Control of iron nitride formation by a high magnetic field

摘要

The influence of high magnetic field on nitriding behavior was investigated in a mixture of NH_3 and H_2. It was found that high magnetic field could shift the equilibrium of nitriding reaction; this proved that the critical nitrogen potential to form γ'-Fe_4N and ε-Fe_3N phase was evidently enhanced compared with conventional nitriding. This research provides a new approach for a selective nitriding process.