Founded in 1984, Crystallume pioneered the development and application of Chemical Vapor Deposition (CVD) diamond technology. Since then, Crystallume's coating experts have become specialists at solving customer problems with diamond technology.
CVD diamond has all the extreme chemical and physical properties of natural diamond and high-pressure, high temperature (HPHT) synthetic diamond. CVD diamond is essentially pure diamond formed as interconnected diamond microcrystallites with no binder – grown directly on the tool substrate. With the intense interest of product designers, diamond may become as common as aluminum is today. Its popularity has grown because diamond properties are found at the extreme poles on material scales and therefore offer many benefits.
|Property||Crystallume CVD Diamond||Alternative|
|Thermal Conductivity (w/cm-°C)@25°C||22||Copper 4|
|Hardness (kg/mm2)||9000||CBN 4500|
|Optical Transmissivity||225 nm to far IR||Sapphire|
|Band Gap (eV)||5.4||GaAs 1.43|
|Coefficient of Friction||0.05-0.7||Teflon®0.05|
|Thermal Expansion (ppm)||2||Si 2.6|
|Electrical Resistivity (ohm-cm)||1015 (<10-3doped)||AI203 1015|