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Ceramics have a wide range of applications in daily life, including daily ceramics, sanitary ceramics, architectural ceramics, electrical ceramics, electronic ceramics, chemical ceramics, textile ceramics, and more. In industry, there are also wear-resistant ceramics. What is the difference between industrial wear-resistant ceramics and ordinary ceramics in daily life?
In terms of raw materials, we have broken through the traditional ceramic limits, where clay is the main component. Wear-resistant ceramics generally use oxides, nitrides, borides, carbides, and other compounds as the main raw materials.
In terms of composition, the composition of traditional ceramics is determined by the composition of clay, so ceramics from different regions and kilns have different textures. Since the raw materials for wear-resistant ceramics are purified compounds, their properties depend on the artificial ratio of the materials' purity and process rather than the origin.
In terms of preparation technology, we have broken through the traditional ceramic limitations that mainly rely on kilns for production and widely adopted methods such as vacuum sintering, protective atmosphere sintering, hot pressing, and hot isostatic pressing.
In terms of performance, special ceramics have different special properties and functions, such as high strength, high hardness, corrosion resistance, conductivity, insulation, and special functions in magnetic, electric, optical, acoustic, biotechnology, etc., making them widely used in high-temperature, mechanical, electronic, aerospace, medical engineering, etc.
Wear-resistant ceramics are a special kind of corundum ceramics with AL2O3 as the main raw material and rare metal oxides as additives. They are produced by high-temperature firing at 1,700 degrees Celsius, then combined with special rubber and high-strength organic/inorganic adhesives to form products.
Its Rockwell hardness is HRA80-90, second only to diamond, far exceeding the wear resistance of wear-resistant steel and stainless steel.
2、Extremely good wear resistance
According to tests by the Powder Metallurgy Research Institute of Central South University, its wear resistance is equivalent to 266 times that of manganese steel and 171.5 times that of high-chromium cast iron. Under the same working conditions, it can extend equipment life by at least ten times.
Its density is 3.6-3.9g/cm3, only half that of steel, which can greatly reduce equipment load.
4、Strong bonding and good heat resistance
Therefore, compared with ordinary ceramics in daily life, wear-resistant ceramics have better performance.