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Nevz-Ceramics

Krasnuy Prospect 220,Novosibirsk,Novosibirskaya oblast,Russia

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Ceramic insulators

Russia

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Russia

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产品规格

Type : Insulating Ceramics Material : Alumina Brand Name : -

详情

Our technologies allow us to  produce ceramic insulators  for various applications (vacuum chambers, power semiconductor devices, image intensifying tubes) and ceramic tubes as well as other  ceramic products  for variety of industries. The products are manufactured of various types of vacuum tight ceramics that feature high values of electric resistance, mechanical strength, and dielectric properties.

 

 Ceramic insulators are applied in vacuum arch quenching chambers that are further installed in  vacuum breakers and load interrupters used in switch gear of electric mains (3-phase AC, 50 and 60 Hz).
nsulators for  power semiconductor devices housings are used  in power semiconductor devices (diodes and thyristors) of high voltage  converters.
Image intensifying tubes are used as  electro insulating  part  of military night vision devices for. The key  part of the  night vision device is an image intensifying tube that intensifies the light and  converts infrared light into visible.
 

etal coatings on flat surfaces:

Metal coatings provide a possibility for copper, stainless steel and Nickel  brazing at  temperature of  850-900 0C.

Types of metal coatings: Nickel (3-12 μm), Copper (3-300 μm). Copper  coating is at the stage of development.

Metal coatings are applied on an intermediate metal layer.

Following  types of the  intermediate metal layer are available: Mo-Mn-Si (40-75 μm).

Min Ceramic-Metal adhesion strength is 100 N/mm2.
 

Specifications of vacuum-tight ceramics

MAJOR PARAMETERS MAJOR PARAMETERS FORSTERITE CERAMICS
Apparent density, g/cm3, not less than 3,67 2,9
Apparent porosity,%, not more than 0,02 0,02
Bending strength, MPa, not less than 310 150
Coefficient of thermal linear expansion, 10-7, 1/°C in the temperature range, °C
20±10 - 200
58±5 83±5
20±10 - 500 67±5 98±5
20±10 - 900 79±5 109±5
Dielectric permittivity, not more than, at frequency of 1x106 Hz and temperature of 25 ± 10°C 10 6,2
Dielectric loss tangent, not more than, at frequency of 1.106 Hz 10 7,3
DC Volume resistivity, Ohm•cm, not less than, at temperature of 100 °С 1013 1014

 

联系我们

联系人:Ms. Natalia

公司名称:Nevz-Ceramics

办公地址:Krasnuy Prospect 220, Novosibirsk, Novosibirskaya oblast, Russia,

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