Vacuum coater electron gun high voltage ceramic sealing

Sealed Electrical Connectors for feedthrough
Vacuum coater electron gun high voltage ceramic sealing
Vacuum coater electron gun high voltage ceramic sealing2
Vacuum coater electron gun high voltage ceramic sealing
Vacuum coater electron gun high voltage ceramic sealing2

Vacuum coater electron gun high voltage ceramic sealing

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Vacuum coater electron gun high voltage ceramic sealing

The power feedthrough with CF type vacuum flanged fitting. It is a electrical feedthrough and conveys high-voltage, high-amperage power into high-vacuum environments for operating heating coils in sputtering, coating and other demanding material evaporation applications or experiments.

Feedthroughs (or vacuum feedthroughs) come in many forms to transfer electrical currents, signals, fluids, gases or mechanical movements from outside the vacuum (air side) to the inside (vacuum side) of a vacuum chamber to equipment within the chamber. The entry point for the feedthrough must be vacuum-sealed via a suitable through hole. The feedthrough can be weldable (weld-on) or connected with a CF, KF or ISO vacuum flange to the vacuum chamber.

Features

1) Material:≥95% alumina
2) Made by processing after fining
3) With good performance such as thermal shock resistance, metalized strength
4) Used as ceramic switch tube of electrical vacuum in high voltage and highfrequency electrical tubes with big power.

Vacuum coater electron gun high voltage ceramic sealing

Product Description

Major components

95% 96%.99  Al2O3

Density

g/cm3

3.6

Material properties

Water absorption

%

O

Sintering temperature

°C

1600-1800

Physical properties

Hardness

HV

1500

Flexural strength

Kgf/cm2

3000

Compressive strength

Kgf/cm2

25000

Fracture toughness

Map.m3/2

3-4

Maximum temperature

°C

1800

Thermal properties

Coefficient of thermal expansion

/°C

8*10-6

Heat shock

T(°C)

220

Thermal conductivity

W/m.k(25-300°C)

25 14

20°C

>1012

Volume resistivity

100°C

>.cm

1012-1013

Electrical Characteristics

300°C

>1010

Insulation breakdown strength

KV/mm

18

dielectric constant

100MHz(E)

9.5

 

Applications:
Feed-through insulatorsPower switches
Insulating discsTraveling wave tubes
Insulator rings and cylindersVacuum interrupters
HeadersWindows
High-power receptaclesPower grid tubes
Precipitator productsX-ray tubes

 

Joining types:
Ceramic + Mo/Mn Metallized + plating Ni
Ceramic + Mo/Mn Metallized + plating Ag
Ceramic + Mo/Mn Metallized + plating Au
Ceramic + printing Ag
* Special types are available according to customer’s drawings or samples.

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