Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/xmlui/handle/10054/9187
Title: Spark plasma sintered Sm(2)Co(17)-FeCo nanocomposite permanent magnets synthesized by high energy ball milling
Authors: SREENIVASULU, G
GOPALAN, R
CHANDRASEKARAN, V
MARKANDEYULU, G
SURESH, KG
MURTY, BS
Keywords: Curie-Temperature
Microstructure
Fe
Cu
Substitution
Enhancement
Coercivity
Compaction
Powders
Nb
Issue Date: 2008
Publisher: IOP PUBLISHING LTD
Citation: NANOTECHNOLOGY, 19(33), -
Abstract: Nanocomposite Sm(2)Co(17)-5 wt% FeCo magnets were synthesized by high energy ball milling followed by consolidation into bulk shape by the spark plasma sintering technique. The evolution of magnetic properties was systematically investigated in milled powders as well as in spark plasma sintered samples. A high energy product of 10.2 MGOe and the other magnetic properties of M(s) = 107 emu g(-1), M(r) = 59 emu g(-1), M(r)/M(s) = 0.55 and H(c) = 6.4 kOe were achieved in a 5 h milled and spark plasma sintered Sm(2)Co(17)-5 wt% FeCo nanocomposite magnet. The spark plasma sintering was carried out at 700 degrees C for 5 min with a pressure of 70 MPa. The nanocomposite showed a higher Curie temperature of 955 degrees C for the Sm(2)Co(17) phase in comparison to its bulk Curie temperature for the Sm(2)Co(17) phase (920 degrees C). This higher Curie temperature can improve the performance of the magnet at higher temperatures.
URI: http://dx.doi.org/10.1088/0957-4484/19/33/335701
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9187
http://hdl.handle.net/10054/9187
ISSN: 0957-4484
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