Question

How does the coefficient of friction in diamond compare to the others? Depositing diamond-like coatings on objects is relatively expensive. What might be some application you can think of where there would likely be a cost benefit of depositing diamond film coatings?

Answer 1

Diamond is the hardest material ever known whith highest thermal conductivity and it has low coefficient of friction under most cutting environments. This combination of properties make it the best material for cutting wear and it is known for excellent tribological applications.

High surface roughness downgrades the friction roughness and ear performance.

For diamond film coefficient of friction ranges from 0.05-0.15, for C2 Tungsten carbide 0.17-0.46, for Tool steel(HRC=62) 0.2-0.41, teflon 0.05-0.1,

CVD diamond in wear protection application is a rapidly emerging field since its erosion reistance is greater than high pressure sitererd diamond. Because cvd is 100% dense ith no voids.

Because of its unique combination of highest thermal conductivity and high electrical resistivity made the enabling material for new generatin computers.

It has a resistivity of 10^12ohm-cm

In aerospace materials and ne biomedical applications there is a benefit of applying CVD diamond technology because of its chemical interness.