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3. Gaseous treatments
3.1 Ammonia gas nitriding
Anhydrous ammonia gas of superior quality to 99.98% (recommended values: H 2 0 < 200 ppm, oil < 2 ppm, dew point temperature < - 48°C) or better to 99.99% (table 3 ) is injected into a sealed metal muffle furnace (pot or bell furnace) with perfect mixing of the atmosphere and high temperature accuracy (SAE-AMS 2759/6A recommends ± 8°C).
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Gaseous treatments
Plasma-assisted treatment or ion nitriding and nitrocarburizing
Bibliography
Standards and norms
French Standards Association (AFNOR)
PSA
- Nitruration - 315-2240 - 02.85
- Nitruration des aciers - 02-60-206 - 01.93
- Spécification technique pour la nitruration et les nitrocarburations des dentures d'engrenages - DN1 - 12.88
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