ZTA Sheet/Plate
Abstract:
ZTA Sheet/Plate features high strength and toughness, and wear resistance, so it has a wide range of applications. Supreme Ceramic Materials (SCM) supplies ZTA Sheet/Plates with high quality and fast delivery, and customized products are also available.
Description:
The main advantage of Zirconia Toughened Alumina (ZTA) is the additional strength and toughness over alumina with a lower cost than zirconia (YTZP, MSZ, CSZ). The combination of aluminum oxide and 10-20% zirconium oxide provides a much higher strength, toughness, hardness and wear resistance than alumina alone.
The 20-30% increase in strength often provides the design criteria needed at a much lower cost than using zirconia.
ZTA should be considered for any application where structural strength is needed that exceeds the standard alumina properties.
Specification of ZTA Sheet/Plate
|
|
Condition |
Unit |
ZTA Substrate |
|
|
ZTA |
||||
|
Material |
- |
- |
Al2O3/ZrO2 |
|
|
Color |
- |
- |
White |
|
|
Bulk Density |
- |
g/㎤ |
4 |
|
|
Surface Roughness Ra |
- |
µm |
0.2 |
|
|
Reflectivity |
0.3-0.4mmt |
% |
80 |
|
|
0.8-1.0mmt |
90 |
|||
|
Mechanical |
Bending Strength |
3-point method |
MPa |
700 |
|
Modulus of Elasticity |
- |
GPa |
310 |
|
|
Vickers Hardness |
- |
GPa |
15 |
|
|
Fracture Toughness |
IF method |
MPa･m1/2 |
3.5 |
|
|
Thermal |
Coefficient of Thermal Expansion |
40-400°C |
10-6/K |
7.1 |
|
40-800°C |
8 |
|||
|
Thermal Conductivity |
25°C |
W/(m･K) |
27 |
|
|
300°C |
16 |
|||
|
Specific Heat |
25°C |
J/(㎏･K) |
720 |
|
|
Electrical |
Dielectric Constant |
1MHz |
- |
10.2 |
|
Dielectric Loss Factor |
1MHz |
10-3 |
0.2 |
|
|
Volume Resistivity |
25°C |
Ω･㎝ |
>1014 |
|
|
Breakdown Strength |
DC |
㎸/㎜ |
>15 |
|
