Iron-chromium-nitrogen system
Formation and hardening of the diffusion layer by nitriding and nitrocarburizing - Iron-chromium-nitrogen and iron-chromium-carbon-nitrogen systems

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M1223 V1 Article

Iron-chromium-nitrogen system
Formation and hardening of the diffusion layer by nitriding and nitrocarburizing - Iron-chromium-nitrogen and iron-chromium-carbon-nitrogen systems

Authors : Jacky DULCY, Michel GANTOIS

Review date: March 26, 2024 | Lire en français

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1. Iron-chromium-nitrogen system

Nitrogen transfer in ternary iron-chromium-nitrogen systems involves diffusion-precipitation mechanisms. To illustrate the interaction between chromium and nitrogen, we take the case of nitriding iron-chromium alloys with chromium mass fractions of 1%, 3% and 5%, nitrided at 520°C for 48 h (KN = 1). The parameter KN defined as the ratio P (NH3)P (H2)3/2 is called "nitriding potential" (NitrierKenzahl)

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