کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7923329 | 1511817 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improved mechanical and corrosion properties of nickel composite coatings by incorporation of layered silicates
ترجمه فارسی عنوان
خصوصیات مکانیکی و خوردگی پوشش های کامپوزیت نیکل با ترکیب سیلیکات های لایه ای بهبود یافته است
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کلمات کلیدی
مواد کامپوزیتی، خوردگی، تکنیک های الکتروشیمیایی، نانو انداختن،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
Layered silicates as exfoliated montmorillonite are incorporated into nickel films by electrodeposition, enhancing both corrosion resistance and hardness. Films were deposited onto stainless steel from a plating solution adjusted to pH 9 containing nickel sulfate, sodium citrate, and various concentrations of exfoliated montmorillonite. The presence of the incorporated layered silicate was confirmed by scanning electron microscopy and energy-dispersive X-ray spectroscopy. The composite films were also compact and smooth like the pure nickel films deposited under the same conditions as shown by scanning electron microscopy. X-ray diffraction results showed that incorporation of layered silicates into the film do not affect the nickel crystalline fcc structure. The nanocomposite films exhibited improved stability and adhesion. Pure nickel films cracked and peeled from the substrate when immersed in 3.5% NaCl solution within 5 days, while the nanocomposite films remained attached even after 25 days. The corrosion resistance of the nickel nanocomposites was also improved compared to nickel films. Nickel-layered silicate composites showed a 25% increase in Young's modulus and a 20% increase in hardness over pure nickel films.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 145, Issues 1â2, 15 May 2014, Pages 44-50
Journal: Materials Chemistry and Physics - Volume 145, Issues 1â2, 15 May 2014, Pages 44-50
نویسندگان
J. Tientong, Y.H. Ahmad, M. Nar, N. D'Souza, A.M.A. Mohamed, T.D. Golden,