Shaped products from refractory ceramics
Cordierite ceramics are used in high-temperature industrial and laboratory furnaces as lining and hearth plates, for heater holders, heater outputs insulators and thermocouple inputs, etc. at temperatures up to 1300 °C.
The manufacture of cordierite ceramics is carried out by slip casting.
A distinctive feature of cordierite ceramics is that its coefficient of thermal expansion is several times lower than that of common oxide, high-alumina, and other types of ceramics.
Cordierite ceramics tolerate abrupt temperature changes and is a very heat-resistant material, have satisfactory resistance to the action of technological atmospheres, and do not interact with heaters made of high-resistance alloys (nichrome, kanthal) in the operating temperature range.
|1.||Apparent density, g/cm3, not less than||1,95 - 2,3|
|2.||Ultimate compressive strength, MPa, not less than||20 - 25|
|3.||Open porosity, no more||28|
|4.||Thermal resistance (for samples) by the number of heat cycles, more||50|