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Metalized Ceramic Discharge Tube
1)metallized alumina ceramic
2)Mo-Mn or W metallized
3)Ni or Sn plating
4)high dielectric strength & high voltage resistivity
Our products produce excellent sealing and connecting performance with high mechanical strength.They can be welded to various king of hard soleder,such as gold,silver and copper.They are extensively used in gas electrical discharge devices,electronics ,power generators,telecom,metallurgy,machinery,aviation and military.
Item |
Test Condition |
Technical Data |
Insulating Electric Resistance |
Relative Humidity<80% |
1×1012Ω/DC100 |
Hermeticity |
Leaking Rate |
<10×108 Pa-M2/S |
Joint Strength |
---- |
>120MPa |
Residue |
In Hydrogen |
600C×10min No Color change |
We can do Mo-Mn and W metallization, Ni and Sn plating,also we can do glazing after metalized.
Features:
High mechanical strength High dielectric strength
Low loss in high frequency Low gas leakage coefficient
High voltage resistance High precise dimension
Materials Performance
|
Item |
Unit |
Performance |
||||||
Alumina ceramic |
steatite ceramic |
||||||||
90% |
92% |
95% |
96% |
||||||
|
Ceramic Body
|
Appearance |
Color |
- |
white,ivory white,brown,black |
White off-white |
||||
|
Mechanical Characters |
Bulk Density |
g/cm3 |
≥3.6 |
≥3.65 |
≥3.7 |
≥3..75 |
2.7 |
||
|
Water Absorption |
% |
0 |
0 |
||||||
|
Flexural strength |
MPa |
280 |
300 |
310 |
320 |
150 |
|||
|
(HV) Hardness |
GPa |
12 |
5.8 |
||||||
|
Thermal Characters |
Coefficient of linear thermal expansion |
20℃~800℃ ×10-6mm/℃ |
6.3~7.3 |
6.4~7.4 |
6.5~7.5 |
6.8~7.8 |
8.0 |
||
|
Thermal Conductivity |
W/(m.K) |
12 |
16 |
20 |
23 |
2 |
||
|
Electrical Characters |
Dielectric constant(1MHz) |
— |
9~10 |
9~10 |
9~10 |
10 |
7.5 |
||
|
Dielectric loss angle |
×10-4 |
≤6 |
≤5 |
≤4 |
≤3 |
8 |
|||
|
Dielectric Strength |
KV/mm |
15 |
20 |
24 |
28 |
18 |
|||
|
Metalized Ceramics |
Gas leakage coefficient |
Pa.m3/s |
≤10-8 |
- |
|||||
|
Volume resistivity |
Ω.cm |
≥1015 |
- |
||||||
|
Combined strength |
MPa |
≥120 |
- |
||||||
|
Thickness of Metal |
μm |
≥20 |
- |
||||||
Company Profile
Changsha Ultronic Ceramic Technology Co., Ltd. is located in Changsha City, the capital of Hunan Province. Since its establishment in September 2010, Ultronic has been devoted to manufacturing alumina ceramics and steatite
ceramics for electric components and industrial ceramics. Now, we have the forming technologies of hot pressing, dry pressing, injection molding,
tape casting, and isostatic pressing. We also have the special process of
surface metallization, glazing, and polishing. Our main products include
ceramic thermostat housing, ceramic rod, metalized ceramic GDT tube, faucet cartridge ceramic disc, ceramic insulating plate and so on. And we supply to leading companies in respective business, such as and so on.
We have below product categories
Ceramic Substrate
Zirconia Ceramic
Steatite Ceramic Parts
Ceramic Pin/Rod
Ceramic Tube/Ring
Ceramic Lamp Holder
Thermostat Ceramic Parts
Ceramic Faucet Cartridge Discs
Metalized Ceramic Parts
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