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Advantages and disadvantages of Alumina Ceramics

Release time: 2018-05-17

Advantages and disadvantages of Industrial Ceramics/ Alumina Ceramics


1. Rockwell hardness of alumina ceramics, measured by Shanghai Silicate Research of Institute of CAS(Chinese Academy of Sciences), is HRA80-90. Its hardness ranks second after diamond and far exceeds the wear resistance of wear-resistant steel and stainless steel.


2. The wear resistance of alumina ceramics, measured by Institute of Powder Metallurgy of Central South University, is 266 times that of manganese steel and 171.5 times that of high chromium cast iron. According to our customer investigation in the past ten years, lifetime of equipment extends more than 10 times than before by means of alumina ceramics.


3. The density of alumina ceramic is only half that of steel, which can greatly reduce the equipment load.


4. The property of high temperature resistance ensures alumina ceramics to be used at 1600 for a long time.


5. Corrosion resistance of alumina ceramics is very strong.


6.Good electrical insulation performance, especially at high temperature, make sure per millimeter thickness of alumina ceramic able to withstand more than 8,000 voltage.


7. Alumina ceramic has low toughness and poor thermal shock resistance, and can not withstand sharp changes in temperature. ( Disadvantages)

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