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Unread 11-12-2012, 16:20
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Tristan Lall Tristan Lall is offline
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Re: VEX PRO. To use it or not to use it.

Quote:
Originally Posted by DMike View Post
I have ordered some of the gears to test what VEX is calling a teflon infused ceramic coating, not to be confused with Anodizing.
It sounds like they're using ordinary Teflon-impregnated anodizing. Aluminum oxide, (a.k.a. alumina, Al2O3, carborundum or sapphire) is a ceramic, although it is somewhat unconventional to describe it as such in these circumstances.

I doubt very much that they're using a flame-sprayed ceramic coating. (What would be the point, and how do you apply Teflon at those temperatures?)

Interestingly, they're apparently applying the coating after machining, given the claims of reduced friction (application after machining also tends to contraindicate a flame-sprayed ceramic in this application). Most high-quality anodized aluminum gears are made from 2024, and anodized before the teeth and bores are finished (i.e. the cut teeth are bare metal).
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