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Vacuum Device, Instrument Ceramics Use Aluminium Oxide High Vacuum Ceramic
Vacuum Device, Instrument Ceramics Use Aluminium Oxide High Vacuum Ceramic
Supplier Info
[China Supplier]
Contact Person : Mr. Chen Felix
Tel : 86-23-67726679
Fax : 86-23-67742083
Product Detail
1,Great compression strength. 2,Fine electrical property, 3,Corrosion resisting, 4,Antioxidation, etc.

Special state:We manufacture ceramic by customer's drawing and

 requirement.

95% Al2O3 ceramic products have the characteristics of great compression strength,fine electrical property,corrosion resisting and

 antioxidation, etc. They are applied to vacuum device, instrument ceramics, line insulation, switches of bands, outlets of electronic 

tubes, inductance coil skeleton, capacitor pillars, holders, thick film and thin film circuit blocks, controllable silicon and solid circuit 

outer skin, sparking plug ceramics, textile ceramics, fuse-tube ceramics and high-temperature materials of construction, etc.

Properties of electric ceramic material: 

Properties Item

Unit and Symbol

97%Al2O3

95%Al2O3

90%Al2O3

75%Al2O3

Talcum Ceramic

Bulk Density

g/cm3

>4.0

>3.6

>3.4

>3.2

>2.6 

Dismantle-resistant Strength

kgf/cm2

3880

2800

2300

2000

1200

Coefficient of the Mal Expansion

20ºC~500ºC

×10-6mm/ºC

6.8~7.8

6.5~7.5

6.3~7.3

≤6

≤8

Medium Electric Constant

1MHz20ºC

10~11

9~10

9~10

≤9

≤7.5

Tangent Value of Medium Loss Angle

1MHz20ºC~500ºC

×10-4

≤3

≤4

≤6

≤10

≤20

Volume Resistivity at 100ºC

Ω·cm

>1015

>1014

>1013

>1013

>1013

Breakdown Strength

kv/mm

24

15

15

20

20

The belowed is inspection equipments.

  
 

Vacuum Device, Instrument Ceramics Use Aluminium Oxide High Vacuum Ceramic

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