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                HomeTrade news > About CVD diamond

                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 

                • CVD DIAMOND DRESSING BLANKS

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