Material:
Controlled Resistivity Alumina
Wesgo supplies charge dissipative Aluminas and charge dissipative coatings. Our controlled resistivity Al203's offer high strength, high thermal conductivity, good dielectric strength, and tailorable
resistivity. In addition, our CD coating will improve the breakdown voltage of high power, high vacuum
devices.
|
|
Al970CD |
Al960CD |
Al950CD |
Al940CD |
Al800CD |
Composition
(Al2O3 Wt%) |
>97% |
>96% |
>95% |
>94% |
>80% |
Density
(g/cc) |
3.8 |
3.8 |
3.8 |
3.8 |
3.8 |
Flexural Strength
(MPa) |
272 |
330 |
220 |
250 |
290 |
Young's Modulus
(MSI) |
51 |
51 |
48 |
47 |
40 |
Shear Modulus
(MSI) |
22 |
22 |
19 |
19 |
16 |
Poisson's Ratio
|
0.18 |
0.18 |
0.24 |
0.24 |
0.26 |
Grain Size
(Microns) |
10 |
10 |
10 |
10 |
10 |
Thermal Conductivity
(W/mK) |
22 |
22 |
23 |
21 |
22 |
Coeff. of Thermal Expansion
(10-6/C) RT-400ºC |
7.3 |
7.1 |
7.4 |
7.6 |
7.6 |
Volume Resistivity at RT
(ohm cm) |
6x1012 |
5x1011 |
9x1010 |
1x109 |
5x105 |
Dielectric Strength
DC Volts/mil |
697 |
740 |
- |
557 |
- |
Dielectric Constant
at 1 KHz |
14.9 |
20.1 |
- |
26.6 |
127,000 |
Dissipation Factor
at 1 KHz |
4x10-2 |
5x10-2 |
6x10-2 |
7x10-2 |
2x101 |
* Charge dissipative material is available in a variety of resistivity values and formulations. Please call for details.
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Wesgo® Ceramics
2425 Whipple Road, Hayward, CA 94544 USA
Phone (510) 491-1100 • Fax (510) 491-1175
A Division of Morgan
Advanced Ceramics
Morgan
Technical Ceramics is a Global Business
Unit of the Morgan
Crucible Company plc.
It comprises Morgan
Advanced Ceramics and Morgan
Electro Ceramics
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