Beryllium Oxide Ceramic

wide application

good treatment effect

stable operation and low cost

  Description

We mainly produce beryllium oxide, boron nitride, silicon carbide, corundum mullite ceramic, A-75 ceramic, A-95 ceramic, A-96 ceramic, A-99 ceramic and other ceramic products, which are widely used in aerospace, microelectronics, optoelectronics, communications, electric vacuum and power electronics industries, among which the production technology of beryllium oxide ceramics represents the highest level in China, and the product performance indexes reach the world advanced level.

  Technical Data:

Item

Test Conditions

Specification

Unit

B-97

B-99

Dielectric Constant

1MHz

6.9士0.4

6.9士0.4

 

(10士0.5)GHz

Dielectric Loss Tangent

1MHz

≤4X 10-4

≤4X 10-4

 

(10士0.5)GHz

≤8X 10-4

≤8X 10-4

Volume Resistivity

25℃

≥1014

≥1014

Ω.cm

300℃

≥10"

≥10"

Breakdown Strength

D C

≥15

≥20

kV/mm

CMOR

-

≥170

≥190

MPa

Average Linear Expansion Coefficient

25℃~500℃

(7.0~8.5)*10-4

(7.0~8.5)*10-4

I/K

Thermal Conductivity

25℃

≥200

≥240

W/m.K

100℃

≥160

≥190

Thermal Shock Resistance

0℃-800℃

There should be no cracks

 

Bulk Density

 

≥2.85

≥2.85

g/ cm3

Chemical Stability

1:9HCL

≤0.3

≤0.3

Mg/cm2

10% NaOH

≤0.2

≤0.2

Air Tightness

-

≤10*10-11

≤10*10-11

Pa. m3/s

Average Grain Size

-

12~30

12~30

μm

 

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