Analytical Characterization of Nd2FeB sinteredmagnet14

Type : Article de conférence
Auteur(s) :  Mehenni Mohamed, Gedioura Bouzide, Lounis Azzeddine
Année :  2016
Domaine : Sciences des matériaux
Conférence: 7th African Conference on Non Destructive Testing ACNDT 2016 & the 5th International Conference on NDT and Materials Industry and Alloys (IC-WNDT-MI)
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF :  (.pdf)
Mots clés :  NdFeB Sintered magnets, NdFeB characterization, NAA.

Résumé : 

The remarkable properties (magnetism andcorrosion resistance)of the Nd-Fe-B sintered magnet areassociated with the presence of other metal elements thatNeodymium-Iron-Boron like Cu, Mn, Al, V, Ni and others. Withan aim of having information on the components in the Nd-Fe-Bmatrix and on the distribution of these elements, in this work, theNAA has highlighted the presence of several metallic elements.Using a mass ratio equal to an activity ratio we can calculate theproportions of detected Elements. The results are: iron with51.30%, neodymium with 25.41% and other elements like nickelwith 1.25%. The rest from the matrix, 22.04%, represents theproportions of B and the other elements traces. In this work weare interested in neutron activation analysis (NAA) in the onlyreason is to identify the metallic Elements in trace (ppm).