Round Ceramic Plate Industrial High Alumina Substrate In Electrical
Ceramics
Industrial High Alumina Substrate In Electrical Ceramics
Main characteristics of alumina ceramic substrate
1. Good thermal shock resistance, greater than 220 T(ºC)
2. High thermal conductivity of high purity alumina, up to 30 W/m.k
at 25ºC
3. Good surface roughness, flatness to be 0.05mm with min. warpage,
deformation
4. High dielectric strength, low dielectric constant, and
dielectric loss.
5. Laser cutting or precision machining cutting makes tight
tolerance.
The specification of the ceramic substrate
1. Materials: 96% alumina, 99% alumina, 99.5% alumina, zirconia,
silicon nitride, silicon carbide optional
2. Dimensional capability: the side length to be 500mm x 600mm, the
thickness can be 0.15mm to 30mm
3. Surface treatment: lapping, fine ground, diamond-like polished
to be Ra0.05, metallization, glazed
The description of alumina ceramic substrate
We have been making alumina (Aluminum oxide, Al2O3) ceramic
substrate for over 12 years under rigorous quality control with
carefully selected high purity ceramic materials ranging from 95%
to 99.8%.
All these alumina sheets offer extraordinary properties of
electrical insulation, thermal conductivity, breaking strength, and
high-temperature resistance. Furthermore, one of the unique
properties is its superb surface roughness to be Ra0.2 which
results in excellent adhesion strength with a thin film and thick
film metallization due to fine particles, also it can play a very
important role in the sintering process which work as alumina
ceramic setter.
The regular forming methods we use include tape-casting, isostatic
pressing, dry pressing. We are dealing with a variety of selection
of thicknesses from small-size to large-size capability. With our
comprehensive types of manufacturing types of equipment, we have
the capability from prototyping to mass production in the short
term.
The checklist of alumina ceramic sheets in stock
Size
(Unit: mm) | Thickness |
| 132 x 142 | 1.0 | 0.635 | 0.80 | |
| 114 x 114 | 1.0 | 0.635 | 0.80 | 0.385 |
| 109 x 130 | 1.0 | 0.635 | 0.80 | |
| 109 x 109 | 1.0 | 0.635 | 0.80 | |
| 287 x 87 | | 0.635 | | |
| 395 x 83 | 1.0 | | | |
| 122 x 120 | 1.0 | | 0.80 | 0.50 |
| 109 x 120 | 1.0 | 0.635 | 0.80 | |
| 138 x 190 | 1.0 | 0.635 | 0.80 | 0.50 |
| 127 x 127 | 1.0 | 0.635 | 0.80 | |
| 280 x 240 | 1.0 | 0.635 | 0.80 | |
Remark:
All the above ceramic sheets can be cut as per customers' detailed
specifications.
Related products of technical ceramic sheets
