کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
830071 1470350 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Wear resistance enhancement of electroless nanocomposite coatings via incorporation of alumina nanoparticles prepared by milling
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Wear resistance enhancement of electroless nanocomposite coatings via incorporation of alumina nanoparticles prepared by milling
چکیده انگلیسی

Electroless Ni–P–Al2O3 nanocomposite coatings were deposited on steel surface from a plating solution with alumina (α-Al2O3) nano-particles prepared by mechanical milling in a high energy density ceramic stirred bead mill. The size and specific surface area of the nano-sized alumina particles were determined by acoustic particle sizer and nitrogen adsorption surface area analyzer. The phase structure, morphology and elemental composition of Ni–P–Al2O3 nano-composite coatings were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), respectively. Effect of the nanoparticle concentration in the plating bath on the micro-hardness, wear resistance and corrosion resistance of the as-deposited and the heat-treated coatings was investigated. The results show that the incorporation of alumina nanoparticles can enhance the micro-hardness and wear resistance of electroless Ni–P–Al2O3 nanocomposite coatings, but affect the corrosion resistance.

Figure optionsDownload as PowerPoint slideHighlights
► Al2O3 nanoparticles (13 nm) were prepared by milling in high-energy density stirred bead mill.
► We prepared Ni–P–Al2O3 nanocomposite coatings by electroless plating using the nanoparticles.
► Incorporation of the nanoparticles improved wear resistance of the electroless coating.
► The nanoparticles prepared by milling can be used for the coatings instead of those by chemical methods.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 47, May 2013, Pages 443–448
نویسندگان
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