Improvement of size and magnetic properties of [Nd.sub.9.5][Fe.sub.72.5][Ti.sub.3][B.sub.15] bulk magnets by Zr or Nb substitution for Ti

Authors :: Chang, H.W.
Cheng, Y.T.
Chang, C.W.
Hsieh, C.C.
Guo, Z.H.
Chang, W.C.
Sun, A.C.
Source :: Journal of Applied Physics. April 1, 2009, Vol. 105 Issue 7, 07A742-1-07A742-3
Publication Year :: 2009
Abstract: Magnetic properties and microstructure of directly quenched [Nd.sub.9.5][Fe.sub.72.5][Ti.sub.3-x][M.sub.x][B.sub.15] (M=Nb and Zr) bulk magnets in rod form with a diameter of 0.9 mm are analyzed. Proper Nb or Zr substitution for Ti has modified phase constitution and has refined the grain size effectively and their high permanent magnetic property has occurred from the existence of a large volume fraction of 2:14:1 phase, finer grain size and the existence of grain boundary phase.

Subjects :: Niobium -- Magnetic properties
Titanium -- Magnetic properties
Zirconium -- Magnetic properties
Grain boundaries -- Analysis
Iron alloys -- Magnetic properties
Iron alloys -- Structure
Neodymium -- Magnetic properties
Physics

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