Abstract
The influence of imperfect and annealed structure on the phase composition of α-iron after nitrogen implantation is studied. The surface phase composition of α-iron specimens is investigated by the glancing angle X-ray diffraction and Conversion Electron Mossbauer Spectroscopy (CEMS). The nitrogen depth profile is obtained by Rutherford backscattering spectroscopy. The high density of surface defects induced by grinding and polishing facilitates the formation of a predominantly paramagnetic e-Fe 2 N phase during and after nitrogen implantation. The structure of the annealed surface does not trap such a high content of implanted nitrogen atoms and the ferromagnetic Fe-N phases with lower nitrogen concentrations are detected as dominant in the surface layers. Similar results are obtained for the mechanically treated surface after electrochemical etching that removes partly the defect structure.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
