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Iranian Journal of Materials Science and Engineering، جلد ۲۲، شماره ۳، صفحات ۹-۲۵
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Effect of Current Type and Particle Size on Wear and Corrosion Behaviour of Electroplated Ni-B4C Composite Coatings
چکیده انگلیسی مقاله Ni-B4C nanocomposite coatings were deposited onto a pure Cu substrate using electroplating. Different types of current, including direct current (DC), pulse reverse current (PRC), and unipolar pulse current (PC), were applied using various concentrations of micron and nano size particles in the electroplating bath. Microstructure, hardness, and wear and corrosion behavior of the coatings were investigated. Microstructural evaluations were performed using scanning electron microscopy (SEM) and field emission scanning electron microscopy (FESEM). Microhardness, pin-on-disk sliding wear, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) tests were conducted on the coatings. Electrodeposition using PRC resulted in a more uniform distribution of co-deposited B4C microparticles and nanoparticles within the coatings. Nanocomposite coatings reinforced with B4C nanoparticles were obtained using PRC with a bath concentration of 8 g/l, exhibited higher hardness and improved wear properties compared to composite coatings containing B4C micron-sized particles. Moreover, using PRC resulted in higher hardness values and improved wear and corrosion resistance compared to PC and DC.
کلیدواژه‌های انگلیسی مقاله electroplating,Ni-B4C,unipolar pulse current,pulse reverse current
نویسندگان مقاله | Seyed Ehsan Khadempir
Department of Materials Science and Engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz


| Behnam Lotfi
Department of Materials Science and Engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz, 6135473337, Iran


| Zohreh Sadeghian
Department of Materials Science and Engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz
نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-5466-1&slc_lang=en&sid=1
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده گروه سرامیک
نوع مقاله منتشر شده Research Paper
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