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What is wear resistant ceramic and features

2016/07/21

Wear resistant ceramic is kind of special corundum made of alumina added with other rare metallic reagents, sintered in 1700 Degree centigrade. Wear ceramic liners are series of wear resistant ceramic products including ceramic tile, ceramic rubber liner, ceramic rubber steel plate. Different solutions will be applied according to different working conditions in terms of wear, abrasion, impact, corrosion, chemical, heat and other factors. The ceramic are featured and advanced in following aspects:


High hardness
Rockwell hardness of alumina ceramic are HRA80~90, which means it’s the secondary hardest materials in the world only next to diamond, much higher than other wear resistant steel plate. 
Supper wear resistance
Ceramic is 266 times higher on wear resistance than manganese steel; 171 times higher than high chrome casts. In many applications, the equipment service life is 10 times prolonged installed with ceramic lining.
Less weight
Ceramic’s density is 3.5g/cm3, only half of steel’s. So the weight loss on equipment is remarkably.
Tightly bonding and good heating resistance
Ceramic tiles are always bonded on the equipment surface by epoxy glue, which can work well in the temperature less than 250 Degree centigrade.
Chemical resistant
Ceramic is kind of materials that can well withstand the corrosion from chemicals such as strong acid or alkali. So it’s a ideal wear material to be used in the corrosive conditions that metal materials can not work.


Specifications of alumina ceramic.

Content of alumina: 92%, 95%, 98%, 99% or higher.
Density: ≥3.5 g/cm3
Rockwell hardness: ≥80 HRA
Compressive strength: ≥2200 Mpa
Fracture toughness,KIC: ≥4.8MPa•m1/2
Bending strength: ≥290MPa
Thermal conductivity: 20W/m.K
Coefficient of thermal expansion: 7.2×10-6m/m.K