INFLUENCE OF PASSIVATION PROCESS ON THE CORROSION-RESISTANCE OF AMORPHOUS TAPES

The influence of surface modification of amorphous tapes made of iron based alloys using electrochemical passivation, on their corrosion res istance has been investigated, Passivation has been carried out basing on the potentiodynamic method of anodic polarization in selected test ing environment - 5M solution of H2SO4. The corrosion tests of passiva ted and unpassivated tape surfaces have been realized in 0,1 M NaCl so lution. The potential of polarized specimens has been changed with rat e 1 mV/s, and polarization has been carried out in potentials range of - 0,700 V to +0,600 V. The modification of tapes surfaces used for ir on based alloys affect possitivly on their corrosion resistance compar ying to unpassivated state.