کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6344429 | 1620730 | 2016 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Observation of fine-ordered patterns on electrode surfaces subjected to extensive erosion in a spark discharge
ترجمه فارسی عنوان
نظارت بر الگوهای دقیق بر روی سطوح الکترود که در اثر فرسایش وسیع در یک تخلیه جرقه قرار دارند
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کلمات کلیدی
تخلیه جرقه ژنراتور نانوذرات، الگوی الکترود، نیکل،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علم هواشناسی
چکیده انگلیسی
This note describes the observation of pattern formation on the surface of metal electrodes used in a spark discharge. The spark discharge used in the experiments was a spark discharge generator (SDG) designed for the generation of nanoparticles. The generator was run in atmospheric pressure nitrogen flow, with the electrode gap adjusted to 3Â mm. The spark repetition rate was about 30Â Hz, at an average breakdown voltage of 6.6Â kV. It was observed, that after extended duration (several hours) of sparking, the front face of the cylindrical electrodes exhibited an erosion pattern, which had a characteristic appearance both in the macro and micro dimensions. Apart from the expected rounding-off of the circular edge of the electrodes, the erosion pattern most often found consisted of a closely packed ordered arrangement of protrusions on the surface. The ordered-protrusion pattern occurred predominantly on initially cathodic electrodes and was discernible on copper, gold, nickel, silver and copper-nickel alloy electrodes. The topology of the erosion pattern and its time evolution was studied in detail on nickel electrodes by using optical microscopy and confocal laser scanning microscopy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Aerosol Science - Volume 93, March 2016, Pages 16-20
Journal: Journal of Aerosol Science - Volume 93, March 2016, Pages 16-20
نویسندگان
Moritz Wagner, Attila Kohut, Zsolt Geretovszky, Martin Seipenbusch, Gábor Galbács,