Details

Autor(en) / Beteiligte

• Rada, M.
• Lyubina, J.
• Gebert, A.
• Gutfleisch, O.
• Schultz, L.

Titel

Corrosion behavior of Nd–Fe–B/α–Fe nanocomposite magnets

Ist Teil von

• Journal of magnetism and magnetic materials, 2005-04, Vol.290, p.1251-1254

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2005

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• For the fundamental evaluation of corrosion properties of nanocrystalline Nd–Fe–B-based magnets, different phase mixtures with compositions varying from single phase Nd 2Fe 14B to Nd 2Fe 14B+10 wt% Fe, Nd 2Fe 14B+25 wt% Fe and Nd 2Fe 14B+35 wt% Fe were prepared via intensive ball milling and subsequent hot-pressing. Before and after corrosion measurements, the samples were investigated by means of high-resolution scanning electron microscopy. Potentiodynamic polarisation measurements were performed in 0.5 M phthalate buffer ( pH = 5 ). With increasing α–Fe fraction, a decrease of the corrosion rate is observed as well as improved passivation.