کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7870870 | 1509190 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Carbon-coated cobalt nanoparticles
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Carbon-coated cobalt nanoparticles Carbon-coated cobalt nanoparticles](/preview/png/7870870.png)
چکیده انگلیسی
The nanocrystalline cobalt used in experiment was prepared by means of cobalt hydroxide precipitation, followed by calcination and reduction. A small amount of structural promoters (CaO and Al2O3) was added to stabilize the nanocrystalline cobalt structure at elevated temperatures. The fcc-Co and hcp-Co phases were determined in the prepared samples. The metal was carburised with methane in a temperature range 400-500 °C to obtain Co(C) nanocapsules. The carbon deposit was reduced with hydrogen flow in a temperature range 500-560 °C. Carburisation processes was investigated using thermogravimetric method. The samples after carburisation were investigated by means of XRD and HRTEM methods. Carbon-coated cobalt nanocapsules and carbon nanotubes were obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 27, Issues 5â8, September 2007, Pages 1273-1276
Journal: Materials Science and Engineering: C - Volume 27, Issues 5â8, September 2007, Pages 1273-1276
نویسندگان
Urszula Narkiewicz, Marcin PodsiadÅy, Walerian Arabczyk, MichaÅ J. Woźniak, Krzysztof J. KurzydÅowski,