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Alumina Ceramic
Alumina ceramic is kind of structural ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity, dielectric loss, stable electrical performance characteristics. Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other products. We can make the part by hot injection pressing, dry pressing, 200T isostatic pressing and extrusion productive technology etc.
Properties of Alumina/Aluminum Oxide (Al2O3)
Very good electrical insulation (1x1014 to 1x1015 �©cm)
Moderate to extremely high mechanical strength (300 to 630 MPa)
Very high compressive strength (2,000 to 4,000 MPa)
High hardness (15 to 19 GPa)
Moderate thermal conductivity (20 to 30 W/mK)
High corrosion and wear resistance
Good gliding properties
Low density (3.75 to 3.95 g/cm3)
Operating temperature without mechanical load 1,000 to 1,500°C.
Advantages Application
Excellent mechanical strength Power semiconductor modules
Excellent electrical insulation Concentrator Photovoltaic Arrays (CPV)solar arrays
High thermal stability solid-state relays
High thermal conductivity High frequncy switch mode power supplies(SMPS)
The thermal expansion coefficient is close to that of silicon Electronic heating devices
may be structured just like printed circuit boards Automobile electronics
Power LED module
Electronic heating devices

DBC substrate are composed of a ceramic
insulator,Al2O3 or AIN onto which pure copper
metal is attached by a high temperature eutectic
melting process and thus tightly and firmly joined to the ceramic,
DBC substrates have high
thermal conductivity,excellent electrical
insulation,excellent current carrying capability,
and good mechanical strength,and the thermal
expansion coefficient is close to that of silicon
etc.As a new and high capability substrate.DBC
substrates have been used widely in electric
power and electronic industry.