nitriding
Nitrogen diffusion treatment
Nitriding is a heat treatment process that hardens the surface of metal, typically steel, by infusing it with nitrogen at high temperatures.
The nitrogen atoms diffuse into the metal's surface, creating a hard, wear-resistant outer layer while the core remains relatively soft and ductile.
This technique is widely used for machine parts, gears, and tools that need to withstand friction and stress.
The crankshaft underwent nitriding to extend its service life.
Hardening metal's exterior only
- thermochemicalConcerning heat in reactions
- diffusionPassive molecular spreading
- salt bathMineral-infused water immersion
- ammoniaAcrid nitrogen-hydrogen gas
temperature · furnace · cycle time · atmosphere · dissociation · adsorption · activation · controlled
Carbon-hardened iron alloy
- ironElement twenty-six
- alloyMetallic combination
- precipitationAtmospheric water deposit
- microstructureSubmillimeter material composition
Toothed rotating machine parts
- crankshaftsRods converting piston motion
- camshaftsLobed rods operating valves
- diesStops being alive
- moldsHollow shaping containers
cylinders · valves · bearings · aerospace · automotive · tooling · extrusion · injection molding
Resistance to penetration
- corrosion resistanceImmunity to chemical degradation
- case depthThickness of hardened surface
- ductilityAbility to stretch unbroken
- brittlenessProne to snapping
friction · galling · seizure · load bearing · scuffing
casehardening
Hardening metal's exterior only
- thermochemicalConcerning heat in reactions
- diffusionPassive molecular spreading
- salt bathMineral-infused water immersion
ammonia · temperature · furnace · cycle time · atmosphere · dissociation · adsorption · activation · controlled · batch
steel
Carbon-hardened iron alloy
- ironElement twenty-six
- alloyMetallic combination
- precipitationAtmospheric water deposit
microstructure · interstitial · tool steel · stainless steel
gears
Toothed rotating machine parts
- crankshaftsRods converting piston motion
- camshaftsLobed rods operating valves
- diesStops being alive
molds · cylinders · valves · bearings · aerospace · automotive · tooling · extrusion · injection molding
hardness
Resistance to penetration
- corrosion resistanceImmunity to chemical degradation
- case depthThickness of hardened surface
- ductilityAbility to stretch unbroken
brittleness · friction · galling · seizure · load bearing · scuffing