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Effect of magnetic field on the corrosion of iron and St20 steel as studied by positron annihilation
Author(s) -
Pietrzak Ryszard,
Szatanik Roman
Publication year - 2010
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200945124
Subject(s) - positron , annihilation , positron annihilation , corrosion , magnetic field , materials science , spectral line , metallurgy , atomic physics , nuclear physics , physics , electron , quantum mechanics , astronomy
Lifetime spectra of positron annihilation in iron and St20 steel corroded in the water solution of HCl and in vapour above its surface have been investigated with emphasis on the effect of corrosion time and environment (solution or vapour) as well as of the presence and orientation of the magnetic field on the measured positron annihilation parameters. All the registered positron lifetime spectra consist of two components. For corroded samples the intensities of the two components as well as the corresponding values of the mean positron lifetime, differ from those for uncorroded material. The corrosion‐induced changes in the positron annihilation parameters depend on the corrosion environment (solution or vapour) and on the presence and direction of external magnetic field.