مشخصات پژوهش

عنوان	Electrochemical Behavior of Pure Copper in Phosphate Buffer Solutions: A Comparison Between Micro- and Nano-Grained Copper
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	electrochemical behavior, Mott-Schottky, nano-grain, nanomaterials, pure copper, TEM
چکیده	In this work, electrochemical behavior of annealed (micro-) and nano-grained pure copper (fabricated by accumulative roll bonding process) in phosphate buffer solutions of various pH values ranging from 10.69 to 12.59 has been studied. Before any electrochemical measurements, evaluation of microstructure was obtained by optical microscope and transmission electron microscopy. To investigate the electrochemical behavior of the samples, the potentiodynamic polarization, Mott-Schottky analysis, and electrochemical impedance spectroscopy (EIS) were carried out. Potentiodynamic polarization plots and EIS measurements revealed that as a result of grain refinement, the passive behavior of the nano-grained sample was improved compared to that of annealed pure copper. Also, Mott-Schottky analysis indicated that the passive films behaved as p-type semiconductors and grain refinement did not change the semiconductor type of passive films.
پژوهشگران	امید ایمان طلب (نفر اول)، آرش فتاح الحسینی (نفر دوم)، محسن کشاورز خوراسگانی (نفر سوم)، یوسف مظاهری رودبالی (نفر چهارم)