Ceramic materials• Ceramic materials are generally composed of at least two

elements: one (or more) a metallic element and one non-one (or more) a metallic element and one non-metallicmetallic.

• Ex:1. Metal oxidesMetal oxides (Al2O3, FeO, etc.)• Ex:2. Compounds of carbides and nitridescarbides and nitrides

GLASSGLASS

The name " glass " is most often applied to silicate based materials that are non-crystalline solids,

Polymers.• Plastics," so-called because many of them are

deformable, are composed of polymers plus additives. • They include a variety of films, coatings, fibers,

adhesives, and foams.• Examples: polyvinyl chloride (PVC)• Polystyrene (foams used in coffee cups & packaging). • Polyacrylonitrile (used in textile fibers).• Polymethyl methacrylate (PMMA, or Plexiglas, used in

windows) • Teflon

Composite materials

Particulate compositeParticulate composite materials contain a large number of randomly oriented particles. Ex: ceramic particles dispersed in a metallic matrix.

Fiber-reinforced Fiber-reinforced compositescomposites are composed of strong and stiff brittle fibers which are incorporated into a softer, more ductile matrix.

Laminar composites are: Composed of layers of different materials, called laminates

BIOMATERIALS

• A biomaterial is any material, natural or man-made, that comprises whole or part of a living structure or biomedical device which performs, augments, or replaces a natural function.

SEMICONDUCTORS• A relatively small group of elements and

compounds has an important electrical property, semi-conduction , in which they are neither good electrical conductors nor good electrical insulators. Instead, their ability to conduct electricity is intermediate