کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1627770 1516458 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Corrosion studies on highly textured Nd–Fe–B sintered magnets
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Corrosion studies on highly textured Nd–Fe–B sintered magnets
چکیده انگلیسی

The anisotropic corrosion behaviour of highly textured sintered Nd–Fe–B magnets in weakly acidic solutions has been evaluated by investigations of magnet surfaces, which are parallel or perpendicular to the crystallographic c-axis of the aligned ferromagnetic grains. The total corrosion process progresses more pronouncedly at the perpendicular magnets surfaces (the pole faces). Under free corrosion and anodic polarization conditions the parallel magnet surfaces exhibit a stronger active dissolution tendency due to an enhanced reactivity of grain surfaces parallel to the {1 0 0} planes of the Nd2Fe14B crystals. Single misoriented grains dissolve preferentially at both magnet sides. Under cathodic conditions, the hydrogenation process progresses more rapidly at the perpendicular sides, suggesting a local preferential penetration of atomic hydrogen into the material.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 415, Issues 1–2, 18 May 2006, Pages 111–120
نویسندگان
, , , , , , ,