MOSSBAUER STUDY OF IRON IN THE GRAIN BOUNDARY OF ALUMINIUM

Iron was diffused into aluminium along grain boundaries and studied by Mossbauer spectroscopy. The Mossbauer spectrum of the investigated sample contained one doublet with isomer shift δ=0.360/5/ mm s−1 /relative to α-iron/ and quadrupole splitting Δ=0.84/l/ mm s−1. These results suggest that the iron atoms in the grain boundaries of aluminium have environment very similar to that which is present in amorphous iron /III/ oxides.