کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5458918 1516175 2017 44 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and properties of micro-arc oxidation self-lubricating composite coatings containing paraffin
ترجمه فارسی عنوان
آماده سازی و خواص پوشش های کامپوزیت روغنی میکروکوکسی اکسیداسیون حاوی پارافین
کلمات کلیدی
آلیاژ آلومینیوم 2024، اکسیداسیون میکرو قوس، کاتد پالس عرض، پوشش های کامپوزیت روغنی اکسیداسیون میکرو قوس، استحکام کشش، مقاومت در برابر سایش،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
Micro-arc oxidation coatings were prepared on 2024 aluminium alloy using a pulsed bipolar power supply at different cathode pulse-widths. The MAO ceramic coatings contained many crater-like micro-pores and a small number of micro-cracks. After the MAO coatings were formed, the coated samples were immersed in molten paraffin. These micro-pores and micro-cracks on the surface of MAO ceramic coatings were filled with molten paraffin to prepare micro-arc oxidation self-lubricating composite coatings containing paraffin. The microstructure and properties of the MAO coatings and the wear resistance of micro-arc oxidation self-lubricating composite coatings were analysed by SEM, laser confocal microscope, XRD, a Vickers hardness tester, scratch test and ball-on-disc abrasive tests. The results revealed that the wear rates of the MAO coatings decreased significantly with increased cathode pulse-width. The friction coefficient of MAO self-lubricating composite coatings increased with the increase in cathode pulse-width. The wear rates of MAO self-lubricating composite coatings first decreased and then increased with increased cathode pulse-width. Compared to the MAO coatings, the micro-arc oxidation self-lubricating composite coatings exhibited a lower friction coefficient and lower wear rates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 719, 30 September 2017, Pages 1-14
نویسندگان
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