کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10625540 989626 2014 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of composition and milling medium on mechanosynthesis of chlorapatite-alumina composite nanopowders
ترجمه فارسی عنوان
اثر ترکیب و فرزکاری بر روی مکانیسنتز نانوپودر کامپوزیت کلرپاتیت-آلومینای
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
The effects of alumina content and milling medium on the formation of chlorapatite-based composite nanopowders were studied. The powder mixtures with various compositions were activated in a high-energy planetary ball mill for 5 h using two distinct milling media. The first medium (M1) was composed of sealed tempered chrome steel vial and un-fused alumina balls. The second medium (M2) consisted of sealed tempered chrome steel vial and balls. In the presence of different amounts of γ-Al2O3, no mechanochemical reaction occurred in M1 medium. In contrast, in the second medium (M2), chlorapatite−alumina composite nanopowders were obtained after 5 h of milling in the presence of 4 and 7 wt% alumina. In the presence of 4 wt% alumina, crystallite size and lattice strain of the product were about 30±2 nm and 0.62±0.031%, respectively. With increasing the alumina content to 7 wt%, the lattice strain declined to 0.57±0.029%, while the crystalline size increased to around 32±2 nm. From the electron microscopic images, the synthesized composite nanopowder had a cluster-like structure with an average particle size of about 97 nm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 40, Issue 8, Part A, September 2014, Pages 12265-12272
نویسندگان
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