Alumina Wafer Polished Refractory Insulation Hardness Wear
Resistant Ceramic Wafer
Advantages of Alumina Wafers:
A. Refractory.
B. Self Lubricating
C. Long Service Life.
D. Good Polished Surface.
E. Environmental and Healthy.
F. Superior Mechanical Strength.
G. High Corrosion and Wear Resistance.
H. Good Insulation Performance Precision.
I. High Temperature and Pressure Resistance.
J. High Purity Zirconia and Alumina Ceramic Material.
Alumina Wafer is kind of structural ceramics, with insulation resistance, voltage
resistance, high strength, good thermal conductivity, dielectric
loss, stable electrical performance characteristics.
Alumina Wafer 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, isostatic pressing and extrusion productive technology
etc.
Main Applications
A. Substrates for thin film circuits
B. Sensor component substrates
C. Substrates for semiconductor processing
Features
A. Able to manufacture up to a maximum size of φ400 mm (φ16 inch).
B. The material has a low surface roughness (Ra 0.02μm or less) and
few surface pores which makes it possible to form fine circuit
patterns.
C. The high bending strength allows a reduced thickness.
D. The small dielectric loss tangent in the high frequency band
makes it ideal for use with high-frequency circuits.
| Alumina Ceramic Properties | 96% Alumina Ceramic | 99% Alumina Ceramic |
| Item | Unit | Typical Values |
| Physical Properties |
| Color | | White | Ivory |
| Density | g/cm3 | 3.7 | 3.85 |
| Alumina Content | % | 96% | 99% |
| Gas permeability | | 0 | 0 |
| Water Absorption | | 0 | 0 |
| Mechanical Properties |
| MONS' Hardness | Grade | 9 | 9 |
| Rockwell Hardness | HRA | 80 | 82 |
| Vickers Hardness (Hv50) | Gpa(Kg/mm²) | 15.7(1600) | 15.7(1600) |
| Flexural Strength(20°C) | Mpa | 300 | 330 |
| Compressive Strength(20°C) | Mpa | 2000 | 2000 |
| Modulus of Elasticity | Gpa | 275 | |
| Poisson's Ratio (20°C) | | 0.22-0.23 | |
| Fracture Toughness(20°C) | MPam1/2 | 3.5 | 4 |
| Thermal Properties |
| Thermal Conductivity(20°C-400°C) | W(m.K) | 25 | 27.5 |
| Thermal Expansion | 10-6/°C | 6.5-7.5 | 7.6 |
| Maximum Use Temperature | °C | 1600 | 1650 |
| Electronic Properties |
| Dielectric | KV/mm | >12 | >10 |
| Dielectric Constant | Er | 9-10 | 9.1 |
| Dielectric Loss Angle(1MHz) | | 0.0002 | 0.0002-0.0003 |
| Product Name | Precision Machining Zirconia Ceramic Polished Rods & Shafts |
| Material | Zirconia, Alumina, Silicon Nitride and Machinable Ceramic |
| Length | 10mm - 200mm |
| OD | 0.3mm - 30mm |
| Torlerance | +/- 0.001mm |
| Surface Roughness | Ra0.05 |
| Shipping | Air Express (DHL/UPS/TNT/ FedEx) |
| Lead time | 10 - 30days |
Company Introuduce
Wuxi Special Ceramic Electrical Co.,Ltd mainly produces alumina, Silicon nitride, Zirconia, Steatite, Boron nitride,
Cordierite,mullite products, widely used in metal welding, electronic conductor, mechanics,
assembling, insulation, chemicals, instrument, textile, nuclear
industry, aerial field.We accept trial produce according to the
drawing or sample.It usually takes 15 days to finish trial
product.Mass produce usually takes 30 days.Goods' package is carton
or PLT.It can be negotiable with each other.
We mainly sell goods to toshiba lighting group in Japan and
Europe.Our aim is to deliver goods with high quality at quick
delivery date.
