Property Shared Between Glass And Ceramics

Glass can be called as a type of ceramic.

Property shared between glass and ceramics.

Glass ceramics are made of small grains surrounded by a glassy phase and have properties in between those of glass and ceramics. Glass ceramic materials share many properties with both glasses and ceramics glass ceramics have an amorphous phase and one or more crystalline phases and are produced by a so called controlled crystallization in contrast to a spontaneous crystallization which is usually not wanted in. A well known example of a glass ceramic is the ceramic cooker hob which has been developed to have a thermal expansion coefficient close to zero. This treatment results in a controlled nucleation and crystallisation of the glass.

Glass ceramics are polycrystalline materials produced through controlled crystallization of base glass. The glass partially crystallises. In the manufacture of both glass and ceramics there is a slight difference. Ceramics may be crystalline or partly crystalline.

In these experiments 2 g of grained samples with particle size between 0 3 and 0 5 mm were treated at 373 k for 2 h in 70 ml solutions. Amorphous structure means that atoms are not organized according to a well ordered repeating arrangement as in crystals. Glass is known to be non crystalline. Most commonly they are manufactured in a process in which a pre manufactured glass is subjected to a specific heat treatment.

80 83 85 in order to prevent coating cracking due to the thermal coefficient mismatch between the glass coating and the ceramic. We use a vast range of ceramic materials in the day to day life. Usually they are metal oxides that is compounds of metallic elements and oxygen but many ceramics. Materials that are initially fabricated as glasses and perhaps shaped using glass moulding techniques and converted to a ceramic to enhance their properties are called glass ceramics.

Enameling was used to coat zirconia and alumina with bioactive phosphosilicate glass and glass ceramics ap40 and rkkp with composition in the system sio 2 β ca 3 po 4 2 cao na 2 o k 2 o mgo caf 2. Glass ceramics combine the properties of glasses with the benefits of conventional sintered ceramics. Industrial ceramics are commonly understood to be all industrially used materials that are inorganic nonmetallic solids. A glass kiln will have heating elements on the top whereas a ceramic kiln will have heating elements on the sides.

The key difference between glass and ceramic is that ceramics have crystalline or semi crystalline or non crystalline atomic structure whereas the atomic structure of glass is non crystalline. Ceramics and glass have many applications that require qualities such as hardness rigidity high resistance to heat corrosion etc.