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Glass kiln ceramics
Glass ceramics are polycrystalline materials produced by controlled crystallization of basic glass. Glass ceramic materials have many characteristics with glass and ceramics.
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Keyword: Ceramics 丨 Clay Pipe Series
Description
Glass ceramics are polycrystalline materials produced by controlled crystallization of basic glass. Glass ceramic materials have many characteristics with glass and ceramics. Glass ceramics have an amorphous phase and one or more crystalline phases, and, contrary to spontaneous crystallization, they are produced by so-called "controlled crystallization", which is usually undesirable in glass manufacturing. Glass ceramics have the manufacturing advantages of glass and the special properties of ceramics. When used for sealing, some glass ceramics do not need brazing, but can withstand brazing temperatures up to 700 ° C. Glass ceramics usually have a crystallinity of 30% [m/m] to 90% [m/m], and produce a series of materials with interesting characteristics, such as zero porosity, high strength, toughness, translucent or opaque, pigmentation, opalescence, low or even negative thermal expansion, high temperature stability, fluorescence, processability, ferromagnetism, absorbability or high chemical durability, biocompatibility, biological activity, ionic conductivity, superconductivity Isolation capability, low dielectric constant and loss, high resistivity and breakdown voltage. These properties can be customized by controlling the composition of the base glass and controlling the heat treatment/crystallization of the base glass. In manufacturing, the glass ceramics have the strength of ceramics, but have the air tightness of glass.
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