Ceramic Comparator Table
| Ceramic |
Electricalinsulation |
ThermalInsulation / (conductivity)
|
Max. Temp. of use (no load) °C |
Thermal
|
Wear resistance |
Mechanical
|
Corrosion resistance |
|---|---|---|---|---|---|---|---|
Alumina |
+++ | (++) | 1900 | + | +++ | + | +++ |
Aluminium nitride |
+++ | (++++) | 1200 | ++ | ++ | + | ++ |
Zirconia MgO-PSZ |
+ | +++ | 1000 | +++ | +++ | +++ | +++ |
Zirconia Y-TZP |
+ | +++ | 2000 | +++ | ++++ | ++++ | +++ |
Quartz |
+++ | +++ | 1100 | +++ | ----- | ----- | + |
Silicon carbide (sintered) |
Conductive | (+++) | 1800 | ++++ | ++++ | ++ | ++++ |
Silicon nitride |
++ | (++) | 1400 | +++ | ++++ | +++ | +++ |
Macor ® |
+++ | +++ | 1000 | +++ | ----- | ----- | ----- |
Comparator data given for information only
KEYS :
+ : poorKEYS :
++ : acceptable
+++ : good
++++ : excellent
------- : non-applicable
Note re. Thermal insulation / (conductivity) : information given when comparing ceramics only. Apart from aluminium nitride, and to a lower degree, sintered silicon carbide, these ceramics are excellent insulating materials compared to metals.