'THE ROLE OF MODIFYING ELEMENTS ON THE BEHAVIOR OF INDIUM ACTIVATED,ALUMINUM/ZINC ALLOY SACRIFICIAL ANODES;PART 2,PHYSICAL METALLURGY EVALUATION OF TESTED SAMPLES.

摘要

'Following short-term and long term electrochemical evaluations of twenty-three cast alloys varied around the baseline alloy composition of 3.5 weight percent(w/o)zinc,1200 parts per million by weight(ppmw)silicon and 150 ppmw indium,scanning electron microscopic evaluations were made including elemental evaluations of interesting features.The presence,location and electrochemical behavior of Fe/Si rod impurities within the bulk alloy was documented.Some surface segregation of excessive element additions appearing to have resulted in passivation was also documented.