Ferritic Nitrocarburizing is a variation of nitriding, which is a case-hardening process commonly used on steel, stainless steel, and cast iron. It is similar in concept to carburizing, and yields a harder surface, but less case depth. Both processes are done in atmosphere furnaces which dissociate gases (ammonia for nitriding, methane for carburizing) in an atmosphere devoid of oxygen. One characteristic of gas nitriding is that it forms a multiphase compound layer on the surface which is extremely hard, but brittle, so in normal nitriding processes, the white layer is chemically stripped off afterwards. I think the difference with Ferritic Nitrocarburizing is they have come up with a process that forms a ductile white layer that will not fracture and break off. Never mind the fact that it is 10 microns thick, it is a lot harder than brake pads, so it will be very wear resistant. But if the brake rotors are turned to regenerate the friction surface, the entire nitride layer will be removed and they'll be just like any other non-treated rotor.
Ferritic Nitrocarburizing
- Thread starter SteveSRT8
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Originally Posted By: gonefishing
Actually 10 microns would be 0.00039" (one too many zeros in there). Just the machinist coming out in me!
Thanks for the catch. I think I put 1 in the unit converter instead of 10.
Actually 10 microns would be 0.00039" (one too many zeros in there). Just the machinist coming out in me!
Thanks for the catch. I think I put 1 in the unit converter instead of 10.
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