Digitale Medien
s.l. ; Stafa-Zurich, Switzerland
Materials science forum
Vol. 539-543 (Mar. 2007), p. 3303-3308
ISSN:
1662-9752
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
A new kind of nanocomposite rare-earth magnets of Nd2Fe14B/ α-Fe were prepared bymelt-spinning method. Effects of alloying element and processing parameter on the microstructureand magnetic properties of nanocomposite materials have been investigated. Zr is effective toenhance coercivity of alloys because of a refinement of grains, so that in alloy of Zr content with1.0 at% (Zr1.0) has the smallest grain size of 17 nm and therefore causes the highest intrinsiccoercivity . Addition of Zr can also enhance the ability of amorphous-forming. The combination ofadding of Zr and using a smaller diameter of the nozzle in the melt-spinning method is effective forthe forming of amorphous structure.According to the MFM study, the length of the magnetic contrast in the alloy is much largerthan the mean grain size. The large length corresponds to that of interaction domains(ID), which isrelated to the exchange coupling effect
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.3303.pdf
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