Ceramic screws are a kind of special ceramic product prepared by zirconia, alumina, silicon nitride, and other ceramic powders, so do you know what physical and chemical properties ceramic screw have?
Physical properties
(1)High and low-temperature characteristics
Ceramic screws in a high-temperature environment (800 degrees Celsius) do not deformation, ductility, will not reduce the strength of the connection. The -70 degrees Celsius temperature can still maintain good connection strength.
2)Insulation characteristics
Zirconia ceramic screws can maintain good insulation at room temperature. Room temperature resistivity 10, and in the air heated to a certain temperature range (800 degrees or more) can be changed from an insulator to a conductor.
3)Anti-magnetic properties
Zirconia screws and aluminum oxide screws in conventional conditions can be anti-magnetic.
(4) Wear resistance
Its ultra-high hardness (Mohs 9) can maintain its original shape under continuous friction and is not consumed by wear and tear, and the shape does not change.
Chemical properties
1) Corrosion resistance
Zirconia ceramics do not react chemically with strong acids and alkalis. However, in a high temperature (above 200 degrees) water vapor environment, aging will occur.
(2) Antioxidant properties
Zirconia ceramics have good characteristics of impermeability to oxygen and other gases and liquid metals such as steel and are commonly used in high-temperature fuel cells, gas oxygen sensors, and metal liquid oxygen sensors.
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