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Projects / Programmes source: ARIS

Improved permanent magnetic materials via interstitial gas modification.

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Research activity

Code Science Field Subfield
2.04.02  Engineering sciences and technologies  Materials science and technology  Metallic materials 

Code Science Field
P200  Natural sciences and mathematics  Electromagnetism, optics, acoustics 
P260  Natural sciences and mathematics  Condensed matter: electronic structure, electrical, magnetic and optical properties, supraconductors, magnetic resonance, relaxation, spectroscopy 
Keywords
permanent magnets, metallic magnets, intermetallic alloys, coercivity, rare-earth, mechanicall alloying
Evaluation (rules)
source: COBISS
Evaluation of bibliographic research performance indicators according to ARIS methodology
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Researchers (2)
no. Code Name and surname Research area Role Period No. of publications
1.  18594  PhD Paul John Mc Guiness  Materials science and technology  Head  2000 - 2001  338 
2.  06425  Anton Porenta  Chemical engineering  Researcher  1999 - 2001  10 
Organisations (1)
no. Code Research organisation City Registration number No. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  90,753 
Abstract
The proposed project will attempt to develop rare earth-transition metal magnets, based on Nd2Fe14B and Sm2Fe17N3 with enhanced properties by means of novel processing routes. It is planned to look at a new HDDR process where the desorbtion recombination stages are effectively separated by causing the recombination to take place in a hydrogen atmosphere. This will enable greater microstructural control and should lead to better material properties. In addition, a completely new process whereby hydrogen is replaced by nitrogen will be studied. Replacement of the hydrogen by nitrogen will lead to a safer, potentially more controllable process with the prospect of excellent magnetic properties. Mechanical alloying/milling will be used in combination with various gaseous atmospheres to look into the possibility of developing intermediate phases leading to Nd2Fe14B and Sm2Fe17N3–d based materials with high coercivities.
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