The Influence of Pr Concentration on the Magnetic Properties of Pr-Fe-Co-B-Nb HDDR Magnets

L. P. Barbosa; N.A. Ferreira; Hidetoshi Takiishi; R.N. Faria

doi:10.4028/www.scientific.net/MSF.498-499.125

Paper Titles

An Investigation on the Corrosion Behaviour of Nd-Fe-B Magnets in a Chloride Solution
p.98

Compressive Creep of Hot-Pressed Si₃N₄ Ceramics Using CRE₂O₃-Al₂O₃ or CRE₂O₃-AlN Additive Mixtures
p.104

Microstructure and Magnetic Properties of Fe-6.5wt%Si Alloy Obtained by Spray Forming Process
p.111

Effect of Calcination Conditions on the Magnetic Properties of MnZn Ferrites Powders Produced by Co Precipitation
p.119

The Influence of Pr Concentration on the Magnetic Properties of Pr-Fe-Co-B-Nb HDDR Magnets
p.125

Determination of Intrinsic Magnetic Parameters of SmCo₅ Phase in Sintered Samples
p.129

Determination of the Constants of Magnetocrystalline Anisotropy in Sintered Magnets with Uniaxial Texture
p.134

Effect Ni Addition of the Cu-Al Powder by Mechanical Alloying
p.141

Preparation of Nb-40Ti Powders by High-Energy Milling
p.146

HomeMaterials Science ForumMaterials Science Forum Vols. 498-499The Influence of Pr Concentration on the Magnetic...

The Influence of Pr Concentration on the Magnetic Properties of Pr-Fe-Co-B-Nb HDDR Magnets

Abstract:

Permanent magnets were produced from annealed alloys using the hydrogenation, disproportionation, desorption and recombination (HDDR) process. The influence of Pr concentration on the magnetic properties of these magnets was studied. Under the present processing conditions Pr has a significant influence on the magnetic behaviour of these magnetic materials. Microstructural examinations revealed that free iron was completed eliminated from all studied alloys with annealing and the grain size changed somewhat with praseodymium content. It has also been shown that to obtain bonded magnets with optimum magnetic properties the praseodymium content in these alloys should be around 13.5 at%.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 498-499)

Pages:

125-128

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.498-499.125

Citation:

Cite this paper

Online since:

November 2005

Authors:

L. P. Barbosa, N.A. Ferreira, Hidetoshi Takiishi, R.N. Faria

Keywords:

Hydrides, Magnetic Material, Magnetic Property, Pr-Based Alloys

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] W. Pan, L. Y. Cui, P. Wang, S. X. Zhou, in: Fourteenth International Workshop on Rare-Earth Magnets and Their Applications, Sao Paulo, 1996, p.467.

Google Scholar

[2] Y. B. Kim, W. Y. Jeung, J. Appl. Phys., 83 (1) (1998) 6405.

Google Scholar

[3] R.N. Faria, A.J. Williams, I.R. Harris, J. Alloys and Comp. 287 (1999) L10-L12.

Google Scholar

[4] R.N. Faria, A.J. Williams, I.R. Harris, J. Magn. Magn. Mater 202 (1999) 349.

Google Scholar

[5] R.N. Faria, D.N. Brown, I.R. Harris, J. Alloys and Comp. 296 (2000) 219.

Google Scholar

[6] R.N. Faria, B. E. Davies, D.N. Brown, I.R. Harris, J. Alloys and Comp. 296 (2000) 223.

Google Scholar

[7] N. Cannesan, D.N. Brown, A. J. Williams, I.R. Harris, J. Magn. Magn. Mater 233 (2001) 209.

Google Scholar

[8] R.N. Faria,H. Takiishi, A. R. M. Castro, L. F. C. P. Lima, I. Costa, J. Magn. Magn. Mater 246 (2002) 351.

Google Scholar

[9] N. Cannesan, J. M. LeBreton, A. J. Williams, I.R. Harris, J. Magn. Magn. Mater 242-245 (2002) 1372.

Google Scholar

[10] L. P. Barbosa, H. Takiishi and R. N. Faria, J. Magn. Magn. Mater (2003) In press.

Google Scholar