Type: | Ceramic Parts | Application: | Structure Ceramic, Industrial Equipment |
---|---|---|---|
Material: | Alumina Ceramic | Processing Service: | Custom Processing |
Product Name: | Precision Ceramic Parts | Color: | Customizable |
Size: | Customized Size | Material Option: | Customizable |
Production Methods: | According To Drawing | Drawing Format: | 2D/(PDF/CAD)3D(IGES/STEP) |
Advantage: | High Precision | Quality Control: | 100% Inspection |
Port: | Shenzhen Or Hong Kong | ||
High Light: | High Strength Aluminum Oxide Ceramic Plate,Aluminum Oxide Ceramic Armor ISO9001 2015,aluminum oxide alumina ceramic |
Alumina ceramic is a 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.
Alumina ceramic performance table
|
|||||
Property
|
Item
|
Data
|
Unit
|
||
99.8% | 99% | 95% | |||
Mechanical Characteristics
|
color | Ivory | light yellow | White | - |
density | 3.93 | 3.85 | 3.7 | g/cm3 | |
Bending Strength | 370 | 310 | 300 | MPa | |
Compressive trength | 2,500 | 2,400 | 2,300 | MPa | |
Elastic Modulus | 390 | 340 | 320 | GPa | |
Fracture Toughness | 4 | 3~4 | 3~4 |
MPa m^1/2
|
|
Weber Coefficient | 12 | 12 | 12 | m | |
Vickers Hardness | 1,850 | 1,600 | 1,400 | HV 0.5 | |
Thermal Characterics
|
Coefficient of Line Thermal
Expansion
|
7~8 | 7~8 | 7~8 |
10^-6 K^-1
|
Thermal Conductivity
|
32 | 29 | 20 |
W/mK
|
|
Thermal Shock Resistance
(Put in Water)
|
280 | 200 | 250 | ΔT °C | |
Max Working Temperature
|
1,700 | 1,600 | 1,500 | °C | |
Electrical Characteristics
|
Volume Resistance at 20°C
|
>10^14 | >10^14 | >10^14 | Ωcm |
Dielectric Strength
|
15×10^6
|
15×10^6
|
15×10^6
|
V/m
|
|
Dielectric Constant | 10 | 10 | 10 | εr | |
One MHZ Dielectric Loss Angle
at 20°C
|
0.0001 |
0.0002
|
0.0004 |
tanδ
|
|
Chemical Characteristics
|
Nitric Acid (60%) 90°C
|
0.05 | 0.1 | 0.1 |
WT Loss mg/cm^2/day
|
Sulphuric Acid (95%) 95°C | 0.22 | 0.34 | 0.3 | ||
Caustic Soda (30%) 80°C
|
0.04 | 0.95 | 0.9 |