کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
673597 1459512 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermo-chemical characterization of a Al nanoparticle and NiO nanowire composite modified by Cu powder
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Thermo-chemical characterization of a Al nanoparticle and NiO nanowire composite modified by Cu powder
چکیده انگلیسی


• First study on the copper modified powder-type Al nanoparticle and NiO nanowire composites.
• Experimental findings were unique in identifying the AlNi formation and comparing with the Al/CuO thermite.
• Potential applications in material joining and bonding.

Thermo-chemical properties of the Al nanoparticle and NiO nanowire composites modified by the micro-sized copper additive were investigated experimentally. Their onset temperatures of ignition and energy release data per mass were characterized using differential thermal analysis measurements. These microstructures and chemical compositions of reaction products were analyzed using scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction. The fuel-rich Al/NiO/Cu composites produced two types of metallic spheres. Copper spheres were formed from melting and solidification of the copper additive, while AlNi composite spheres were identified by the energy dispersive X-ray spectroscopy and X-ray diffraction analyses. It was found that the amount of the copper additive did not significantly influence the onset temperature of thermite peaks, but caused a dramatic change in energy release. The aforementioned ignition and energetic properties were compared with these from the Al nanoparticle and CuO nanowire composites.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 572, 20 November 2013, Pages 51–58
نویسندگان
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