14 مهر 1403

ملیحه عمرانی

مرتبه علمی: استادیار
نشانی: پژوهشکده خلیج فارس - گروه زیست فناوری
تحصیلات: دکترای تخصصی / مهندسی هسته ای
تلفن: 077
دانشکده: پژوهشکده خلیج فارس

مشخصات پژوهش

عنوان Enhanced electrical conductivity of two layers AlN–TiN coating on SS316L as bipolar plate using plasma focus device
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
Bipolar plate AlNeTiN coating Plasma focus Electrical conductivity SS316L
مجله INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
شناسه DOI https://doi.org/10.1016/j.ijhydene.2016.01.081
پژوهشگران ملیحه عمرانی (نفر اول) ، مرتضی حبیبی (نفر دوم) ، محمد سعید مطیع بیرجندی (نفر سوم)

چکیده

Two layers of AlNeTiN coating were deposited onto SS316L as PEM bipolar plate using plasma focus device for 5, 10 and 20 shots number. The XRD patterns of all coated samples reveal formation of TiN, Ti2N and AlTi3N crystallite phases on the surface. Using the Scherrer formula the crystallite size of the coating layer is estimated about 20e40 nm. Thickness of the two layers coating obtained from cross sectional SEM of the samples is in the range of 5e15 mm. Through the potentiostatic test considerable decrease of the current density of the 20 shots coated samples is achieved. The ICR of the samples reduced as follows: 20 shots < 10 shots < 5 shots < bare sample which confirms that the electrical conductivity of the bipolar plate is increased due to the formation of AlN and TiN coating. SEM morphology of all samples before and after potentiostatic tests shows that the coated samples are exposed to less corrosion compare with the bare sample. These results are in good agreement with electrochemical tests and the 20 shots sample has the lowest corrosion.