کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1624228 1516416 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improvement of magnetic properties and corrosion resistance of NdFeB magnets by intergranular addition of MgO
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Improvement of magnetic properties and corrosion resistance of NdFeB magnets by intergranular addition of MgO
چکیده انگلیسی

In this work we have studied the effects of MgO addition on magnetic properties and corrosion resistance of NdFeB magnets. We have found that remanence and density of the magnet can be increased by intergranular addition of MgO. For Nd15Dy1.2FebalAl0.8B6 magnets with 0.1–0.3 wt.% MgO addition, corrosion potential of magnets is more positive, and polarization current density under the same applied potential in the anodic branch of the polarization curve is lowered compared with magnet without additives. This indicates that intergranular addition of MgO can improve the corrosion resistance of magnets. Furthermore, oxidation test also indicates the magnets with MgO addition are more resistant to humid environment. Enhance of corrosion resistance of magnets is believed to be due to the formation of a Nd–O–Fe–Mg intergranular phase.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 461, Issues 1–2, 11 August 2008, Pages 351–354
نویسندگان
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