INFLUENCE OF NI AS MINORITY ALLOYING ELEMENT ON THE CORROSION BEHAVIOR OF AMORPHOUS AL-CU-MG ALLOYS IN CHLORIDE SOLUTION

The influence of nickel as minority alloying element on the corrosion behavior amorphous alloys (Al74Cu16Mg10)99Ni, (Al74Cu16Mg10)98Ni2 and (Al74Cu16Mg10)97Ni3 was investigated. were obtained ribbons by Chill Block Melt Spinning (CBMS). structure proven X-ray diffraction (XRD) transmission electron microscopy (TEM). rate calculated gravimetric using continuous immersion tests for 360 hours in 3.5% NaCl solution at a temperature 25oC. lowest found alloy containing 3 at. % Ni. chemical composition accumulated products studied XRD.The local resistance (Al74Cu16Mg10)100-хNiх x = 0, 1, 2, 3% investigated electrochemically 25°C. Pitting potential (Epitt) repassivation (Erp) determined. It that most resistant to pitting alloy, which showed noblest (Epitt -0.332 V) (Erp -0.530 V).All test results nickel-containing compared base Al74Cu16Mg10 alloy.