This is mainly a structural ceramic , often used for kiln furniture due to its extremely good thermal shock resistance. Like other structural ceramic materials, it also has good thermal and electrical insulating capabilities. Its good thermal shock properties lend this material to be used in refractory applications. Its low thermal expansion and thermal conductivity make it a good choice for fixtures and other applications.
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Often used as a structural ceramic for kiln furniture applications, it also finds uses in other applications where rapid . In the ceramic industry, cordierite is a man-made refractory crystalline material having extremely low thermal expansion. Vacuum Chucks, Integrated Mirrors for Stages, Stage Parts. Transportation parts with high purity and excellent chemical resistance.
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Experiments have shown that the raw materials and firing process can have a tremendous influence on the formation of cordierite in MgO-Al2O3-SiOceramic bodies. Catalytic converters are commonly made from ceramics containing a large proportion of synthetic cordierite. The manufacturing process deliberately aligns the cordierite crystals to make use of the very low thermal expansion along one axis. This prevents thermal shock cracking from taking place when the catalytic converter . It is use for example, as a carrier for catalysts in the automotive industry.
During the production of this ceramic, various raw materials are ground and mixed to form a green body. Kontext von „ cordierite ceramic substrate“ in Englisch-Deutsch von Reverso Context: Sintering process of conductors made of copper or copper- based alloys and of their cordierite ceramic substrate. AlOOH and talc, clays and feldspar, to determine the influence of the alumina particle size on the microstructure, coefficient of thermal expansion (CTE ) and flexural strength (FS) of the ceramics. Property, Units, Test. Crystal Size, average, Microns, ASTM-E112.
Water Absorption, , ASTM-373. Cordierite (2MgO−2Al2O3− 5SiO2) is currently an attractive ceramic material for various applications. This study describes the production of cordierite ceramic by mixing Moroccan abundant raw materials: andalusite (source of Al2Oand SiO2) and “Ghassoul” clay (source of MgO and SiO2).
The clay consists mainly of . Finntalc is often used in automotive exhaust catalytic converters. These contain honeycomb cordierite ceramic bodies.
The active catalyst, usually a platinum compoun uses the ceramic body as a substrate. Manufacturing of cordierite honeycomb structures aims for high porosity (surface area) yet mechanical strength of . La-doped cordierite ceramic. The fundamental mechanism to control the thermal expansion properties including the . In addition, these monoliths offered a high geometric surface area . Glass- ceramics with high fracture toughness due to enstatite (MgSiO3) are described in Section 2. It is possible to add some enstatite to cordierite glass- ceramics by increasing magnesia while lowering alumina.
DEVELOPMENT OF CORDIERITE BODIES WITH SIERRALITE,. Several cordierite ceramic bodies exhibiting exceptionally low coefficients of thermal expansion and good thermal-shock resistance have been developed. Firing ranges, coef- ficients of thermal . Moreover, also at temperatures close to the melting point, the orthorhombic pseudohexagonal symmetry of cordierite gives way to a hexagonal symmetry. Although the hexagonal phase has only a short range of stability, it nevertheless occurs frequently, but metastably, in glass ceramics which have been devitrified at lower . However, almost all glass ceramics developed so far are based on silicate glass compositions, such as the Li2O-Al2Oi-SiO(LAS) and MgO-AO,-SiO(MAS) systems.
Cordierite is used when thermal shock is a concern in the finished product.