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        About CVD diamond

        Writer:JuneSource:self edited Number of visits: Date:Jan 23,2019

        CVD diamond (Chemical Vapor Deposition Diamond) , at Tianjin Baolixin, is produced throgh Dc Arc Plasma Jet method, the growth conditions are created by thermal disassociation of hydrogen, and a gaseous source of carbon in plasma, with a gas temperature above 2000 and subatmospheric pressure, that depositing polycrystalline diamond as a layer on a substrate (or control growth condition to deposit monocrystalline diamond).

         

        CVD diamond does not contain any metal catalyst, so its thermal stability is close to natural diamond. CVD diamond grains are arraying in random order, and have none-brittle cleavage surface, so it appears isotropy.

         

        (一) CVD Specifications

         

        Hardness

        Tensile strength

        Compressive strength

        Friction factor

        8000~10000Kg/mm2

        272 Kg/mm2

        9.8×1013 Kg/mm2

        0.05~1

        Young’s modulus

        Density

        Coefficient of thermal shock

        Poisson's ratio

        1.05GPa

        3.51g/cm3

        107W/m

        0.22

        Coefficient of thermal conductivity

        Thermal expansion coefficient

        Resistivity

        Relative permittivity

        8~20W/(cm·K)

        2.3×10-6/

        ~106Ω·m

        5.7

        Electron mobility

        Hole mobility

        Electron drift velocity

        Bandgap energy

        2200cm2/V·S

        1800 cm2/V·S

        2.5×107cm/s

        5.45ev

         

        () DC Arc Plasma Jet method to product CVD diamond.

         

        At present, in the CVD industry, there are three main technics to produce CVD diamond: hot-filament method, microwave CVD method, DC Arc Plasma Jet method, among them, the DC Arc Plasma Jet method is superior as its high grow speed, higher purity. With so many outstanding and consistent properties , CVD diamond has been optimized for mechanical, microelectronics, thermals, optics, aerospace applications etc.

         

        We have advanced DC Arc Plasma Jet machines and high production skills, the CVD diamonds we produced have stable quality, are well recognized by customers.

        TypeInfo: Trade news

        Keywords for the information:CVD diamond  monocrystalline diamond  polycrystalline  CVD diamond wafer  diamond dresser blank 

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