Alumina substrate

Alumina substrate



Alumina Al2O3 substrate presentation



Dense sintered alumina 96% and 99,7% 

  • Thickness: 0.15 - 0.25 - 0.38 - 0.5 - 0.63 - 0.76 - 1 - 1.27 - 1.52 - 2 mm
  • Formats: 50.8 x 50.8 to 168 x 168 mm

Properties

  • High corrosion resistance
  • High abrasion resistance
  • Good electrical isolation
  • Very good gliding properties
  • High planarity
  • Good thermal conductivity
  • Good mechanical strength 



Porous sintered alumina 99%

  • Thickness: 1 - 1.5 - 2 mm
  • Formats: 100 x 100 to 168 x 168 mm

Properties

  • High corrosion resistance
  • High abrasion resistance
  • Good electrical isolation
  • Very good gliding properties
  • Good mechanical strength
  • Gases can diffuse by the material
  • Weight of the individual plates is very light 



Alumina Al2O3 substrate areas of application 

The porous alumina substrates are often used as sintering base with the thermal treatment of LTCC, piezo-ceramics, SOFC-electrolytes, dental ceramics and metallic materials to 1500 °C.



Alumina Al2O3 substrate characteristics

CHARACTERISTICS

Al2O3 99

Al2O3 96

Al2O3 99 porosity 40%

Alumina

%

99

96

99

Color

/

White

White

White

Gross density

g/cm3

3,88

3,78

2,56

Surface roughness Rmax

µm

3

4

12

Surface roughness Ra

µm

0,2

0,5

0,7

Bending strength

N/mm²

500

400

~ 60

Thermal conductivity 

W/(K.m) 

25

24

 /

Dielectric strength

kV/mm

> 10

> 10

 /

Resistivity

Ohm.µm

10 14

10 12

 /