Mossbauer studies of electrodeposited and ion beam mixed alloy coatings

CEMS, XMS, XRD and electron microprobe analysis were applied to study electrodeposited and ion beam mixed Fe-Cr-Ni as well as electrodeposited and ball-milled Sn-Cr alloys. In Fe-Cr-Ni alloys with composition 40% Cr and 20-30% Ni a metastable ferromagnetic phase has been found beside a metastable paramagnetic and an equilibrium phase in all deposits. The relative occurrence of the ferromagnetic phase exhibits an increase in the plating temperature range: 30-40degreesC. With plating temperature an increase of the short-range order in the ferromagnetic phase was observed. The highenergy heavy ion irradiation of Fe-Ni-Cr multilayer produces ferromagnetic and paramagnetic metastable phases. The electrodeposition of Sn-Cr alloys results in metastable Sn-Cr phases. In the case of ball-milling preparation the equilibrium Sn3Cr2 phase (delta = 2.3 mm/s, Delta = 1.2 mm/s) appears in Sn-Cr alloys. The quantity of the Sn3Cr2 phase increases with the milling time.