کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1499889 993325 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure of fine-grained Nd–Fe–B sintered magnets with high coercivity
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Microstructure of fine-grained Nd–Fe–B sintered magnets with high coercivity
چکیده انگلیسی

The microstructure of high-coercivity Nd–Fe–B sintered magnets with a grain size of about 1 μm, which was processed by helium jet milling and the pressless sintering process, was studied by scanning electron microscopy, transmission electron microscopy and atom probe tomography. The high coercivity can be attributed to a similar microstructure that is five times smaller than that of conventional sintered magnets. Initial magnetization curves showed a two-step magnetization process, suggesting that the grain boundary phase causes a pinning force.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 65, Issue 5, September 2011, Pages 396–399
نویسندگان
, , , , ,