Actual Problems in Machine Building 2018 Vol. 5 No. 1-2

Актуальные проблемы в машиностроении. Том 5. № 1-2. 2018 Инновационные технологии в машиностроении ____________________________________________________________________ 41 POTENTIODYNAMIC RESEARCHES ELECTROCHEMICAL DISSOLUTION OF THE SOFT MAGNETIC NANOCRYSTALLINE ALLOY 5BDPR IN WATER SOLUTIONS OF SALTS SODIUM NITRITE AND SULFATE Gaar N. P., Ph.D. (Engineering), e-mail: gaar@corp.nstu.ru Rakhimyanov K. Kh., Ph.D. (Engineering), Associate Professor, e-mail: backtof79@mail.ru Ivanova M. V., Ph.D. student, e-mail: m.ivanova.2010@stud.nstu.ru Muratkoziev P. E., Graduate students, e-mail: kolinkertis@gmail.com Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk, 630073, Russian Federation Abstract Potentiodynamic researches of electrochemical dissolution was conducted of the soft magnetic nanocrystalline alloy 5BDSR in water solutions of neutral salts 10% NaNO 3 and Na 2 SO 4 in the range of potentials from 0 to 12 V . It was established that dissolution of the alloy happened at of potential 1,5 V and 2 V in water solutions of neutral salts sodium nitrite and sodium sulfate. Dissolution of area at of salts sodium nitrite and of sodium sulfate was happened in an active state at the range of potentials from above 1,5 to 4,5 V and 2 to 6,5 V. In both electrolytes of potentials the remained areas were belonging under of passive dissolution. Keywords electrochemical dissolution, polarization studies, soft magnetic nanocrystalline alloy, passivation, electrolytes