#|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z Index  

Vitrification - short version

During firing of a ceramic body, the formation of a liquid phase that upon cooling becomes a glass-bonding matrix.

Vitrification - long version

Vitrification (from Latin vitreum, "glass" via French vitrifier) is the transformation of a substance into a glass. Usually, it is achieved by rapidly cooling a liquid through the glass transition. Certain chemical reactions also result in glasses. An important application is the vitrification of an antifreeze-like liquid in cryopreservation.

Vitrification is characteristic for amorphous materials or disordered systems and occurs when bonding between elementary particles (atoms, molecules, forming blocks) becomes higher than a certain threshold value. Thermal fluctuations break the bonds therefore the lower the temperature the higher the degree of connectivity. Because of that amorphous materials have a characteristic threshold temperature termed glass transition temperature (Tg): below Tg amorphous materials are glassy whereas above Tg they are molten.

In a wider sense, the embedding of material in a glassy matrix is also called vitrification. An important application is the vitrification of radioactive waste to obtain a stable compound that is suitable for ultimate disposal.


IQ Catch Banner


Definition in Russian| Definition in French| Definition in Japanese| Definition in Vietnamese| Definition in Greek| Definition in Polish| Definition in Turkish| Definition in Portuguese| Definition in Hindi| Definition in Swedish| Definition in Arabic| Definition in Chinese| Definition in Dutch| Definition in Hebrew| Definition in German| Definition in Korean| Definition in Italian| Definition in Spanish| Definition in Thai|