| Application: | Industrial Ceramic, Power Electronics Industries |
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| Material: | Alumina Ceramic |
| Type: | Ceramic Rods |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Audited Supplier 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.
Technique Data of Beryllium Oxide Ceramic
| 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 |
Rongsheng Refractory is located in Xinmi city, "the Capital of Refractory" in China. We specialize in refractory products for nearly 30 years, covering a full range of shaped and unshaped refractory products, such as Refractory Bricks, Refractory Cement,Insulating and Dense Castables, Ramming Mass,Plastic Refractory,Gunning Mix,Ceramic Fiber Products, Graphite Products, Silicon Carbide Products, also other related products for more sophisticated applications.
280 workers, 20000 square meter workshop, 30 years experience, CE / ISO9001 / 2008 certificated, biggest raw refractory material original area in China, this is how we keep good quality and reliable cooperation for global valued customers. After nearly 30 years of innovation, Rongsheng Refractory has developed into a large-scale group enterprise known as a collection of science, industry and trade all over the world. Cooperate with many universities to establish research and development center, professional customer service and technology continuous tracking, can provide customers with differentiated, serialized, customized refractory products and services.
Believe that you will be the same as the customers which are from more than 30 countries and regions all over the world, and think it is so wise to choose Rongsheng Refractory, Rongsheng is here for you at any time. Welcome your inquiry.
1.Are you a manufacturer or a trader?
Manufacturer, some time we help our clients to purchase related products as a trader.
2.What's the MOQ?
The MOQ varies for different products. Please contact us to understand.
3.How do you guarantee quality?
Always a pre-production sample before mass production;Always final Inspection before shipment;
4.Can you provide samples for free?
Yes, we can supply samples for free, and the freight will be undertaken by clients.
5.May I visit your factory?
Yes, we will arrange professional reception personnel to patiently explain to you.
6.Why choose you over other suppliers?
We have a large scale, strong strength, and rich experience, professional technology, and perfect customer service, and have obtained various certifications such as CE/ISO9001/ISO45001.
7.What services can you provide?
Any delivery terms are acceptable
Accept any payment currency
Accept any payment type
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