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Beryllium oxide ceramic parts used for auto and semiconductor and large integrated circuit

BeO Parts

Beryllium oxide ceramic parts used for auto and semiconductor and large integrated circuit

Beryllium oxide ceramics are advanced ceramics with beryllium oxide (BeO) as the main component. It is mainly used as the material of large-scale integrated circuit board, high-power gas laser tube, heat dissipation shell of transistor, microwave output window and neutron reducer.

Beryllium oxide has a melting point of 2530-2570℃ and a theoretical density of 3.02g/cm3. It can be used in 1800℃ vacuum, 2000℃ inert atmosphere, 1800℃ oxidation atmosphere for a long time. The most prominent performance of beryllium oxide ceramics is its large thermal conductivity, which is similar to aluminum and 6-10 times that of alumina. It is a dielectric material with unique electrical, thermal and mechanical properties.

    Advantages Of Beryllium Oxide Ceramics

    Beryllium oxide ceramics have the characteristics of high thermal conductivity, high melting point, high strength, high insulation, high chemical and thermal stability, low dielectric constant, low dielectric loss and good process adaptability. It is widely used in special metallurgy, vacuum electron technology, nuclear technology, microelectronics and optoelectronics technology.

    Applications Of Beryllium Oxide Ceramics

    1. High power electronic device/integrated circuit field

    The high thermal conductivity and low dielectric constant of beryllium oxide ceramics are the key reasons for its wide application in the field of electronic technology.

    (1) In the application of electronic substrates, compared with our well-known alumina substrates, beryllium oxide substrates can be used at 20% higher frequencies in the same thickness, and can work at frequencies as high as 44GHz. Commonly used in communications, live broadcast satellites, mobile phones, personal communications, base stations, satellite reception and transmission, avionics and global positioning systems (GPS).

    (2) Compared with alumina ceramics, the high thermal conductivity of beryllium oxide ceramics can make the heat generated in the high-power device timely and effectively conducted, and can withstand greater continuous wave output power, so as to ensure the stability and reliability of the device. Therefore, it is also widely used in broadband high-power electronic vacuum devices, such as the energy input window, support rod and buck collector of TWT.

    2. Nuclear technology material field

    The development and utilization of nuclear energy is an important way to solve the problem of energy shortage. Reasonable and effective use of nuclear energy technology can provide huge energy for social production to supply power and heat. Some ceramic materials are also one of the important materials in nuclear reactors, such as neutron reflectors and moderators (moderators) of nuclear fuel are usually used by using BeO, B4C or graphite materials. Beryllium oxide can be used as neutron moderator and radiation protection material in atomic reactors. In addition, BeO ceramics high temperature irradiation stability is better than beryllium metal, density is larger than beryllium metal, high temperature at quite high strength and thermal conductivity, and beryllium oxide is cheaper than beryllium metal. This makes it more suitable for use as a reflector, moderator and dispersion phase fuel matrix in reactors. Beryllium oxide ceramics can be used as control rods in nuclear reactors, and it can also be combined with U2O (uranium oxide) ceramics to become nuclear fuel.

    3. Refractory field

    Beryllium oxide ceramics is refractory material, can be used as refractory support rods for heating elements to protect shields, linings, thermocouple tubes as well as cathodes, thermotron heating substrates and coatings.

    4. Other fields

    In addition to the above application of several categories, beryllium oxide ceramics have many other aspects of application.

    (1) BeO can be added as a component into glass in various compositions. Glass containing beryllium oxide can pass through X-rays, and X-ray tubes made of this glass can be used for structural analysis and in medicine to treat skin diseases. Beryllium oxide affects the properties of glass, such as increasing the specific gravity of glass, water resistance and hardness, increasing the coefficient of expansion, refractive index and chemical stability. It can not only be used as a special glass component with high dispersion coefficient, but also as a glass component through ultraviolet ray.

    (2) High purity BeO ceramics have good heat transfer performance and can be used to make rocket head cones.

    (3) BeO can Be made with BE, Ta, Mo, Zr, Ti, Nb metals equipped with specific linear (swelling) expansion coefficient and special thermal properties of metal ceramic products, such as the spray metal BeO lining is used in the automotive ignition device for Ford and General Motors corporation.