The effect of silicon on the electronic structure and corrosion - Electrochemical behavior of boron-containing X20H20 steels

The effect of silicon (0.06 to 4.89%) on the electron density distribution around 57 Fe nuclei in quenched boron-containing X20H20 steels is studied with the use of gamma-resonance spectroscopy. Computer treatment of the spectra provided the estimates of the isomeric (chemical) shifts delta (mm/s) and half-widths Gamma (mm/s) of the singlet and doublet spectral lines, as well as the area parts S (%) of each constituent in the summary spectrum and the quadrupole electric splitting Deltaeq (mm/s) of the doublet. On the basis of these estimates, both new and earlier obtained experimental data on the peculiarities of the corrosion-electrochemical behavior of silicon-containing austenitic stainless steels are discussed.