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- Glass-ceramic abstract "Glass-ceramics are polycrystalline materials produced through controlled crystallization of base glass. 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 glass manufacturing. Glass-ceramics have the fabrication advantage of glass as well as special properties of ceramics. Glass-ceramics usually have between 30% [m/m] to 90% [m/m] crystallinity and yield an array of materials with interesting properties like zero porosity, high strength, toughness, translucency or opacity, pigmentation, opalescence, low or even negative thermal expansion, high temperature stability, fluorescence, machinability, ferromagnetism, resorbability or high chemical durability, biocompatibility, bio-activity, ion conductivity, superconductivity, isolation capabilities, low dielectric constant and loss, high resistivity and break down voltage. These properties can be tailored by controlling the base glass composition and by controlled heat treatment/crystallization of base glass.Glass-ceramics are mostly produced in two steps: First, a glass is formed by a glass manufacturing process. The glass is cooled down and is then reheated in a second step. In this heat treatment the glass partly crystallizes. In most cases nucleation agents are added to the base composition of the glass-ceramic. These nucleation agents aid and control the crystallization process. Because there is usually no pressing and sintering, glass-ceramics have, unlike sintered ceramics, no pores.A wide variety of glass-ceramic systems exists, e.g., the Li2O x Al2O3 x nSiO2-System (LAS-System), the MgO x Al2O3 x nSiO2-System (MAS-System), the ZnO x Al2O3 x nSiO2-System (ZAS-System).".
- Glass-ceramic thumbnail Glass_ceramic_cooktop.jpg?width=300.
- Glass-ceramic wikiPageExternalLink www.eurokera.com.
- Glass-ceramic wikiPageExternalLink EN.
- Glass-ceramic wikiPageExternalLink index.html.
- Glass-ceramic wikiPageExternalLink Glass-Framing-Products.aspx.
- Glass-ceramic wikiPageID "251061".
- Glass-ceramic wikiPageRevisionID "574428399".
- Glass-ceramic hasPhotoCollection Glass-ceramic.
- Glass-ceramic subject Category:Ceramic_materials.
- Glass-ceramic subject Category:German_inventions.
- Glass-ceramic subject Category:Glass-ceramics.
- Glass-ceramic subject Category:Glass_chemistry.
- Glass-ceramic subject Category:Glass_engineering_and_science.
- Glass-ceramic type Abstraction100002137.
- Glass-ceramic type CeramicMaterials.
- Glass-ceramic type Material114580897.
- Glass-ceramic type Matter100020827.
- Glass-ceramic type Part113809207.
- Glass-ceramic type PhysicalEntity100001930.
- Glass-ceramic type Relation100031921.
- Glass-ceramic type Substance100019613.
- Glass-ceramic comment "Glass-ceramics are polycrystalline materials produced through controlled crystallization of base glass. 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 glass manufacturing.".
- Glass-ceramic label "Glaskeramik".
- Glass-ceramic label "Glass-ceramic".
- Glass-ceramic label "Tworzywo szklano-ceramiczne".
- Glass-ceramic label "Vetroceramica".
- Glass-ceramic label "Vitrocerâmica".
- Glass-ceramic label "Vitrocéramique".
- Glass-ceramic label "Ситаллы".
- Glass-ceramic label "玻璃陶瓷".
- Glass-ceramic label "結晶化ガラス".
- Glass-ceramic sameAs Glaskeramik.
- Glass-ceramic sameAs Vitrocéramique.
- Glass-ceramic sameAs Vetroceramica.
- Glass-ceramic sameAs 結晶化ガラス.
- Glass-ceramic sameAs Tworzywo_szklano-ceramiczne.
- Glass-ceramic sameAs Vitrocerâmica.
- Glass-ceramic sameAs m.01l800.
- Glass-ceramic sameAs Q13078381.
- Glass-ceramic sameAs Q13078381.
- Glass-ceramic sameAs Glass-ceramic.
- Glass-ceramic wasDerivedFrom Glass-ceramic?oldid=574428399.
- Glass-ceramic depiction Glass_ceramic_cooktop.jpg.
- Glass-ceramic isPrimaryTopicOf Glass-ceramic.