On a Correlation between the Electronic Structure and Passivability of Fe
Cr Alloys
O. V. Kasparova*, Yu. V. Baldokhin**, and A. S. Solomatin**
* State Scientific Center of the Russian Federation “Karpov Institute of Physical Chemistry”,
ul. Vorontsovo Pole 10, Moscow, 103064 Russia
** Semenov Institute of Chemical Physics, Russian Academy of Sciences,
ul. Kosygina 4, Moscow, 117977 Russia
Received April 23, 2004
Abstract—The chromium (5.8 to 30.7 wt. %) effect on the superfine magnetic structure and surrounding electrons of the 57Fe nuclei in quenched and annealed Fe–Cr alloys is studied with the use of nuclear 
-resonant (Mössbauer) spectroscopy. The following parameters of the Mössbauer spectra are calculated by using PC with a Normos software: the effective magnetic intensity Hef (in kOe), the isomeric (chemical) shift 
(in mm/s), the quadrupole electric splitting 
eq (in mm/s), and the area fraction S (%) of the superfine-structure subspectrum. Significant changes in the superfine magnetic structure and the electron surrounding of the 57Fe nuclei are revealed as functions of the chromium content in the alloys. The conclusion on a correlation between the electronic structure of the alloys and their passivability is drawn.
-resonant (Mössbauer) spectroscopy. The following parameters of the Mössbauer spectra are calculated by using PC with a Normos software: the effective magnetic intensity Hef (in kOe), the isomeric (chemical) shift (in mm/s), the quadrupole electric splitting eq (in mm/s), and the area fraction S (%) of the superfine-structure subspectrum. Significant changes in the superfine magnetic structure and the electron surrounding of the 57Fe nuclei are revealed as functions of the chromium content in the alloys. The conclusion on a correlation between the electronic structure of the alloys and their passivability is drawn.