Title of article
Post-sintering heat treatment effect on the coercivity of sintered (Nd,Dy)15(Fe,Co,Mo,Al)77B8 permanent magnets
Author/Authors
A.A. Lukin، نويسنده , , S Szymura، نويسنده , , A.A Zhuravlyev، نويسنده , , S.M Margaryan، نويسنده , , H Bala، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2000
Pages
5
From page
74
To page
78
Abstract
The effect of heat treatment on the intrinsic coercivity, iHc and microstructure were investigated for sintered (Nd,Dy)15(Fe,Co,Mo,Al)77 B8 permanent magnet. The microstructure has been investigated by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), X-ray spectroscopy and Mössbauer spectroscopy. The observed behaviour of iHc may be caused by a superposition of the following effects: (i) the distribution of the nonmagnetic phases and the ratio of the amount of hard magnetic Nd2Fe14B-phase to the amount of the residual phases; (ii) homogeneous distribution of elements in the main phases; (iii) removing the stresses in the phases; and (iv) diffusion of Al, Mo and Co into the hard magnetic Nd2Fe14B-phases.
Keywords
Intrinsic coercivity , Scanning electron microscopy , Energy dispersive X-ray analysis , M?ssbauer spectroscopy
Journal title
Materials Chemistry and Physics
Serial Year
2000
Journal title
Materials Chemistry and Physics
Record number
1060297
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