کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10629339 991060 2015 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of bulk nanocrystalline samarium hexaboride
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Synthesis of bulk nanocrystalline samarium hexaboride
چکیده انگلیسی
This study reports on the preparation and consolidation of nano-sized SmB6 powders via mechanochemical synthesis (MCS) performed at room-temperature using Sm2O3-B2O3-Mg powder blends followed by cold pressing/pressureless sintering. Milling duration was used as an MCS parameter to reveal the optimum production conditions of nanoscale SmB6 powders, which were subsequently subjected to HCl leaching to remove the intermediate products. Microstructural, physical and magnetic properties of the SmB6 powders were evaluated using X-ray diffractometer (XRD), differential scanning calorimeter (DSC), particle size analyzer (PSA), stereomicroscope (SM), scanning electron microscope (SEM), transmission electron microscope/energy dispersive spectrometer (TEM/EDS), atomic absorption spectrometer (AAS), surface area analyzer (SAA) and vibrating sample magnetometer (VSM). The bulk properties of the SmB6 sintered from nanocrystalline SmB6 powders with an average particle size of ∼80 nm and a minimum purity of 99.99% were described in terms of their microstructure, density, electrical resistivity, surface roughness, friction coefficient, hardness and wear rate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 35, Issue 15, December 2015, Pages 4121-4136
نویسندگان
, , , , ,