Removal of surface oxidation layer of permalloy 78 Using Na2SO4-electrolyzed oxidizing water

In this paper we discuss the removal of surface oxidation layer of permalloy 78 using Na2SO4 EO water (electrolyzed oxidizing water). First, we threw light on the etching efficiency of Na2SO4 EO water on the surface of Permalloy 78 by comparing it with the etching efficiency of soaking in H2SO4 solution and NaCl EO water. The comparative study showed that as for the etching efficiency on Permalloy 78, Na2SO4 EO water was superior to H2SO4 solution, while inferior to NaCl EO water. Next, we threw light on the influence on the surface micro shape of permalloy 78 by the SEM observations and AFM measurement. Lastly, by analyzing the surface, we made it clear that the performance of Na2S04 EO water on removal of surface oxidation layer of permalloy 78. The results showed that as for the removal speed of surface oxidation layer on permalloy 78, Na2SO4 EO water superior to H2SO4 solution. By this study, we got the suggestion that Na2SO4 EO water can be applied to the surface processing of Permaooly 78.