Decreasing Friction?

[Visionary]

To what limit can I reach with the decrease of the Coefficient of Friction?

Say we have a surface that is 0.1, is it possible to make it 0.01 or 0.001?

I believe it might be probable. By perfectly(well, semi- perfectly) cutting the surface of the materials, and also adding ultra-lubricants to the mix to get such a result.

Edited August 29, 2013 by Visionary

[Visionary]

Is it possible to drop the coefficient of friction from 0.1 to 0.01 or 0.001?

[Enthalpy]

I achieved about 0.02 static friction at a screw+nut with the proper lubricant. I've never read a lower value reported.

 

What do you mean by "perfectly cutting"? "Flat" for instance doesn't essentially reduce friction. Plastics even rub less against a somewhat rougher metal.

 

If you guarantee a minimum speed, then hydrodynamic bearings can achieve an extremely low friction. 0.001 is realistic then. Or use ball bearings.

[Visionary]

I discovered a carbon coating material that will soon be commercialized.

And the numbers are amazing!

check this.

 

This coating could make the COF = 0.001 - 0.006

Now that's almost frictionless!

My goal is to reach such a number in our mechanics.

And I think that will happen very soon!

[Endercreeper01]

Hmm.. This seems interesting. I think you might.

[studiot]

What you have to remember is that the coefficient of friction refers to both contacting surfaces.

 

So any statement of the type " The coefficient of friction of steel, rubber, carbon coating...is x" is basically meaningless.

You need to state "carbon on carbon", "steel on ice" or whatever.

[Visionary]

Thanks Studiot, I knew that.

If this new technology is commercialized we can created two surfaces and coat this bad boy on them.

And its pure carbon(or diamond), not a good conductor of heat or electricity.