ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Sintered magnets have been produced with powder obtained using the hydrogenation,disproportionation, desorption and recombination process (HDDR). The new processing procedurefor the production of the sintered magnets has been adopted in an attempt to reduce the millingtime. Commercial cast ingot alloys based on the compositions Pr14Fe75.9Co4B6Nb0.1 andPr20.5FebalB5Cu2.0 have been employed in this investigation. The HDDR powder was used toproduce sintered magnets using a mixture of these alloys, in very distinct proportions. Only a smallamount (20 wt. %) of the copper-containing alloy has been added as a sintering aid. Standardhydrogen decrepitation (HD) magnets have also been included in this work for a comparison. Theeffect of a reduced milling time on the magnetic properties of the HDDR sintered magnets has beeninvestigated. Sintering temperature and time of were kept constant for all magnets (1050ºC for 60minutes). The microstructures of the permanent magnets have been investigated by scanningelectron microscopy and energy dispersive X-ray analysis
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.591-593.885.pdf
Permalink
