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Beryllia Ceramics/Beryllium Oxide Ceramics Beryllium oxide ceramics are ceramics with beryllium oxide as the main component. Mainly used as a substrate for large-scale integrated circuits, high-power gas laser tubes, heat sink shells for transistors, microwave output windows and neutron moderators. Characteristics of Beryllium Oxide Ceramics Pure beryllium oxide (BeO) belongs to the cubic crystal system, and its density is 3.03g/cm3. The melting point is 2570ºC, it has high thermal conductivity, the thermal conductivity λ is 200-250W/(m.K), and it has good thermal shock resistance. Beryllium oxide ceramics are made of beryllium oxide powder as raw material, alumina and other ingredients are added and sintered at high temperature. The melting temperature range of beryllium oxide is 2530ºC~2570ºC, and its theoretical density is 3.02g/cm3. It can be used for a long time at 1800ºC in vacuum, 2000ºC in inert gas, and 1800ºC in oxidizing atmosphere. ºC to volatilize. The most outstanding performance of beryllium oxide ceramics is its large thermal conductivity, which is similar to that of metal aluminum and 6 to 10 times that of aluminum oxide. It is a dielectric material with unique electrical, thermal and mechanical properties. Application of Beryllium Oxide Ceramics Beryllium oxide ceramics are widely used in microwave technology, electric vacuum technology, nuclear technology, microelectronics because of its high thermal conductivity, high melting point, strength, high insulation, low dielectric constant, low dielectric loss and good packaging process adaptability. It has been valued and applied in the field of optoelectronic technology, especially in high-power semiconductor devices, high-power integrated circuits, high-power microwave vacuum devices and nuclear reactors. It has always been the mainstream ceramic material for preparing high thermal conductivity components.
Specification
Beryllium Oxide Ceramics Technical Data:
Item
Test Conditions
Specification
Unit
B-97
B-99
Dielectric Constant
1MHz
6.90.4
6.90.4
(100.5)GHz
Dielectric Loss Tangent
1MHz
≤4X 10-4
≤4X 10-4
(100.5)GHz
≤8X 10-4
≤8X 10-4
Volume Resistivity
25ºC
≥1014
≥1014
Ω.cm
300ºC
≥10"
≥10"
Breakdown Strength
D C
≥15
≥20
kV/mm
CMOR
-
≥170
≥190
MPa
Average Linear Expansion Coefficient
25ºC~500ºC
(7.0~8.5)*10-4
(7.0~8.5)*10-4
I/K
Thermal Conductivity
25ºC
≥200
≥240
W/m.K
100ºC
≥160
≥190
Thermal Shock Resistance
0ºC-800ºC
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
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2011
Total Annual:
20000000-50000000
Employee Number:
101~150
Ecer Certification：
Verified Supplier
Our company can provide not only the domestic and foreign customers excellent quality of high-temperature thermal insulation material, but also the first-rate service including professional furnace lining design, installation supervision, engineering construction etc.
<p style="... Our company can provide not only the domestic and foreign customers excellent quality of high-temperature thermal insulation material, but also the first-rate service including professional furnace lining design, installation supervision, engineering construction etc.
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