atoms are not organized according to a well ordered repeating arrangement as in crystals.

For example alumina al2o3 is a compound made up of aluminum atoms and oxygen atoms.