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What is Industrial Hard Carbon?
 

Industrial Hard Carbon thin film coatings are characterized by extreme hardness, lubricity, high wear resistance, high corrosion resistance and a number of other useful qualities. The films are deposited by a proprietary plasma-assisted chemical vapor deposition process. Far different from the diamond-like and carbide thin films familiar to many in the coating industry, IHC films are created from layers of nano-crystalline diamond and nano-crystalline silicon carbide in an amorphous matrix of both elements. It is this unique combination of layers and phases of diamond and silicon carbide that give IHC films both their wide range of properties and extremes in those properties only surpassed by pure diamond.

Properties

 
Hardness   ≥ 17 GPa (≥ 85 Rc)
Lubricity   Significant reduction in coefficient of friction lab tests and required torque in field applications as compared to bare metal. 50% or greater friction reduction with no lubrication as compared to bare metal is typical.
Wear Rate   Significant reduction
Flexural Strength   Can withstand > 46,000 psi tensile and compressive stresses and compressive strain of 0.17%.
Corrosion Resistance   Protects underlying substrate from most corrosive agents.
Conformal to Substrate   Plasma assisted CVD by definition deposits evenly over all surfaces of a part without special fixturing or rotation. 
Operating Temperature   ‐200°C / ‐320°F to > 600°C / 1112°F (dependent on oxygen partial pressure)
Thermal Conductivity   10 W/cm °K
Electrical Resistivity   > 109 ohm cm (doping options to lower r)
Color   Deep black
 

Technical Bulletins

IHC Hardness Comparison

Valve Application Note

Wrist Pin Application Note

 

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